AKTIN Notfalldokumentation
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AKTIN Notfalldokumentation - Local Development build (v1.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

Resource Profile: AKTIN_PR_vitalsigns_blutdruck - Detailed Descriptions

Active as of 2025-06-12

Definitions for the aktin-pr-vitalsigns-blutdruck resource profile.

Guidance on how to interpret the contents of this table can be foundhere

0. Observation
Definition

Datenelemente des Blutdrucks


Measurements and simple assertions made about a patient, device or other subject.

ShortMeasurements and simple assertions
Comments

Profil ist Übersicht über AKTIN-spezifische Gegebenheiten


Used for simple observations such as device measurements, laboratory atomic results, vital signs, height, weight, smoking status, comments, etc. Other resources are used to provide context for observations such as laboratory reports, etc.

Control0..*
Is Modifierfalse
Summaryfalse
Alternate NamesVital Signs, Measurement, Results, Tests
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present (value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty())
obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present (dataAbsentReason.empty() or value.empty())
vs-de-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present ((component.empty() and hasMember.empty()) implies (dataAbsentReason.exists() or value.exists()))
dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present (dataAbsentReason.empty() or value.empty())
obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present (value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty())
2. Observation.implicitRules
Definition

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

ShortA set of rules under which this content was created
Comments

Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. Observation.modifierExtension
Definition

May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

ShortExtensions that cannot be ignored
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summaryfalse
Requirements

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on Observation.modifierExtension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 6. Observation.status
    Definition

    The status of the result value.

    ShortUntersuchungsstatusregistered | preliminary | final | amended +
    Comments

    WICHTIGER Hinweis für Implementierer:

    • Alle server-seitigen Implementierungen MÜSSEN in der Lage sein, die systemintern möglichen Statuswerte korrekt in FHIR abzubilden, mindestens jedoch final.
    • Alle client-seitigen Implementierungen MÜSSEN in der Lage sein, sämtliche Status-Codes zu interpretieren und dem Anwender in angemessener Form darstellen zu können, beispielsweise durch Ausblenden/Durchstreichen von Ressourcen mit dem status entered-in-error und Ausgrauen von Ressourcen, die einen Plan- oder Entwurfs-Status haben.

    This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

    Control1..1
    BindingThe codes SHALL be taken from ObservationStatushttp://hl7.org/fhir/ValueSet/observation-status|4.0.1
    (required to http://hl7.org/fhir/ValueSet/observation-status|4.0.1)

    Codes providing the status of an observation.

    Typecode
    Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supporttrue
    Summarytrue
    Requirements

    Need to track the status of individual results. Some results are finalized before the whole report is finalized.

    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    8. Observation.category
    Definition

    A code that classifies the general type of observation being made.

    ShortUntersuchungskategorieClassification of type of observation
    Comments

    Motivation MS: Dieses Feld erlaubt die Sortierung und Abfrage anhand der Kategorie der Untersuchung


    In addition to the required category valueset, this element allows various categorization schemes based on the owner’s definition of the category and effectively multiple categories can be used at once. The level of granularity is defined by the category concepts in the value set.

    Control10..*
    This element is affected by the following invariants: ele-1
    BindingThe codes SHOULD be taken from ObservationCategoryCodeshttp://hl7.org/fhir/ValueSet/observation-category
    (preferred to http://hl7.org/fhir/ValueSet/observation-category)

    Codes for high level observation categories.

    TypeCodeableConcept
    Is Modifierfalse
    Must Supporttrue
    Requirements

    Used for filtering what observations are retrieved and displayed.

    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    SlicingThis element introduces a set of slices on Observation.category. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • pattern @ $this
    • 10. Observation.category:VSCat
      Slice NameVSCat
      Definition

      A code that classifies the general type of observation being made.

      ShortVitalparameterkategorieClassification of type of observation
      Comments

      Motivation MS: Die Kategorie 'vital-signs' dient der Kategorisierung von Vitalparametern


      In addition to the required category valueset, this element allows various categorization schemes based on the owner’s definition of the category and effectively multiple categories can be used at once. The level of granularity is defined by the category concepts in the value set.

      Control10..1*
      This element is affected by the following invariants: ele-1
      BindingThe codes SHOULD be taken from ObservationCategoryCodeshttp://hl7.org/fhir/ValueSet/observation-category
      (preferred to http://hl7.org/fhir/ValueSet/observation-category)

      Codes for high level observation categories.

      TypeCodeableConcept
      Is Modifierfalse
      Must Supporttrue
      Requirements

      Used for filtering what observations are retrieved and displayed.

      Pattern Value{
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
          "code" : "vital-signs"
        }]
      }
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      12. Observation.code
      Definition

      Describes what was observed. Sometimes this is called the observation "name".

      ShortCodeType of observation (code / type)
      Comments

      Motivation MS: Die Observation wird anhand des Codes identifiziert.


      All code-value and, if present, component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.

      Control1..1
      This element is affected by the following invariants: ele-1
      BindingFor example codes, see LOINCCodeshttp://hl7.org/fhir/ValueSet/observation-codes
      (example to http://hl7.org/fhir/ValueSet/observation-codes)

      Codes identifying names of simple observations.

      TypeCodeableConcept
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Requirements

      Knowing what kind of observation is being made is essential to understanding the observation.

      Alternate NamesName
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      14. Observation.code.coding
      Definition

      A reference to a code defined by a terminology system.

      ShortCodingCode defined by a terminology system
      Comments

      Motivation MS: Semantische Kodierung


      Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

      Control10..*
      This element is affected by the following invariants: ele-1
      TypeCoding(ISiKCoding)
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Requirements

      Allows for alternative encodings within a code system, and translations to other code systems.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      SlicingThis element introduces a set of slices on Observation.code.coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • pattern @ $this
      • 16. Observation.code.coding.system
        Definition

        The identification of the code system that defines the meaning of the symbol in the code.

        ShortIdentity of the terminology system
        Comments

        The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

        Control10..1
        Typeuri
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Requirements

        Need to be unambiguous about the source of the definition of the symbol.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        18. Observation.code.coding.code
        Definition

        A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

        ShortSymbol in syntax defined by the system
        Control10..1
        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Requirements

        Need to refer to a particular code in the system.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        20. Observation.code.coding:loinc
        Slice Nameloinc
        Definition

        A reference to a code defined by a terminology system.

        ShortLOINC KodierungCode defined by a terminology system
        Comments

        Motivation MS: Kodierung des Vitalparameters mittels LOINC.


        Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

        Control10..1*
        This element is affected by the following invariants: ele-1
        TypeCoding(ISiKLoincCoding)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Requirements

        Allows for alternative encodings within a code system, and translations to other code systems.

        Pattern Value{
          "system" : "http://loinc.org",
          "code" : "85354-9"
        }
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        22. Observation.code.coding:snomed
        Slice Namesnomed
        Definition

        A reference to a code defined by a terminology system.

        ShortSNOMED CT KodierungCode defined by a terminology system
        Comments

        Motivation MS: Kodierung des Vitalparameters mittels SNOMED CT.


        Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

        Control0..*
        This element is affected by the following invariants: ele-1
        TypeCoding(ISiKSnomedCTCoding)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Requirements

        Allows for alternative encodings within a code system, and translations to other code systems.

        Pattern Value{
          "system" : "http://snomed.info/sct",
          "code" : "75367002"
        }
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        24. Observation.code.coding:snomed.system
        Definition

        The identification of the code system that defines the meaning of the symbol in the code.

        ShortIdentity of the terminology system
        Comments

        The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

        Control10..1
        Typeuri
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Requirements

        Need to be unambiguous about the source of the definition of the symbol.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        26. Observation.code.coding:snomed.code
        Definition

        A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

        ShortSymbol in syntax defined by the system
        Control10..1
        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Requirements

        Need to refer to a particular code in the system.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        28. Observation.code.coding:IEEE11073
        Slice NameIEEE11073
        Definition

        A reference to a code defined by a terminology system.

        ShortCode defined by a terminology system
        Comments

        Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

        Control0..1*
        This element is affected by the following invariants: ele-1
        TypeCoding
        Is Modifierfalse
        Summarytrue
        Requirements

        Allows for alternative encodings within a code system, and translations to other code systems.

        Pattern Value{
          "system" : "urn:iso:std:iso:11073:10101",
          "code" : "150016"
        }
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        30. Observation.code.coding:IEEE11073.system
        Definition

        The identification of the code system that defines the meaning of the symbol in the code.

        ShortIdentity of the terminology system
        Comments

        The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

        Control10..1
        Typeuri
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Requirements

        Need to be unambiguous about the source of the definition of the symbol.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        32. Observation.code.coding:IEEE11073.code
        Definition

        A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

        ShortSymbol in syntax defined by the system
        Control10..1
        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Requirements

        Need to refer to a particular code in the system.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        34. Observation.subject
        Definition

        The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the focus element or the code itself specifies the actual focus of the observation.

        ShortPatientWho and/or what the observation is about
        Comments

        Motivation MS: Die Verlinkung auf eine Patienten-Ressource dient der technischen Zuordnung der Dokumentation zu einem Patienten und ermöglicht wichtige API-Funktionen wie verkettete Suche, (Reverse-)Include etc.


        One would expect this element to be a cardinality of 1..1. The only circumstance in which the subject can be missing is when the observation is made by a device that does not know the patient. In this case, the observation SHALL be matched to a patient through some context/channel matching technique, and at this point, the observation should be updated.

        Control10..1
        This element is affected by the following invariants: ele-1
        TypeReference(Patient, Group, Device, Location)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Requirements

        Observations have no value if you don't know who or what they're about.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
        36. Observation.encounter
        Definition

        The healthcare event (e.g. a patient and healthcare provider interaction) during which this observation is made.

        ShortAufenthaltsbezugHealthcare event during which this observation is made
        Comments

        Motivation MS: Der Behandlungskontext ist für die Interpretation der Untersuchungsergebnisse relevant


        This will typically be the encounter the event occurred within, but some events may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter (e.g. pre-admission laboratory tests).

        Control0..1
        This element is affected by the following invariants: ele-1
        TypeReference(Encounter)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Requirements

        For some observations it may be important to know the link between an observation and a particular encounter.

        Alternate NamesContext
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
        38. Observation.encounter.reference
        Definition

        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

        ShortEncounter-LinkLiteral reference, Relative, internal or absolute URL
        Comments

        Begründung Pflichtfeld: Die Verlinkung auf eine Encounter-Ressource dient der technischen Zuordnung der Dokumentation zu einem Aufenthalt und ermöglicht wichtige API-Funktionen wie verkettete Suche, (Reverse-)Include etc.
        WICHTIGER Hinweis für Implementierer: Die Zuordnung MUSS auf auf einen Encounter der Ebene "Abteilungskontakt" (siehe hierzu Basismodul > UseCases > Abbildung des Konstruktes "Fall") erfolgen.
        Bei der Auswahl des Encounters ist zu beachten, dass unter einer (Abrechnungs-)"Fallnummer" (hier: Encounter.account) unter Umständen mehrere Encounter gruppiert sein können (z.B. stationärer Besuch mit mehreren vor- und nachstationären Aufenthalten.)


        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

        Control10..1
        This element is affected by the following invariants: ref-1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        40. Observation.effective[x]
        Definition

        The time or time-period the observed value is asserted as being true. For biological subjects - e.g. human patients - this is usually called the "physiologically relevant time". This is usually either the time of the procedure or of specimen collection, but very often the source of the date/time is not known, only the date/time itself.

        ShortDatum und Uhrzeit der UntersuchungClinically relevant time/time-period for observation
        Comments

        Motivation MS: Das Datum und die Uhrzeit der Untersuchung sind für die Interpretation der Untersuchungsergebnisse relevant


        At least a date should be present unless this observation is a historical report. For recording imprecise or "fuzzy" times (For example, a blood glucose measurement taken "after breakfast") use the Timing datatype which allow the measurement to be tied to regular life events.

        Control10..1
        This element is affected by the following invariants: ele-1
        TypeChoice of: dateTime, Period, Timing, instant
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Must Support TypesNo must-support rules about the choice of types/profiles
        Summarytrue
        Requirements

        Knowing when an observation was deemed true is important to its relevance as well as determining trends.

        Alternate NamesOccurrence
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        vs-de-1: If Observation.effective[x] has a value then that value shall be precise to the day ((($this is dateTime) implies ($this as dateTime).toString().length() >= 10) and ($this.start.exists() implies ($this.start as dateTime).toString().length() >= 10) and ($this.end.exists() implies ($this.end as dateTime).toString().length() >= 10))
        42. Observation.performer
        Definition

        Who was responsible for asserting the observed value as "true".

        ShortUntersuchenderWho is responsible for the observation
        Comments

        Motivation MS: Dieses Feld stellt eine präzisierende Angaben zum Zweck der Qualitätsbewertung bereit

        Control0..*
        This element is affected by the following invariants: ele-1
        TypeReference(Practitioner, PractitionerRole, Organization, CareTeam, Patient, RelatedPerson)
        Is Modifierfalse
        Must Supporttrue
        Must Support TypesNo must-support rules about the choice of types/profiles
        Summarytrue
        Requirements

        May give a degree of confidence in the observation and also indicates where follow-up questions should be directed.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
        44. Observation.value[x]
        Definition

        The information determined as a result of making the observation, if the information has a simple value.

        ShortUntersuchungsergebnisActual result
        Comments

        Motivation MS: Der Wert des Vitalparameters ist das zentrale Ergebnis der Untersuchung


        An observation may have; 1) a single value here, 2) both a value and a set of related or component values, or 3) only a set of related or component values. If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

        Control0..01
        This element is affected by the following invariants: ele-1, obs-7
        TypeChoice of: CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period, Quantity
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Must Support TypesNo must-support rules about the choice of types/profiles
        Summarytrue
        Requirements

        An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        SlicingThis element introduces a set of slices on Observation.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • type @ $this
        • 46. Observation.value[x]:valueQuantity
          Slice NamevalueQuantity
          Definition

          The information determined as a result of making the observation, if the information has a simple value.

          ShortActual result
          Comments

          An observation may have; 1) a single value here, 2) both a value and a set of related or component values, or 3) only a set of related or component values. If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

          Control0..01
          This element is affected by the following invariants: ele-1, obs-7
          TypeQuantity, dateTime, boolean, string, SampledData, Period, Ratio, integer, time, Range, CodeableConcept
          Is Modifierfalse
          Summarytrue
          Requirements

          An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          53. Observation.dataAbsentReason
          Definition

          Provides a reason why the expected value in the element Observation.value[x] is missing.

          ShortGrund für fehlende UntersuchungsergebnisseWhy the result is missing
          Comments

          Motivation MS: Dieses Feld erlaubt die Angabe von Gründen für fehlende Untersuchungsergebnisse


          Null or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "specimen unsatisfactory".

          The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Note that an observation may only be reported if there are values to report. For example differential cell counts values may be reported only when > 0. Because of these options, use-case agreements are required to interpret general observations for null or exceptional values.

          Control0..1
          This element is affected by the following invariants: ele-1, obs-6
          BindingUnless not suitable, these codes SHALL be taken from DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason
          (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

          Codes specifying why the result (Observation.value[x]) is missing.

          TypeCodeableConcept
          Is Modifierfalse
          Must Supporttrue
          Requirements

          For many results it is necessary to handle exceptional values in measurements.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          55. Observation.method
          Definition

          Indicates the mechanism used to perform the observation.

          ShortUntersuchungsmethodeHow it was done
          Comments

          Motivation MS: Dieses Feld stellt eine präzisierende Angaben zum Zweck der Qualitätsbewertung bereit


          Only used if not implicit in code for Observation.code.

          Control0..1
          This element is affected by the following invariants: ele-1
          BindingFor example codes, see ObservationMethodshttp://hl7.org/fhir/ValueSet/observation-methods
          (example to http://hl7.org/fhir/ValueSet/observation-methods)

          Methods for simple observations.

          TypeCodeableConcept
          Is Modifierfalse
          Must Supporttrue
          Requirements

          In some cases, method can impact results and is thus used for determining whether results can be compared or determining significance of results.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          57. Observation.device
          Definition

          The device used to generate the observation data.

          ShortGerät(Measurement) Device
          Comments

          Motivation MS: Dieses Feld stellt eine präzisierende Angaben zum Zweck der Qualitätsbewertung bereit


          Note that this is not meant to represent a device involved in the transmission of the result, e.g., a gateway. Such devices may be documented using the Provenance resource where relevant.

          Control0..1
          This element is affected by the following invariants: ele-1
          TypeReference(Device, DeviceMetric)
          Is Modifierfalse
          Must Supporttrue
          Must Support TypesNo must-support rules about the choice of types/profiles
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
          59. Observation.component
          Definition

          Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

          ShortVitalparameter-KomponenteComponent results
          Comments

          Motivation MS: Erfassung der Komponenten eines Vitalparameters


          For a discussion on the ways Observations can be assembled in groups together see Notes below.

          Control20..*
          This element is affected by the following invariants: ele-1
          TypeBackboneElement
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Requirements

          Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())
          SlicingThis element introduces a set of slices on Observation.component. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • pattern @ code
          • 61. Observation.component.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            63. Observation.component.code
            Definition

            Describes what was observed. Sometimes this is called the observation "code".

            ShortCodeType of component observation (code / type)
            Comments

            Motivation MS: Die Komponente wird anhand des Codes identifiziert.


            All code-value and component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.

            Control1..1
            This element is affected by the following invariants: ele-1
            BindingFor example codes, see LOINCCodeshttp://hl7.org/fhir/ValueSet/observation-codes
            (example to http://hl7.org/fhir/ValueSet/observation-codes)

            Codes identifying names of simple observations.

            TypeCodeableConcept
            Is Modifierfalse
            Must Supporttrue
            Summarytrue
            Requirements

            Knowing what kind of observation is being made is essential to understanding the observation.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            65. Observation.component.code.coding
            Definition

            A reference to a code defined by a terminology system.

            ShortCodingCode defined by a terminology system
            Comments

            Motivation MS: Semantische Kodierung


            Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

            Control0..*
            This element is affected by the following invariants: ele-1
            TypeCoding
            Is Modifierfalse
            Must Supporttrue
            Summarytrue
            Requirements

            Allows for alternative encodings within a code system, and translations to other code systems.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            67. Observation.component.value[x]
            Definition

            The information determined as a result of making the observation, if the information has a simple value.

            ShortWert der KomponenteActual component result
            Comments

            Motivation MS: Der Wert der Komponente ist ein Ergebnis der Untersuchung


            Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

            Control0..1
            This element is affected by the following invariants: ele-1
            TypeChoice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supporttrue
            Must Support TypesNo must-support rules about the choice of types/profiles
            Summarytrue
            Requirements

            An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            SlicingThis element introduces a set of slices on Observation.component.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • type @ $this
            • 69. Observation.component.value[x]:valueQuantity
              Slice NamevalueQuantity
              Definition

              The information determined as a result of making the observation, if the information has a simple value.

              ShortActual component result
              Comments

              Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

              Control0..1
              This element is affected by the following invariants: ele-1
              TypeQuantity, dateTime, boolean, string, SampledData, Period, Ratio, integer, time, Range, CodeableConcept
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summarytrue
              Requirements

              An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              71. Observation.component.value[x]:valueQuantity.value
              Definition

              The value of the measured amount. The value includes an implicit precision in the presentation of the value.

              ShortNumerical value (with implicit precision)
              Comments

              The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).

              Control10..1
              Typedecimal
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Requirements

              Precision is handled implicitly in almost all cases of measurement.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              73. Observation.component.value[x]:valueQuantity.comparator
              Definition

              How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.

              Short< | <= | >= | > - how to understand the value
              Control0..1
              BindingThe codes SHALL be taken from QuantityComparatorhttp://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
              (required to http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1)

              How the Quantity should be understood and represented.

              Typecode
              Is Modifiertrue because This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Requirements

              Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.

              Meaning if MissingIf there is no comparator, then there is no modification of the value
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              75. Observation.component.value[x]:valueQuantity.unit
              Definition

              A human-readable form of the unit.

              ShortUnit representation
              Comments

              Note that FHIR strings SHALL NOT exceed 1MB in size

              Control10..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Requirements

              There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              77. Observation.component.value[x]:valueQuantity.system
              Definition

              The identification of the system that provides the coded form of the unit.

              ShortSystem that defines coded unit form
              Comments

              see http://en.wikipedia.org/wiki/Uniform_resource_identifier

              Control10..1
              This element is affected by the following invariants: qty-3
              Typeuri
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Requirements

              Need to know the system that defines the coded form of the unit.

              Pattern Valuehttp://unitsofmeasure.org
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              79. Observation.component.value[x]:valueQuantity.code
              Definition

              A computer processable form of the unit in some unit representation system.

              ShortCoded form of the unit
              Comments

              The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system.

              Control10..1
              Typecode
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Requirements

              Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              81. Observation.component.dataAbsentReason
              Definition

              Provides a reason why the expected value in the element Observation.component.value[x] is missing.

              ShortGrund für fehlendes UntersuchungsergebnissWhy the component result is missing
              Comments

              Motivation MS: Dieses Feld erlaubt die Angabe von Gründen für fehlende Untersuchungsergebnisse


              "Null" or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "test not done".

              The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Because of these options, use-case agreements are required to interpret general observations for exceptional values.

              Control0..1
              This element is affected by the following invariants: ele-1, obs-6
              BindingUnless not suitable, these codes SHALL be taken from DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason
              (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

              Codes specifying why the result (Observation.value[x]) is missing.

              TypeCodeableConcept
              Is Modifierfalse
              Must Supporttrue
              Requirements

              For many results it is necessary to handle exceptional values in measurements.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              83. Observation.component:SystolicBP
              Slice NameSystolicBP
              Definition

              Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

              ShortSystolischer BlutdruckComponent results
              Comments

              Motivation MS: Kodierung des systolischen Blutdrucks.


              For a discussion on the ways Observations can be assembled in groups together see Notes below.

              Control10..1*
              This element is affected by the following invariants: ele-1
              TypeBackboneElement
              Is Modifierfalse
              Must Supporttrue
              Summarytrue
              Requirements

              Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())
              85. Observation.component:SystolicBP.modifierExtension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored even if unrecognized
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
              Summarytrue
              Requirements

              Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

              Alternate Namesextensions, user content, modifiers
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              87. Observation.component:SystolicBP.code
              Definition

              Describes what was observed. Sometimes this is called the observation "code".

              ShortCodeType of component observation (code / type)
              Comments

              Motivation MS: Die Komponente wird anhand des Codes identifiziert.


              All code-value and component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.

              Control1..1
              This element is affected by the following invariants: ele-1
              BindingFor example codes, see LOINCCodeshttp://hl7.org/fhir/ValueSet/observation-codes
              (example to http://hl7.org/fhir/ValueSet/observation-codes)

              Codes identifying names of simple observations.

              TypeCodeableConcept
              Is Modifierfalse
              Must Supporttrue
              Summarytrue
              Requirements

              Knowing what kind of observation is being made is essential to understanding the observation.

              Pattern Value{
                "coding" : [{
                  "system" : "http://loinc.org",
                  "code" : "8480-6"
                }]
              }
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              89. Observation.component:SystolicBP.code.coding
              Definition

              A reference to a code defined by a terminology system.

              ShortCodingCode defined by a terminology system
              Comments

              Motivation MS: Semantische Kodierung


              Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

              Control0..*
              This element is affected by the following invariants: ele-1
              TypeCoding
              Is Modifierfalse
              Must Supporttrue
              Summarytrue
              Requirements

              Allows for alternative encodings within a code system, and translations to other code systems.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              SlicingThis element introduces a set of slices on Observation.component.code.coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • pattern @ $this
              • 91. Observation.component:SystolicBP.code.coding:IEEE11073
                Slice NameIEEE11073
                Definition

                A reference to a code defined by a terminology system.

                ShortCode defined by a terminology system
                Comments

                Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                Control0..1*
                This element is affected by the following invariants: ele-1
                TypeCoding
                Is Modifierfalse
                Summarytrue
                Requirements

                Allows for alternative encodings within a code system, and translations to other code systems.

                Pattern Value{
                  "system" : "urn:iso:std:iso:11073:10101",
                  "code" : "150017"
                }
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                93. Observation.component:SystolicBP.code.coding:SCT
                Slice NameSCT
                Definition

                A reference to a code defined by a terminology system.

                ShortCode defined by a terminology system
                Comments

                Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                Control0..1*
                This element is affected by the following invariants: ele-1
                TypeCoding
                Is Modifierfalse
                Summarytrue
                Requirements

                Allows for alternative encodings within a code system, and translations to other code systems.

                Pattern Value{
                  "system" : "http://snomed.info/sct",
                  "code" : "271649006",
                  "display" : "Systolic blood pressure (observable entity)"
                }
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                95. Observation.component:SystolicBP.value[x]
                Definition

                The information determined as a result of making the observation, if the information has a simple value.

                ShortWert der KomponenteActual component result
                Comments

                Motivation MS: Der Wert der Komponente ist ein Ergebnis der Untersuchung


                Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

                Control0..1
                This element is affected by the following invariants: ele-1
                TypeQuantity, dateTime, boolean, string, SampledData, Period, Ratio, integer, time, Range, CodeableConcept
                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                Is Modifierfalse
                Must Supporttrue
                Summarytrue
                Requirements

                An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                SlicingThis element introduces a set of slices on Observation.component.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • type @ $this
                • 97. Observation.component:SystolicBP.value[x]:valueQuantity
                  Slice NamevalueQuantity
                  Definition

                  The information determined as a result of making the observation, if the information has a simple value.

                  Shortquantitatives UntersuchungsergebnisActual component result
                  Comments

                  Motivation MS: valueQuantity muss für VitalSigns unterstützt werden


                  Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeQuantity, dateTime, boolean, string, SampledData, Period, Ratio, integer, time, Range, CodeableConcept
                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                  Is Modifierfalse
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                  Pattern Value{
                    "system" : "http://unitsofmeasure.org",
                    "code" : "mm[Hg]"
                  }
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  99. Observation.component:SystolicBP.value[x]:valueQuantity.value
                  Definition

                  The value of the measured amount. The value includes an implicit precision in the presentation of the value.

                  ShortWertNumerical value (with implicit precision)
                  Comments

                  Motivation MS: Eine Quantity soll einen Wert enthalten


                  The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).

                  Control10..1
                  Typedecimal
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  Precision is handled implicitly in almost all cases of measurement.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  101. Observation.component:SystolicBP.value[x]:valueQuantity.comparator
                  Definition

                  How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.

                  Short< | <= | >= | > - how to understand the value
                  Control0..1
                  BindingThe codes SHALL be taken from QuantityComparatorhttp://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
                  (required to http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1)

                  How the Quantity should be understood and represented.

                  Typecode
                  Is Modifiertrue because This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Requirements

                  Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.

                  Meaning if MissingIf there is no comparator, then there is no modification of the value
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  103. Observation.component:SystolicBP.value[x]:valueQuantity.unit
                  Definition

                  A human-readable form of the unit.

                  ShortEinheitUnit representation
                  Comments

                  Motivation MS: Eine Quantity soll eine Einheit enthalten

                  Control10..1
                  Typestring
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  105. Observation.component:SystolicBP.value[x]:valueQuantity.system
                  Definition

                  The identification of the system that provides the coded form of the unit.

                  ShortCodeSystem aus dem die Einheit stammtSystem that defines coded unit form
                  Comments

                  Motivation MS: Eine Quantity soll ein System mit dem die Einheit kodiert wird enthalten

                  Control10..1
                  This element is affected by the following invariants: qty-3
                  Typeuri
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  Need to know the system that defines the coded form of the unit.

                  Pattern Valuehttp://unitsofmeasure.org
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  107. Observation.component:SystolicBP.value[x]:valueQuantity.code
                  Definition

                  A computer processable form of the unit in some unit representation system.

                  ShortCode der EinheitCoded form of the unit
                  Comments

                  Motivation MS: Eine Quantity soll einen Code der die Einheit kodiert enthalten


                  The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system.

                  Control10..1
                  Typecode
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  109. Observation.component:SystolicBP.dataAbsentReason
                  Definition

                  Provides a reason why the expected value in the element Observation.component.value[x] is missing.

                  ShortWhy the component result is missing
                  Comments

                  "Null" or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "test not done".

                  The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Because of these options, use-case agreements are required to interpret general observations for exceptional values.

                  Control0..1
                  This element is affected by the following invariants: ele-1, obs-6
                  BindingUnless not suitable, these codes SHALL be taken from DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason
                  (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

                  Codes specifying why the result (Observation.value[x]) is missing.

                  TypeCodeableConcept
                  Is Modifierfalse
                  Must Supporttrue
                  Requirements

                  For many results it is necessary to handle exceptional values in measurements.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  111. Observation.component:DiastolicBP
                  Slice NameDiastolicBP
                  Definition

                  Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

                  ShortDiastolischer BlutdruckComponent results
                  Comments

                  Motivation MS: Kodierung des diastolischen Blutdrucks.


                  For a discussion on the ways Observations can be assembled in groups together see Notes below.

                  Control10..1*
                  This element is affected by the following invariants: ele-1
                  TypeBackboneElement
                  Is Modifierfalse
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())
                  113. Observation.component:DiastolicBP.modifierExtension
                  Definition

                  May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                  ShortExtensions that cannot be ignored even if unrecognized
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                  Summarytrue
                  Requirements

                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                  Alternate Namesextensions, user content, modifiers
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  115. Observation.component:DiastolicBP.code
                  Definition

                  Describes what was observed. Sometimes this is called the observation "code".

                  ShortCodeType of component observation (code / type)
                  Comments

                  Motivation MS: Die Komponente wird anhand des Codes identifiziert.


                  All code-value and component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.

                  Control1..1
                  This element is affected by the following invariants: ele-1
                  BindingFor example codes, see LOINCCodeshttp://hl7.org/fhir/ValueSet/observation-codes
                  (example to http://hl7.org/fhir/ValueSet/observation-codes)

                  Codes identifying names of simple observations.

                  TypeCodeableConcept
                  Is Modifierfalse
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  Knowing what kind of observation is being made is essential to understanding the observation.

                  Pattern Value{
                    "coding" : [{
                      "system" : "http://loinc.org",
                      "code" : "8462-4"
                    }]
                  }
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  117. Observation.component:DiastolicBP.code.coding
                  Definition

                  A reference to a code defined by a terminology system.

                  ShortCodingCode defined by a terminology system
                  Comments

                  Motivation MS: Semantische Kodierung


                  Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                  Control0..*
                  This element is affected by the following invariants: ele-1
                  TypeCoding
                  Is Modifierfalse
                  Must Supporttrue
                  Summarytrue
                  Requirements

                  Allows for alternative encodings within a code system, and translations to other code systems.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  SlicingThis element introduces a set of slices on Observation.component.code.coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • pattern @ $this
                  • 119. Observation.component:DiastolicBP.code.coding:IEEE11073
                    Slice NameIEEE11073
                    Definition

                    A reference to a code defined by a terminology system.

                    ShortCode defined by a terminology system
                    Comments

                    Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                    Control0..1*
                    This element is affected by the following invariants: ele-1
                    TypeCoding
                    Is Modifierfalse
                    Summarytrue
                    Requirements

                    Allows for alternative encodings within a code system, and translations to other code systems.

                    Pattern Value{
                      "system" : "urn:iso:std:iso:11073:10101",
                      "code" : "150018"
                    }
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    121. Observation.component:DiastolicBP.code.coding:SCT
                    Slice NameSCT
                    Definition

                    A reference to a code defined by a terminology system.

                    ShortCode defined by a terminology system
                    Comments

                    Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                    Control0..1*
                    This element is affected by the following invariants: ele-1
                    TypeCoding
                    Is Modifierfalse
                    Summarytrue
                    Requirements

                    Allows for alternative encodings within a code system, and translations to other code systems.

                    Pattern Value{
                      "system" : "http://snomed.info/sct",
                      "code" : "271650006",
                      "display" : "Diastolic blood pressure (observable entity)"
                    }
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    123. Observation.component:DiastolicBP.value[x]
                    Definition

                    The information determined as a result of making the observation, if the information has a simple value.

                    ShortWert der KomponenteActual component result
                    Comments

                    Motivation MS: Der Wert der Komponente ist ein Ergebnis der Untersuchung


                    Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypeQuantity, dateTime, boolean, string, SampledData, Period, Ratio, integer, time, Range, CodeableConcept
                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                    Is Modifierfalse
                    Must Supporttrue
                    Summarytrue
                    Requirements

                    An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    SlicingThis element introduces a set of slices on Observation.component.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • type @ $this
                    • 125. Observation.component:DiastolicBP.value[x]:valueQuantity
                      Slice NamevalueQuantity
                      Definition

                      The information determined as a result of making the observation, if the information has a simple value.

                      Shortquantitatives UntersuchungsergebnisActual component result
                      Comments

                      Motivation MS: valueQuantity muss für VitalSigns unterstützt werden


                      Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeQuantity, dateTime, boolean, string, SampledData, Period, Ratio, integer, time, Range, CodeableConcept
                      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                      Is Modifierfalse
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                      Pattern Value{
                        "system" : "http://unitsofmeasure.org",
                        "code" : "mm[Hg]"
                      }
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      127. Observation.component:DiastolicBP.value[x]:valueQuantity.value
                      Definition

                      The value of the measured amount. The value includes an implicit precision in the presentation of the value.

                      ShortWertNumerical value (with implicit precision)
                      Comments

                      Motivation MS: Eine Quantity soll einen Wert enthalten


                      The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).

                      Control10..1
                      Typedecimal
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      Precision is handled implicitly in almost all cases of measurement.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      129. Observation.component:DiastolicBP.value[x]:valueQuantity.comparator
                      Definition

                      How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.

                      Short< | <= | >= | > - how to understand the value
                      Control0..1
                      BindingThe codes SHALL be taken from QuantityComparatorhttp://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
                      (required to http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1)

                      How the Quantity should be understood and represented.

                      Typecode
                      Is Modifiertrue because This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.

                      Meaning if MissingIf there is no comparator, then there is no modification of the value
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      131. Observation.component:DiastolicBP.value[x]:valueQuantity.unit
                      Definition

                      A human-readable form of the unit.

                      ShortEinheitUnit representation
                      Comments

                      Motivation MS: Eine Quantity soll eine Einheit enthalten

                      Control10..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      133. Observation.component:DiastolicBP.value[x]:valueQuantity.system
                      Definition

                      The identification of the system that provides the coded form of the unit.

                      ShortCodeSystem aus dem die Einheit stammtSystem that defines coded unit form
                      Comments

                      Motivation MS: Eine Quantity soll ein System mit dem die Einheit kodiert wird enthalten

                      Control10..1
                      This element is affected by the following invariants: qty-3
                      Typeuri
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      Need to know the system that defines the coded form of the unit.

                      Pattern Valuehttp://unitsofmeasure.org
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      135. Observation.component:DiastolicBP.value[x]:valueQuantity.code
                      Definition

                      A computer processable form of the unit in some unit representation system.

                      ShortCode der EinheitCoded form of the unit
                      Comments

                      Motivation MS: Eine Quantity soll einen Code der die Einheit kodiert enthalten


                      The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system.

                      Control10..1
                      Typecode
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      137. Observation.component:DiastolicBP.dataAbsentReason
                      Definition

                      Provides a reason why the expected value in the element Observation.component.value[x] is missing.

                      ShortGrund für fehlendes UntersuchungsergebnissWhy the component result is missing
                      Comments

                      Motivation MS: Dieses Feld erlaubt die Angabe von Gründen für fehlende Untersuchungsergebnisse


                      "Null" or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "test not done".

                      The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Because of these options, use-case agreements are required to interpret general observations for exceptional values.

                      Control0..1
                      This element is affected by the following invariants: ele-1, obs-6
                      BindingUnless not suitable, these codes SHALL be taken from DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason
                      (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

                      Codes specifying why the result (Observation.value[x]) is missing.

                      TypeCodeableConcept
                      Is Modifierfalse
                      Must Supporttrue
                      Requirements

                      For many results it is necessary to handle exceptional values in measurements.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      139. Observation.component:meanBP
                      Slice NamemeanBP
                      Definition

                      Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

                      ShortMittlerer arterieller DruckComponent results
                      Comments

                      Motivation MS: Kodierung des mittleren arteriellen Drucks.


                      For a discussion on the ways Observations can be assembled in groups together see Notes below.

                      Control0..0*
                      This element is affected by the following invariants: ele-1
                      TypeBackboneElement
                      Is Modifierfalse
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())

                      Guidance on how to interpret the contents of this table can be foundhere

                      0. Observation
                      Definition

                      Datenelemente des Blutdrucks

                      Comments

                      Profil ist Übersicht über AKTIN-spezifische Gegebenheiten

                      2. Observation.component:SystolicBP
                      Slice NameSystolicBP
                      4. Observation.component:SystolicBP.code
                      6. Observation.component:SystolicBP.code.coding:SCT
                      Slice NameSCT
                      Pattern Value{
                        "system" : "http://snomed.info/sct",
                        "code" : "271649006",
                        "display" : "Systolic blood pressure (observable entity)"
                      }
                      8. Observation.component:DiastolicBP
                      Slice NameDiastolicBP
                      10. Observation.component:DiastolicBP.code
                      12. Observation.component:DiastolicBP.code.coding:SCT
                      Slice NameSCT
                      Pattern Value{
                        "system" : "http://snomed.info/sct",
                        "code" : "271650006",
                        "display" : "Diastolic blood pressure (observable entity)"
                      }
                      14. Observation.component:meanBP
                      Slice NamemeanBP
                      Control0..0

                      Guidance on how to interpret the contents of this table can be foundhere

                      0. Observation
                      Definition

                      Datenelemente des Blutdrucks

                      ShortMeasurements and simple assertions
                      Comments

                      Profil ist Übersicht über AKTIN-spezifische Gegebenheiten

                      Control0..*
                      Is Modifierfalse
                      Summaryfalse
                      Alternate NamesVital Signs, Measurement, Results, Tests
                      Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
                      dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
                      dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
                      dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
                      dom-6: A resource should have narrative for robust management (text.`div`.exists())
                      obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present (value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty())
                      obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present (dataAbsentReason.empty() or value.empty())
                      vs-de-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present ((component.empty() and hasMember.empty()) implies (dataAbsentReason.exists() or value.exists()))
                      2. Observation.id
                      Definition

                      The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

                      ShortLogical id of this artifact
                      Comments

                      The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

                      Control0..1
                      Typeid
                      Is Modifierfalse
                      Summarytrue
                      4. Observation.meta
                      Definition

                      The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

                      ShortMetadata about the resource
                      Control0..1
                      TypeMeta
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      6. Observation.implicitRules
                      Definition

                      A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

                      ShortA set of rules under which this content was created
                      Comments

                      Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

                      Control0..1
                      Typeuri
                      Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      8. Observation.language
                      Definition

                      The base language in which the resource is written.

                      ShortLanguage of the resource content
                      Comments

                      Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

                      Control0..1
                      BindingThe codes SHOULD be taken from CommonLanguages
                      (preferred to http://hl7.org/fhir/ValueSet/languages)

                      A human language.

                      Additional BindingsPurpose
                      AllLanguagesMax Binding
                      Typecode
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      10. Observation.text
                      Definition

                      A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

                      ShortText summary of the resource, for human interpretation
                      Comments

                      Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

                      Control0..1
                      TypeNarrative
                      Is Modifierfalse
                      Summaryfalse
                      Alternate Namesnarrative, html, xhtml, display
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      12. Observation.contained
                      Definition

                      These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

                      ShortContained, inline Resources
                      Comments

                      This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

                      Control0..*
                      TypeResource
                      Is Modifierfalse
                      Summaryfalse
                      Alternate Namesinline resources, anonymous resources, contained resources
                      14. Observation.extension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                      ShortAdditional content defined by implementations
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Alternate Namesextensions, user content
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      SlicingThis element introduces a set of slices on Observation.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 16. Observation.modifierExtension
                        Definition

                        May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                        Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                        ShortExtensions that cannot be ignored
                        Comments

                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                        Control0..*
                        TypeExtension
                        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
                        Summaryfalse
                        Requirements

                        Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                        Alternate Namesextensions, user content
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        SlicingThis element introduces a set of slices on Observation.modifierExtension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ url
                        • 18. Observation.identifier
                          Definition

                          A unique identifier assigned to this observation.

                          ShortBusiness Identifier for observation
                          NoteThis is a business identifier, not a resource identifier (see discussion)
                          Control0..*
                          This element is affected by the following invariants: ele-1
                          TypeIdentifier
                          Is Modifierfalse
                          Summarytrue
                          Requirements

                          Allows observations to be distinguished and referenced.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          20. Observation.basedOn
                          Definition

                          A plan, proposal or order that is fulfilled in whole or in part by this event. For example, a MedicationRequest may require a patient to have laboratory test performed before it is dispensed.

                          ShortFulfills plan, proposal or order
                          Comments

                          References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

                          Control0..*
                          This element is affected by the following invariants: ele-1
                          TypeReference(CarePlan, DeviceRequest, ImmunizationRecommendation, MedicationRequest, NutritionOrder, ServiceRequest)
                          Is Modifierfalse
                          Summarytrue
                          Requirements

                          Allows tracing of authorization for the event and tracking whether proposals/recommendations were acted upon.

                          Alternate NamesFulfills
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                          22. Observation.partOf
                          Definition

                          A larger event of which this particular Observation is a component or step. For example, an observation as part of a procedure.

                          ShortPart of referenced event
                          Comments

                          To link an Observation to an Encounter use encounter. See the Notes below for guidance on referencing another Observation.

                          Control0..*
                          This element is affected by the following invariants: ele-1
                          TypeReference(MedicationAdministration, MedicationDispense, MedicationStatement, Procedure, Immunization, ImagingStudy)
                          Is Modifierfalse
                          Summarytrue
                          Alternate NamesContainer
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                          24. Observation.status
                          Definition

                          The status of the result value.

                          ShortUntersuchungsstatus
                          Comments

                          WICHTIGER Hinweis für Implementierer:

                          • Alle server-seitigen Implementierungen MÜSSEN in der Lage sein, die systemintern möglichen Statuswerte korrekt in FHIR abzubilden, mindestens jedoch final.
                          • Alle client-seitigen Implementierungen MÜSSEN in der Lage sein, sämtliche Status-Codes zu interpretieren und dem Anwender in angemessener Form darstellen zu können, beispielsweise durch Ausblenden/Durchstreichen von Ressourcen mit dem status entered-in-error und Ausgrauen von Ressourcen, die einen Plan- oder Entwurfs-Status haben.
                          Control1..1
                          BindingThe codes SHALL be taken from ObservationStatus
                          (required to http://hl7.org/fhir/ValueSet/observation-status|4.0.1)

                          Codes providing the status of an observation.

                          Typecode
                          Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supporttrue
                          Summarytrue
                          Requirements

                          Need to track the status of individual results. Some results are finalized before the whole report is finalized.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          26. Observation.category
                          Definition

                          A code that classifies the general type of observation being made.

                          ShortUntersuchungskategorie
                          Comments

                          Motivation MS: Dieses Feld erlaubt die Sortierung und Abfrage anhand der Kategorie der Untersuchung

                          Control1..*
                          This element is affected by the following invariants: ele-1
                          BindingThe codes SHOULD be taken from ObservationCategoryCodes
                          (preferred to http://hl7.org/fhir/ValueSet/observation-category)

                          Codes for high level observation categories.

                          TypeCodeableConcept
                          Is Modifierfalse
                          Must Supporttrue
                          Requirements

                          Used for filtering what observations are retrieved and displayed.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          SlicingThis element introduces a set of slices on Observation.category. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                          • pattern @ $this
                          • 28. Observation.category:VSCat
                            Slice NameVSCat
                            Definition

                            A code that classifies the general type of observation being made.

                            ShortVitalparameterkategorie
                            Comments

                            Motivation MS: Die Kategorie 'vital-signs' dient der Kategorisierung von Vitalparametern

                            Control1..1
                            This element is affected by the following invariants: ele-1
                            BindingThe codes SHOULD be taken from ObservationCategoryCodes
                            (preferred to http://hl7.org/fhir/ValueSet/observation-category)

                            Codes for high level observation categories.

                            TypeCodeableConcept
                            Is Modifierfalse
                            Must Supporttrue
                            Requirements

                            Used for filtering what observations are retrieved and displayed.

                            Pattern Value{
                              "coding" : [{
                                "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
                                "code" : "vital-signs"
                              }]
                            }
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            30. Observation.code
                            Definition

                            Describes what was observed. Sometimes this is called the observation "name".

                            ShortCode
                            Comments

                            Motivation MS: Die Observation wird anhand des Codes identifiziert.

                            Control1..1
                            This element is affected by the following invariants: ele-1
                            BindingFor example codes, see LOINCCodes
                            (example to http://hl7.org/fhir/ValueSet/observation-codes)

                            Codes identifying names of simple observations.

                            TypeCodeableConcept
                            Is Modifierfalse
                            Must Supporttrue
                            Summarytrue
                            Requirements

                            Knowing what kind of observation is being made is essential to understanding the observation.

                            Alternate NamesName
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            32. Observation.code.id
                            Definition

                            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                            ShortUnique id for inter-element referencing
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            34. Observation.code.extension
                            Definition

                            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                            ShortAdditional content defined by implementations
                            Comments

                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                            Control0..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Alternate Namesextensions, user content
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            SlicingThis element introduces a set of slices on Observation.code.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                            • value @ url
                            • 36. Observation.code.coding
                              Definition

                              A reference to a code defined by a terminology system.

                              ShortCoding
                              Comments

                              Motivation MS: Semantische Kodierung

                              Control1..*
                              This element is affected by the following invariants: ele-1
                              TypeCoding(ISiKCoding)
                              Is Modifierfalse
                              Must Supporttrue
                              Summarytrue
                              Requirements

                              Allows for alternative encodings within a code system, and translations to other code systems.

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              SlicingThis element introduces a set of slices on Observation.code.coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                              • pattern @ $this
                              • 38. Observation.code.coding.id
                                Definition

                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                ShortUnique id for inter-element referencing
                                Control0..1
                                Typestring
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                40. Observation.code.coding.extension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                ShortAdditional content defined by implementations
                                Comments

                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                Control0..*
                                TypeExtension
                                Is Modifierfalse
                                Summaryfalse
                                Alternate Namesextensions, user content
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                SlicingThis element introduces a set of slices on Observation.code.coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                • value @ url
                                • 42. Observation.code.coding.system
                                  Definition

                                  The identification of the code system that defines the meaning of the symbol in the code.

                                  ShortIdentity of the terminology system
                                  Comments

                                  The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

                                  Control1..1
                                  Typeuri
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Requirements

                                  Need to be unambiguous about the source of the definition of the symbol.

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  44. Observation.code.coding.version
                                  Definition

                                  The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

                                  ShortVersion of the system - if relevant
                                  Comments

                                  Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

                                  NoteThis is a business version Id, not a resource version Id (see discussion)
                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  46. Observation.code.coding.code
                                  Definition

                                  A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

                                  ShortSymbol in syntax defined by the system
                                  Control1..1
                                  Typecode
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Requirements

                                  Need to refer to a particular code in the system.

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  48. Observation.code.coding.display
                                  Definition

                                  A representation of the meaning of the code in the system, following the rules of the system.

                                  ShortRepresentation defined by the system
                                  Comments

                                  Note that FHIR strings SHALL NOT exceed 1MB in size

                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Requirements

                                  Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  50. Observation.code.coding.userSelected
                                  Definition

                                  Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).

                                  ShortIf this coding was chosen directly by the user
                                  Comments

                                  Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

                                  Control0..1
                                  Typeboolean
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Requirements

                                  This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  52. Observation.code.coding:loinc
                                  Slice Nameloinc
                                  Definition

                                  A reference to a code defined by a terminology system.

                                  ShortLOINC Kodierung
                                  Comments

                                  Motivation MS: Kodierung des Vitalparameters mittels LOINC.

                                  Control1..1
                                  This element is affected by the following invariants: ele-1
                                  TypeCoding(ISiKLoincCoding)
                                  Is Modifierfalse
                                  Must Supporttrue
                                  Summarytrue
                                  Requirements

                                  Allows for alternative encodings within a code system, and translations to other code systems.

                                  Pattern Value{
                                    "system" : "http://loinc.org",
                                    "code" : "85354-9"
                                  }
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  54. Observation.code.coding:snomed
                                  Slice Namesnomed
                                  Definition

                                  A reference to a code defined by a terminology system.

                                  ShortSNOMED CT Kodierung
                                  Comments

                                  Motivation MS: Kodierung des Vitalparameters mittels SNOMED CT.

                                  Control0..*
                                  This element is affected by the following invariants: ele-1
                                  TypeCoding(ISiKSnomedCTCoding)
                                  Is Modifierfalse
                                  Must Supporttrue
                                  Summarytrue
                                  Requirements

                                  Allows for alternative encodings within a code system, and translations to other code systems.

                                  Pattern Value{
                                    "system" : "http://snomed.info/sct",
                                    "code" : "75367002"
                                  }
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  56. Observation.code.coding:snomed.id
                                  Definition

                                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                  ShortUnique id for inter-element referencing
                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  XML FormatIn the XML format, this property is represented as an attribute.
                                  Summaryfalse
                                  58. Observation.code.coding:snomed.extension
                                  Definition

                                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                  ShortAdditional content defined by implementations
                                  Comments

                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                  Control0..*
                                  TypeExtension
                                  Is Modifierfalse
                                  Summaryfalse
                                  Alternate Namesextensions, user content
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  SlicingThis element introduces a set of slices on Observation.code.coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                  • value @ url
                                  • 60. Observation.code.coding:snomed.system
                                    Definition

                                    The identification of the code system that defines the meaning of the symbol in the code.

                                    ShortIdentity of the terminology system
                                    Comments

                                    The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

                                    Control1..1
                                    Typeuri
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Requirements

                                    Need to be unambiguous about the source of the definition of the symbol.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    62. Observation.code.coding:snomed.version
                                    Definition

                                    The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

                                    ShortVersion of the system - if relevant
                                    Comments

                                    Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

                                    NoteThis is a business version Id, not a resource version Id (see discussion)
                                    Control0..1
                                    Typestring
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    64. Observation.code.coding:snomed.code
                                    Definition

                                    A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

                                    ShortSymbol in syntax defined by the system
                                    Control1..1
                                    Typecode
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Requirements

                                    Need to refer to a particular code in the system.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    66. Observation.code.coding:snomed.display
                                    Definition

                                    A representation of the meaning of the code in the system, following the rules of the system.

                                    ShortRepresentation defined by the system
                                    Comments

                                    Note that FHIR strings SHALL NOT exceed 1MB in size

                                    Control0..1
                                    Typestring
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Requirements

                                    Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    68. Observation.code.coding:snomed.userSelected
                                    Definition

                                    Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).

                                    ShortIf this coding was chosen directly by the user
                                    Comments

                                    Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

                                    Control0..1
                                    Typeboolean
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Requirements

                                    This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    70. Observation.code.coding:IEEE11073
                                    Slice NameIEEE11073
                                    Definition

                                    A reference to a code defined by a terminology system.

                                    ShortCode defined by a terminology system
                                    Comments

                                    Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                                    Control0..1
                                    This element is affected by the following invariants: ele-1
                                    TypeCoding
                                    Is Modifierfalse
                                    Summarytrue
                                    Requirements

                                    Allows for alternative encodings within a code system, and translations to other code systems.

                                    Pattern Value{
                                      "system" : "urn:iso:std:iso:11073:10101",
                                      "code" : "150016"
                                    }
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    72. Observation.code.coding:IEEE11073.id
                                    Definition

                                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                    ShortUnique id for inter-element referencing
                                    Control0..1
                                    Typestring
                                    Is Modifierfalse
                                    XML FormatIn the XML format, this property is represented as an attribute.
                                    Summaryfalse
                                    74. Observation.code.coding:IEEE11073.extension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                    ShortAdditional content defined by implementations
                                    Comments

                                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                    Control0..*
                                    TypeExtension
                                    Is Modifierfalse
                                    Summaryfalse
                                    Alternate Namesextensions, user content
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    SlicingThis element introduces a set of slices on Observation.code.coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                    • value @ url
                                    • 76. Observation.code.coding:IEEE11073.system
                                      Definition

                                      The identification of the code system that defines the meaning of the symbol in the code.

                                      ShortIdentity of the terminology system
                                      Comments

                                      The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

                                      Control1..1
                                      Typeuri
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Requirements

                                      Need to be unambiguous about the source of the definition of the symbol.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      78. Observation.code.coding:IEEE11073.version
                                      Definition

                                      The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

                                      ShortVersion of the system - if relevant
                                      Comments

                                      Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

                                      NoteThis is a business version Id, not a resource version Id (see discussion)
                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      80. Observation.code.coding:IEEE11073.code
                                      Definition

                                      A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

                                      ShortSymbol in syntax defined by the system
                                      Control1..1
                                      Typecode
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Requirements

                                      Need to refer to a particular code in the system.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      82. Observation.code.coding:IEEE11073.display
                                      Definition

                                      A representation of the meaning of the code in the system, following the rules of the system.

                                      ShortRepresentation defined by the system
                                      Comments

                                      Note that FHIR strings SHALL NOT exceed 1MB in size

                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Requirements

                                      Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      84. Observation.code.coding:IEEE11073.userSelected
                                      Definition

                                      Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).

                                      ShortIf this coding was chosen directly by the user
                                      Comments

                                      Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Requirements

                                      This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      86. Observation.code.text
                                      Definition

                                      A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                                      ShortPlain text representation of the concept
                                      Comments

                                      Very often the text is the same as a displayName of one of the codings.

                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Requirements

                                      The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      88. Observation.subject
                                      Definition

                                      The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the focus element or the code itself specifies the actual focus of the observation.

                                      ShortPatient
                                      Comments

                                      Motivation MS: Die Verlinkung auf eine Patienten-Ressource dient der technischen Zuordnung der Dokumentation zu einem Patienten und ermöglicht wichtige API-Funktionen wie verkettete Suche, (Reverse-)Include etc.

                                      Control1..1
                                      This element is affected by the following invariants: ele-1
                                      TypeReference(Patient)
                                      Is Modifierfalse
                                      Must Supporttrue
                                      Summarytrue
                                      Requirements

                                      Observations have no value if you don't know who or what they're about.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                      90. Observation.focus
                                      Definition

                                      The actual focus of an observation when it is not the patient of record representing something or someone associated with the patient such as a spouse, parent, fetus, or donor. For example, fetus observations in a mother's record. The focus of an observation could also be an existing condition, an intervention, the subject's diet, another observation of the subject, or a body structure such as tumor or implanted device. An example use case would be using the Observation resource to capture whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is the focus.

                                      ShortWhat the observation is about, when it is not about the subject of record
                                      Comments

                                      Typically, an observation is made about the subject - a patient, or group of patients, location, or device - and the distinction between the subject and what is directly measured for an observation is specified in the observation code itself ( e.g., "Blood Glucose") and does not need to be represented separately using this element. Use specimen if a reference to a specimen is required. If a code is required instead of a resource use either bodysite for bodysites or the standard extension focusCode.

                                      Control0..*
                                      This element is affected by the following invariants: ele-1
                                      TypeReference(Resource)
                                      Is Modifierfalse
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                      92. Observation.encounter
                                      Definition

                                      The healthcare event (e.g. a patient and healthcare provider interaction) during which this observation is made.

                                      ShortAufenthaltsbezug
                                      Comments

                                      Motivation MS: Der Behandlungskontext ist für die Interpretation der Untersuchungsergebnisse relevant

                                      Control0..1
                                      This element is affected by the following invariants: ele-1
                                      TypeReference(Encounter)
                                      Is Modifierfalse
                                      Must Supporttrue
                                      Summarytrue
                                      Requirements

                                      For some observations it may be important to know the link between an observation and a particular encounter.

                                      Alternate NamesContext
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                      94. Observation.encounter.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      96. Observation.encounter.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                      ShortAdditional content defined by implementations
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      SlicingThis element introduces a set of slices on Observation.encounter.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                      • value @ url
                                      • 98. Observation.encounter.reference
                                        Definition

                                        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                        ShortEncounter-Link
                                        Comments

                                        Begründung Pflichtfeld: Die Verlinkung auf eine Encounter-Ressource dient der technischen Zuordnung der Dokumentation zu einem Aufenthalt und ermöglicht wichtige API-Funktionen wie verkettete Suche, (Reverse-)Include etc.
                                        WICHTIGER Hinweis für Implementierer: Die Zuordnung MUSS auf auf einen Encounter der Ebene "Abteilungskontakt" (siehe hierzu Basismodul > UseCases > Abbildung des Konstruktes "Fall") erfolgen.
                                        Bei der Auswahl des Encounters ist zu beachten, dass unter einer (Abrechnungs-)"Fallnummer" (hier: Encounter.account) unter Umständen mehrere Encounter gruppiert sein können (z.B. stationärer Besuch mit mehreren vor- und nachstationären Aufenthalten.)

                                        Control1..1
                                        This element is affected by the following invariants: ref-1
                                        Typestring
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Must Supporttrue
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        100. Observation.encounter.type
                                        Definition

                                        The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                        The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                        ShortType the reference refers to (e.g. "Patient")
                                        Comments

                                        This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                        Control0..1
                                        BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                        (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                        Aa resource (or, for logical models, the URI of the logical model).

                                        Typeuri
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        102. Observation.encounter.identifier
                                        Definition

                                        An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                                        ShortLogical reference, when literal reference is not known
                                        Comments

                                        When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                        When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                        Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                        Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                        NoteThis is a business identifier, not a resource identifier (see discussion)
                                        Control0..1
                                        This element is affected by the following invariants: ele-1
                                        TypeIdentifier
                                        Is Modifierfalse
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        104. Observation.encounter.display
                                        Definition

                                        Plain text narrative that identifies the resource in addition to the resource reference.

                                        ShortText alternative for the resource
                                        Comments

                                        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        106. Observation.effective[x]
                                        Definition

                                        The time or time-period the observed value is asserted as being true. For biological subjects - e.g. human patients - this is usually called the "physiologically relevant time". This is usually either the time of the procedure or of specimen collection, but very often the source of the date/time is not known, only the date/time itself.

                                        ShortDatum und Uhrzeit der Untersuchung
                                        Comments

                                        Motivation MS: Das Datum und die Uhrzeit der Untersuchung sind für die Interpretation der Untersuchungsergebnisse relevant

                                        Control1..1
                                        This element is affected by the following invariants: ele-1
                                        TypeChoice of: dateTime, Period
                                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Must Supporttrue
                                        Must Support TypesNo must-support rules about the choice of types/profiles
                                        Summarytrue
                                        Requirements

                                        Knowing when an observation was deemed true is important to its relevance as well as determining trends.

                                        Alternate NamesOccurrence
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        vs-de-1: If Observation.effective[x] has a value then that value shall be precise to the day ((($this is dateTime) implies ($this as dateTime).toString().length() >= 10) and ($this.start.exists() implies ($this.start as dateTime).toString().length() >= 10) and ($this.end.exists() implies ($this.end as dateTime).toString().length() >= 10))
                                        108. Observation.issued
                                        Definition

                                        The date and time this version of the observation was made available to providers, typically after the results have been reviewed and verified.

                                        ShortDate/Time this version was made available
                                        Comments

                                        For Observations that don’t require review and verification, it may be the same as the lastUpdated time of the resource itself. For Observations that do require review and verification for certain updates, it might not be the same as the lastUpdated time of the resource itself due to a non-clinically significant update that doesn’t require the new version to be reviewed and verified again.

                                        Control0..1
                                        Typeinstant
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        110. Observation.performer
                                        Definition

                                        Who was responsible for asserting the observed value as "true".

                                        ShortUntersuchender
                                        Comments

                                        Motivation MS: Dieses Feld stellt eine präzisierende Angaben zum Zweck der Qualitätsbewertung bereit

                                        Control0..*
                                        This element is affected by the following invariants: ele-1
                                        TypeReference(Practitioner, PractitionerRole, Organization, CareTeam, Patient, RelatedPerson)
                                        Is Modifierfalse
                                        Must Supporttrue
                                        Must Support TypesNo must-support rules about the choice of types/profiles
                                        Summarytrue
                                        Requirements

                                        May give a degree of confidence in the observation and also indicates where follow-up questions should be directed.

                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                        112. Observation.value[x]
                                        Definition

                                        The information determined as a result of making the observation, if the information has a simple value.

                                        ShortUntersuchungsergebnis
                                        Comments

                                        Motivation MS: Der Wert des Vitalparameters ist das zentrale Ergebnis der Untersuchung

                                        Control0..0
                                        This element is affected by the following invariants: ele-1, obs-7
                                        TypeChoice of: CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Must Supporttrue
                                        Must Support TypesNo must-support rules about the choice of types/profiles
                                        Summarytrue
                                        Requirements

                                        An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        SlicingThis element introduces a set of slices on Observation.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                        • type @ $this
                                        • 114. Observation.value[x]:valueQuantity
                                          Slice NamevalueQuantity
                                          Definition

                                          The information determined as a result of making the observation, if the information has a simple value.

                                          ShortActual result
                                          Comments

                                          An observation may have; 1) a single value here, 2) both a value and a set of related or component values, or 3) only a set of related or component values. If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

                                          Control0..0
                                          This element is affected by the following invariants: ele-1, obs-7
                                          TypeQuantity
                                          Is Modifierfalse
                                          Summarytrue
                                          Requirements

                                          An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          123. Observation.dataAbsentReason
                                          Definition

                                          Provides a reason why the expected value in the element Observation.value[x] is missing.

                                          ShortGrund für fehlende Untersuchungsergebnisse
                                          Comments

                                          Motivation MS: Dieses Feld erlaubt die Angabe von Gründen für fehlende Untersuchungsergebnisse

                                          Control0..1
                                          This element is affected by the following invariants: ele-1, obs-6
                                          BindingUnless not suitable, these codes SHALL be taken from DataAbsentReason
                                          (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

                                          Codes specifying why the result (Observation.value[x]) is missing.

                                          TypeCodeableConcept
                                          Is Modifierfalse
                                          Must Supporttrue
                                          Requirements

                                          For many results it is necessary to handle exceptional values in measurements.

                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          125. Observation.interpretation
                                          Definition

                                          A categorical assessment of an observation value. For example, high, low, normal.

                                          ShortHigh, low, normal, etc.
                                          Comments

                                          Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.

                                          Control0..*
                                          This element is affected by the following invariants: ele-1
                                          BindingUnless not suitable, these codes SHALL be taken from ObservationInterpretationCodes
                                          (extensible to http://hl7.org/fhir/ValueSet/observation-interpretation)

                                          Codes identifying interpretations of observations.

                                          TypeCodeableConcept
                                          Is Modifierfalse
                                          Requirements

                                          For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.

                                          Alternate NamesAbnormal Flag
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          127. Observation.note
                                          Definition

                                          Comments about the observation or the results.

                                          ShortComments about the observation
                                          Comments

                                          May include general statements about the observation, or statements about significant, unexpected or unreliable results values, or information about its source when relevant to its interpretation.

                                          Control0..*
                                          This element is affected by the following invariants: ele-1
                                          TypeAnnotation
                                          Is Modifierfalse
                                          Requirements

                                          Need to be able to provide free text additional information.

                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          129. Observation.bodySite
                                          Definition

                                          Indicates the site on the subject's body where the observation was made (i.e. the target site).

                                          ShortObserved body part
                                          Comments

                                          Only used if not implicit in code found in Observation.code. In many systems, this may be represented as a related observation instead of an inline component.

                                          If the use case requires BodySite to be handled as a separate resource (e.g. to identify and track separately) then use the standard extension bodySite.

                                          Control0..1
                                          This element is affected by the following invariants: ele-1
                                          BindingFor example codes, see SNOMEDCTBodyStructures
                                          (example to http://hl7.org/fhir/ValueSet/body-site)

                                          Codes describing anatomical locations. May include laterality.

                                          TypeCodeableConcept
                                          Is Modifierfalse
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          131. Observation.method
                                          Definition

                                          Indicates the mechanism used to perform the observation.

                                          ShortUntersuchungsmethode
                                          Comments

                                          Motivation MS: Dieses Feld stellt eine präzisierende Angaben zum Zweck der Qualitätsbewertung bereit

                                          Control0..1
                                          This element is affected by the following invariants: ele-1
                                          BindingFor example codes, see ObservationMethods
                                          (example to http://hl7.org/fhir/ValueSet/observation-methods)

                                          Methods for simple observations.

                                          TypeCodeableConcept
                                          Is Modifierfalse
                                          Must Supporttrue
                                          Requirements

                                          In some cases, method can impact results and is thus used for determining whether results can be compared or determining significance of results.

                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          133. Observation.specimen
                                          Definition

                                          The specimen that was used when this observation was made.

                                          ShortSpecimen used for this observation
                                          Comments

                                          Should only be used if not implicit in code found in Observation.code. Observations are not made on specimens themselves; they are made on a subject, but in many cases by the means of a specimen. Note that although specimens are often involved, they are not always tracked and reported explicitly. Also note that observation resources may be used in contexts that track the specimen explicitly (e.g. Diagnostic Report).

                                          Control0..1
                                          This element is affected by the following invariants: ele-1
                                          TypeReference(Specimen)
                                          Is Modifierfalse
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                          135. Observation.device
                                          Definition

                                          The device used to generate the observation data.

                                          ShortGerät
                                          Comments

                                          Motivation MS: Dieses Feld stellt eine präzisierende Angaben zum Zweck der Qualitätsbewertung bereit

                                          Control0..1
                                          This element is affected by the following invariants: ele-1
                                          TypeReference(Device, DeviceMetric)
                                          Is Modifierfalse
                                          Must Supporttrue
                                          Must Support TypesNo must-support rules about the choice of types/profiles
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                          137. Observation.referenceRange
                                          Definition

                                          Guidance on how to interpret the value by comparison to a normal or recommended range. Multiple reference ranges are interpreted as an "OR". In other words, to represent two distinct target populations, two referenceRange elements would be used.

                                          ShortProvides guide for interpretation
                                          Comments

                                          Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.

                                          Control0..*
                                          This element is affected by the following invariants: ele-1
                                          TypeBackboneElement
                                          Is Modifierfalse
                                          Requirements

                                          Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.

                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          obs-3: Must have at least a low or a high or text (low.exists() or high.exists() or text.exists())
                                          139. Observation.referenceRange.id
                                          Definition

                                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                          ShortUnique id for inter-element referencing
                                          Control0..1
                                          Typestring
                                          Is Modifierfalse
                                          XML FormatIn the XML format, this property is represented as an attribute.
                                          Summaryfalse
                                          141. Observation.referenceRange.extension
                                          Definition

                                          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                          ShortAdditional content defined by implementations
                                          Comments

                                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                          Control0..*
                                          TypeExtension
                                          Is Modifierfalse
                                          Summaryfalse
                                          Alternate Namesextensions, user content
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          SlicingThis element introduces a set of slices on Observation.referenceRange.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                          • value @ url
                                          • 143. Observation.referenceRange.modifierExtension
                                            Definition

                                            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                            ShortExtensions that cannot be ignored even if unrecognized
                                            Comments

                                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                            Control0..*
                                            TypeExtension
                                            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                            Summarytrue
                                            Requirements

                                            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                            Alternate Namesextensions, user content, modifiers
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            145. Observation.referenceRange.low
                                            Definition

                                            The value of the low bound of the reference range. The low bound of the reference range endpoint is inclusive of the value (e.g. reference range is >=5 - <=9). If the low bound is omitted, it is assumed to be meaningless (e.g. reference range is <=2.3).

                                            ShortLow Range, if relevant
                                            Comments

                                            The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

                                            Control0..1
                                            This element is affected by the following invariants: ele-1, obs-3
                                            TypeQuantity(SimpleQuantity)
                                            Is Modifierfalse
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            qty-3: If a code for the unit is present, the system SHALL also be present (code.empty() or system.exists())
                                            sqty-1: The comparator is not used on a SimpleQuantity (comparator.empty())
                                            147. Observation.referenceRange.high
                                            Definition

                                            The value of the high bound of the reference range. The high bound of the reference range endpoint is inclusive of the value (e.g. reference range is >=5 - <=9). If the high bound is omitted, it is assumed to be meaningless (e.g. reference range is >= 2.3).

                                            ShortHigh Range, if relevant
                                            Comments

                                            The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

                                            Control0..1
                                            This element is affected by the following invariants: ele-1, obs-3
                                            TypeQuantity(SimpleQuantity)
                                            Is Modifierfalse
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            qty-3: If a code for the unit is present, the system SHALL also be present (code.empty() or system.exists())
                                            sqty-1: The comparator is not used on a SimpleQuantity (comparator.empty())
                                            149. Observation.referenceRange.type
                                            Definition

                                            Codes to indicate the what part of the targeted reference population it applies to. For example, the normal or therapeutic range.

                                            ShortReference range qualifier
                                            Comments

                                            This SHOULD be populated if there is more than one range. If this element is not present then the normal range is assumed.

                                            Control0..1
                                            This element is affected by the following invariants: ele-1
                                            BindingThe codes SHOULD be taken from ObservationReferenceRangeMeaningCodes
                                            (preferred to http://hl7.org/fhir/ValueSet/referencerange-meaning)

                                            Code for the meaning of a reference range.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Requirements

                                            Need to be able to say what kind of reference range this is - normal, recommended, therapeutic, etc., - for proper interpretation.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            151. Observation.referenceRange.appliesTo
                                            Definition

                                            Codes to indicate the target population this reference range applies to. For example, a reference range may be based on the normal population or a particular sex or race. Multiple appliesTo are interpreted as an "AND" of the target populations. For example, to represent a target population of African American females, both a code of female and a code for African American would be used.

                                            ShortReference range population
                                            Comments

                                            This SHOULD be populated if there is more than one range. If this element is not present then the normal population is assumed.

                                            Control0..*
                                            This element is affected by the following invariants: ele-1
                                            BindingFor example codes, see ObservationReferenceRangeAppliesToCodes
                                            (example to http://hl7.org/fhir/ValueSet/referencerange-appliesto)

                                            Codes identifying the population the reference range applies to.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Requirements

                                            Need to be able to identify the target population for proper interpretation.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            153. Observation.referenceRange.age
                                            Definition

                                            The age at which this reference range is applicable. This is a neonatal age (e.g. number of weeks at term) if the meaning says so.

                                            ShortApplicable age range, if relevant
                                            Comments

                                            The stated low and high value are assumed to have arbitrarily high precision when it comes to determining which values are in the range. I.e. 1.99 is not in the range 2 -> 3.

                                            Control0..1
                                            This element is affected by the following invariants: ele-1
                                            TypeRange
                                            Is Modifierfalse
                                            Requirements

                                            Some analytes vary greatly over age.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            rng-2: If present, low SHALL have a lower value than high (low.empty() or high.empty() or (low <= high))
                                            155. Observation.referenceRange.text
                                            Definition

                                            Text based reference range in an observation which may be used when a quantitative range is not appropriate for an observation. An example would be a reference value of "Negative" or a list or table of "normals".

                                            ShortText based reference range in an observation
                                            Comments

                                            Note that FHIR strings SHALL NOT exceed 1MB in size

                                            Control0..1
                                            Typestring
                                            Is Modifierfalse
                                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                            Summaryfalse
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            157. Observation.hasMember
                                            Definition

                                            This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group.

                                            ShortRelated resource that belongs to the Observation group
                                            Comments

                                            When using this element, an observation will typically have either a value or a set of related resources, although both may be present in some cases. For a discussion on the ways Observations can assembled in groups together, see Notes below. Note that a system may calculate results from QuestionnaireResponse into a final score and represent the score as an Observation.

                                            Control0..*
                                            This element is affected by the following invariants: ele-1
                                            TypeReference(Observation, QuestionnaireResponse, MolecularSequence)
                                            Is Modifierfalse
                                            Summarytrue
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                            159. Observation.derivedFrom
                                            Definition

                                            The target resource that represents a measurement from which this observation value is derived. For example, a calculated anion gap or a fetal measurement based on an ultrasound image.

                                            ShortRelated measurements the observation is made from
                                            Comments

                                            All the reference choices that are listed in this element can represent clinical observations and other measurements that may be the source for a derived value. The most common reference will be another Observation. For a discussion on the ways Observations can assembled in groups together, see Notes below.

                                            Control0..*
                                            This element is affected by the following invariants: ele-1
                                            TypeReference(DocumentReference, ImagingStudy, Media, QuestionnaireResponse, Observation, MolecularSequence)
                                            Is Modifierfalse
                                            Summarytrue
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                                            161. Observation.component
                                            Definition

                                            Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

                                            ShortVitalparameter-Komponente
                                            Comments

                                            Motivation MS: Erfassung der Komponenten eines Vitalparameters

                                            Control2..*
                                            This element is affected by the following invariants: ele-1
                                            TypeBackboneElement
                                            Is Modifierfalse
                                            Must Supporttrue
                                            Summarytrue
                                            Requirements

                                            Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())
                                            SlicingThis element introduces a set of slices on Observation.component. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                            • pattern @ code
                                            • 163. Observation.component.id
                                              Definition

                                              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                              ShortUnique id for inter-element referencing
                                              Control0..1
                                              Typestring
                                              Is Modifierfalse
                                              XML FormatIn the XML format, this property is represented as an attribute.
                                              Summaryfalse
                                              165. Observation.component.extension
                                              Definition

                                              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                              ShortAdditional content defined by implementations
                                              Comments

                                              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                              Control0..*
                                              TypeExtension
                                              Is Modifierfalse
                                              Summaryfalse
                                              Alternate Namesextensions, user content
                                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                              SlicingThis element introduces a set of slices on Observation.component.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                              • value @ url
                                              • 167. Observation.component.modifierExtension
                                                Definition

                                                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                                ShortExtensions that cannot be ignored even if unrecognized
                                                Comments

                                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                Control0..*
                                                TypeExtension
                                                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                                Summarytrue
                                                Requirements

                                                Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                                Alternate Namesextensions, user content, modifiers
                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                169. Observation.component.code
                                                Definition

                                                Describes what was observed. Sometimes this is called the observation "code".

                                                ShortCode
                                                Comments

                                                Motivation MS: Die Komponente wird anhand des Codes identifiziert.

                                                Control1..1
                                                This element is affected by the following invariants: ele-1
                                                BindingFor example codes, see LOINCCodes
                                                (example to http://hl7.org/fhir/ValueSet/observation-codes)

                                                Codes identifying names of simple observations.

                                                TypeCodeableConcept
                                                Is Modifierfalse
                                                Must Supporttrue
                                                Summarytrue
                                                Requirements

                                                Knowing what kind of observation is being made is essential to understanding the observation.

                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                171. Observation.component.code.id
                                                Definition

                                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                ShortUnique id for inter-element referencing
                                                Control0..1
                                                Typestring
                                                Is Modifierfalse
                                                XML FormatIn the XML format, this property is represented as an attribute.
                                                Summaryfalse
                                                173. Observation.component.code.extension
                                                Definition

                                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                ShortAdditional content defined by implementations
                                                Comments

                                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                Control0..*
                                                TypeExtension
                                                Is Modifierfalse
                                                Summaryfalse
                                                Alternate Namesextensions, user content
                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                SlicingThis element introduces a set of slices on Observation.component.code.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                • value @ url
                                                • 175. Observation.component.code.coding
                                                  Definition

                                                  A reference to a code defined by a terminology system.

                                                  ShortCoding
                                                  Comments

                                                  Motivation MS: Semantische Kodierung

                                                  Control0..*
                                                  This element is affected by the following invariants: ele-1
                                                  TypeCoding
                                                  Is Modifierfalse
                                                  Must Supporttrue
                                                  Summarytrue
                                                  Requirements

                                                  Allows for alternative encodings within a code system, and translations to other code systems.

                                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                  177. Observation.component.code.text
                                                  Definition

                                                  A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                                                  ShortPlain text representation of the concept
                                                  Comments

                                                  Very often the text is the same as a displayName of one of the codings.

                                                  Control0..1
                                                  Typestring
                                                  Is Modifierfalse
                                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                  Summarytrue
                                                  Requirements

                                                  The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                  179. Observation.component.value[x]
                                                  Definition

                                                  The information determined as a result of making the observation, if the information has a simple value.

                                                  ShortWert der Komponente
                                                  Comments

                                                  Motivation MS: Der Wert der Komponente ist ein Ergebnis der Untersuchung

                                                  Control0..1
                                                  This element is affected by the following invariants: ele-1
                                                  TypeChoice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period
                                                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                                  Is Modifierfalse
                                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                  Must Supporttrue
                                                  Must Support TypesNo must-support rules about the choice of types/profiles
                                                  Summarytrue
                                                  Requirements

                                                  An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                  SlicingThis element introduces a set of slices on Observation.component.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                  • type @ $this
                                                  • 181. Observation.component.value[x]:valueQuantity
                                                    Slice NamevalueQuantity
                                                    Definition

                                                    The information determined as a result of making the observation, if the information has a simple value.

                                                    ShortActual component result
                                                    Comments

                                                    Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the Notes section below.

                                                    Control0..1
                                                    This element is affected by the following invariants: ele-1
                                                    TypeQuantity
                                                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                                    Is Modifierfalse
                                                    Summarytrue
                                                    Requirements

                                                    An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                    183. Observation.component.value[x]:valueQuantity.id
                                                    Definition

                                                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                    ShortUnique id for inter-element referencing
                                                    Control0..1
                                                    Typestring
                                                    Is Modifierfalse
                                                    XML FormatIn the XML format, this property is represented as an attribute.
                                                    Summaryfalse
                                                    185. Observation.component.value[x]:valueQuantity.extension
                                                    Definition

                                                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                    ShortAdditional content defined by implementations
                                                    Comments

                                                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                    Control0..*
                                                    TypeExtension
                                                    Is Modifierfalse
                                                    Summaryfalse
                                                    Alternate Namesextensions, user content
                                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                    SlicingThis element introduces a set of slices on Observation.component.value[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                    • value @ url
                                                    • 187. Observation.component.value[x]:valueQuantity.value
                                                      Definition

                                                      The value of the measured amount. The value includes an implicit precision in the presentation of the value.

                                                      ShortNumerical value (with implicit precision)
                                                      Comments

                                                      The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).

                                                      Control1..1
                                                      Typedecimal
                                                      Is Modifierfalse
                                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                      Summarytrue
                                                      Requirements

                                                      Precision is handled implicitly in almost all cases of measurement.

                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      189. Observation.component.value[x]:valueQuantity.comparator
                                                      Definition

                                                      How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.

                                                      Short< | <= | >= | > - how to understand the value
                                                      Control0..1
                                                      BindingThe codes SHALL be taken from QuantityComparator
                                                      (required to http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1)

                                                      How the Quantity should be understood and represented.

                                                      Typecode
                                                      Is Modifiertrue because This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value
                                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                      Summarytrue
                                                      Requirements

                                                      Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.

                                                      Meaning if MissingIf there is no comparator, then there is no modification of the value
                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      191. Observation.component.value[x]:valueQuantity.unit
                                                      Definition

                                                      A human-readable form of the unit.

                                                      ShortUnit representation
                                                      Comments

                                                      Note that FHIR strings SHALL NOT exceed 1MB in size

                                                      Control1..1
                                                      Typestring
                                                      Is Modifierfalse
                                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                      Summarytrue
                                                      Requirements

                                                      There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.

                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      193. Observation.component.value[x]:valueQuantity.system
                                                      Definition

                                                      The identification of the system that provides the coded form of the unit.

                                                      ShortSystem that defines coded unit form
                                                      Comments

                                                      see http://en.wikipedia.org/wiki/Uniform_resource_identifier

                                                      Control1..1
                                                      This element is affected by the following invariants: qty-3
                                                      Typeuri
                                                      Is Modifierfalse
                                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                      Summarytrue
                                                      Requirements

                                                      Need to know the system that defines the coded form of the unit.

                                                      Pattern Valuehttp://unitsofmeasure.org
                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      195. Observation.component.value[x]:valueQuantity.code
                                                      Definition

                                                      A computer processable form of the unit in some unit representation system.

                                                      ShortCoded form of the unit
                                                      Comments

                                                      The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system.

                                                      Control1..1
                                                      Typecode
                                                      Is Modifierfalse
                                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                      Summarytrue
                                                      Requirements

                                                      Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.

                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      197. Observation.component.dataAbsentReason
                                                      Definition

                                                      Provides a reason why the expected value in the element Observation.component.value[x] is missing.

                                                      ShortGrund für fehlendes Untersuchungsergebniss
                                                      Comments

                                                      Motivation MS: Dieses Feld erlaubt die Angabe von Gründen für fehlende Untersuchungsergebnisse

                                                      Control0..1
                                                      This element is affected by the following invariants: ele-1, obs-6
                                                      BindingUnless not suitable, these codes SHALL be taken from DataAbsentReason
                                                      (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

                                                      Codes specifying why the result (Observation.value[x]) is missing.

                                                      TypeCodeableConcept
                                                      Is Modifierfalse
                                                      Must Supporttrue
                                                      Requirements

                                                      For many results it is necessary to handle exceptional values in measurements.

                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      199. Observation.component.interpretation
                                                      Definition

                                                      A categorical assessment of an observation value. For example, high, low, normal.

                                                      ShortHigh, low, normal, etc.
                                                      Comments

                                                      Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.

                                                      Control0..*
                                                      This element is affected by the following invariants: ele-1
                                                      BindingUnless not suitable, these codes SHALL be taken from ObservationInterpretationCodes
                                                      (extensible to http://hl7.org/fhir/ValueSet/observation-interpretation)

                                                      Codes identifying interpretations of observations.

                                                      TypeCodeableConcept
                                                      Is Modifierfalse
                                                      Requirements

                                                      For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.

                                                      Alternate NamesAbnormal Flag
                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      201. Observation.component.referenceRange
                                                      Definition

                                                      Guidance on how to interpret the value by comparison to a normal or recommended range.

                                                      ShortProvides guide for interpretation of component result
                                                      Comments

                                                      Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.

                                                      Control0..*
                                                      TypeSeettp://hl7.org/fhir/StructureDefinition/Observation#Observation.referenceRange
                                                      Requirements

                                                      Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.

                                                      203. Observation.component:SystolicBP
                                                      Slice NameSystolicBP
                                                      Definition

                                                      Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

                                                      ShortSystolischer Blutdruck
                                                      Comments

                                                      Motivation MS: Kodierung des systolischen Blutdrucks.

                                                      Control1..1
                                                      This element is affected by the following invariants: ele-1
                                                      TypeBackboneElement
                                                      Is Modifierfalse
                                                      Must Supporttrue
                                                      Summarytrue
                                                      Requirements

                                                      Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())
                                                      205. Observation.component:SystolicBP.id
                                                      Definition

                                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                      ShortUnique id for inter-element referencing
                                                      Control0..1
                                                      Typestring
                                                      Is Modifierfalse
                                                      XML FormatIn the XML format, this property is represented as an attribute.
                                                      Summaryfalse
                                                      207. Observation.component:SystolicBP.extension
                                                      Definition

                                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                      ShortAdditional content defined by implementations
                                                      Comments

                                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                      Control0..*
                                                      TypeExtension
                                                      Is Modifierfalse
                                                      Summaryfalse
                                                      Alternate Namesextensions, user content
                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                      SlicingThis element introduces a set of slices on Observation.component.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                      • value @ url
                                                      • 209. Observation.component:SystolicBP.modifierExtension
                                                        Definition

                                                        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                                        Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                                        ShortExtensions that cannot be ignored even if unrecognized
                                                        Comments

                                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                        Control0..*
                                                        TypeExtension
                                                        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                                        Summarytrue
                                                        Requirements

                                                        Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                                        Alternate Namesextensions, user content, modifiers
                                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                        211. Observation.component:SystolicBP.code
                                                        Definition

                                                        Describes what was observed. Sometimes this is called the observation "code".

                                                        ShortCode
                                                        Comments

                                                        Motivation MS: Die Komponente wird anhand des Codes identifiziert.

                                                        Control1..1
                                                        This element is affected by the following invariants: ele-1
                                                        BindingFor example codes, see LOINCCodes
                                                        (example to http://hl7.org/fhir/ValueSet/observation-codes)

                                                        Codes identifying names of simple observations.

                                                        TypeCodeableConcept
                                                        Is Modifierfalse
                                                        Must Supporttrue
                                                        Summarytrue
                                                        Requirements

                                                        Knowing what kind of observation is being made is essential to understanding the observation.

                                                        Pattern Value{
                                                          "coding" : [{
                                                            "system" : "http://loinc.org",
                                                            "code" : "8480-6"
                                                          }]
                                                        }
                                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                        213. Observation.component:SystolicBP.code.id
                                                        Definition

                                                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                        ShortUnique id for inter-element referencing
                                                        Control0..1
                                                        Typestring
                                                        Is Modifierfalse
                                                        XML FormatIn the XML format, this property is represented as an attribute.
                                                        Summaryfalse
                                                        215. Observation.component:SystolicBP.code.extension
                                                        Definition

                                                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                        ShortAdditional content defined by implementations
                                                        Comments

                                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                        Control0..*
                                                        TypeExtension
                                                        Is Modifierfalse
                                                        Summaryfalse
                                                        Alternate Namesextensions, user content
                                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                        SlicingThis element introduces a set of slices on Observation.component.code.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                        • value @ url
                                                        • 217. Observation.component:SystolicBP.code.coding
                                                          Definition

                                                          A reference to a code defined by a terminology system.

                                                          ShortCoding
                                                          Comments

                                                          Motivation MS: Semantische Kodierung

                                                          Control0..*
                                                          This element is affected by the following invariants: ele-1
                                                          TypeCoding
                                                          Is Modifierfalse
                                                          Must Supporttrue
                                                          Summarytrue
                                                          Requirements

                                                          Allows for alternative encodings within a code system, and translations to other code systems.

                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                          SlicingThis element introduces a set of slices on Observation.component.code.coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                          • pattern @ $this
                                                          • 219. Observation.component:SystolicBP.code.coding:IEEE11073
                                                            Slice NameIEEE11073
                                                            Definition

                                                            A reference to a code defined by a terminology system.

                                                            ShortCode defined by a terminology system
                                                            Comments

                                                            Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                                                            Control0..1
                                                            This element is affected by the following invariants: ele-1
                                                            TypeCoding
                                                            Is Modifierfalse
                                                            Summarytrue
                                                            Requirements

                                                            Allows for alternative encodings within a code system, and translations to other code systems.

                                                            Pattern Value{
                                                              "system" : "urn:iso:std:iso:11073:10101",
                                                              "code" : "150017"
                                                            }
                                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                            221. Observation.component:SystolicBP.code.coding:SCT
                                                            Slice NameSCT
                                                            Definition

                                                            A reference to a code defined by a terminology system.

                                                            ShortCode defined by a terminology system
                                                            Comments

                                                            Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                                                            Control0..1
                                                            This element is affected by the following invariants: ele-1
                                                            TypeCoding
                                                            Is Modifierfalse
                                                            Summarytrue
                                                            Requirements

                                                            Allows for alternative encodings within a code system, and translations to other code systems.

                                                            Pattern Value{
                                                              "system" : "http://snomed.info/sct",
                                                              "code" : "271649006",
                                                              "display" : "Systolic blood pressure (observable entity)"
                                                            }
                                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                            223. Observation.component:SystolicBP.code.text
                                                            Definition

                                                            A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                                                            ShortPlain text representation of the concept
                                                            Comments

                                                            Very often the text is the same as a displayName of one of the codings.

                                                            Control0..1
                                                            Typestring
                                                            Is Modifierfalse
                                                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                            Summarytrue
                                                            Requirements

                                                            The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                            225. Observation.component:SystolicBP.value[x]
                                                            Definition

                                                            The information determined as a result of making the observation, if the information has a simple value.

                                                            ShortWert der Komponente
                                                            Comments

                                                            Motivation MS: Der Wert der Komponente ist ein Ergebnis der Untersuchung

                                                            Control0..1
                                                            This element is affected by the following invariants: ele-1
                                                            TypeQuantity
                                                            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                                            Is Modifierfalse
                                                            Must Supporttrue
                                                            Summarytrue
                                                            Requirements

                                                            An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                            SlicingThis element introduces a set of slices on Observation.component.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                            • type @ $this
                                                            • 227. Observation.component:SystolicBP.value[x]:valueQuantity
                                                              Slice NamevalueQuantity
                                                              Definition

                                                              The information determined as a result of making the observation, if the information has a simple value.

                                                              Shortquantitatives Untersuchungsergebnis
                                                              Comments

                                                              Motivation MS: valueQuantity muss für VitalSigns unterstützt werden

                                                              Control0..1
                                                              This element is affected by the following invariants: ele-1
                                                              TypeQuantity
                                                              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                                              Is Modifierfalse
                                                              Must Supporttrue
                                                              Summarytrue
                                                              Requirements

                                                              An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                                              Pattern Value{
                                                                "system" : "http://unitsofmeasure.org",
                                                                "code" : "mm[Hg]"
                                                              }
                                                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                              229. Observation.component:SystolicBP.value[x]:valueQuantity.id
                                                              Definition

                                                              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                              ShortUnique id for inter-element referencing
                                                              Control0..1
                                                              Typestring
                                                              Is Modifierfalse
                                                              XML FormatIn the XML format, this property is represented as an attribute.
                                                              Summaryfalse
                                                              231. Observation.component:SystolicBP.value[x]:valueQuantity.extension
                                                              Definition

                                                              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                              ShortAdditional content defined by implementations
                                                              Comments

                                                              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                              Control0..*
                                                              TypeExtension
                                                              Is Modifierfalse
                                                              Summaryfalse
                                                              Alternate Namesextensions, user content
                                                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                              SlicingThis element introduces a set of slices on Observation.component.value[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                              • value @ url
                                                              • 233. Observation.component:SystolicBP.value[x]:valueQuantity.value
                                                                Definition

                                                                The value of the measured amount. The value includes an implicit precision in the presentation of the value.

                                                                ShortWert
                                                                Comments

                                                                Motivation MS: Eine Quantity soll einen Wert enthalten

                                                                Control1..1
                                                                Typedecimal
                                                                Is Modifierfalse
                                                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                Must Supporttrue
                                                                Summarytrue
                                                                Requirements

                                                                Precision is handled implicitly in almost all cases of measurement.

                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                235. Observation.component:SystolicBP.value[x]:valueQuantity.comparator
                                                                Definition

                                                                How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.

                                                                Short< | <= | >= | > - how to understand the value
                                                                Control0..1
                                                                BindingThe codes SHALL be taken from QuantityComparator
                                                                (required to http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1)

                                                                How the Quantity should be understood and represented.

                                                                Typecode
                                                                Is Modifiertrue because This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value
                                                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                Summarytrue
                                                                Requirements

                                                                Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.

                                                                Meaning if MissingIf there is no comparator, then there is no modification of the value
                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                237. Observation.component:SystolicBP.value[x]:valueQuantity.unit
                                                                Definition

                                                                A human-readable form of the unit.

                                                                ShortEinheit
                                                                Comments

                                                                Motivation MS: Eine Quantity soll eine Einheit enthalten

                                                                Control1..1
                                                                Typestring
                                                                Is Modifierfalse
                                                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                Must Supporttrue
                                                                Summarytrue
                                                                Requirements

                                                                There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.

                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                239. Observation.component:SystolicBP.value[x]:valueQuantity.system
                                                                Definition

                                                                The identification of the system that provides the coded form of the unit.

                                                                ShortCodeSystem aus dem die Einheit stammt
                                                                Comments

                                                                Motivation MS: Eine Quantity soll ein System mit dem die Einheit kodiert wird enthalten

                                                                Control1..1
                                                                This element is affected by the following invariants: qty-3
                                                                Typeuri
                                                                Is Modifierfalse
                                                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                Must Supporttrue
                                                                Summarytrue
                                                                Requirements

                                                                Need to know the system that defines the coded form of the unit.

                                                                Pattern Valuehttp://unitsofmeasure.org
                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                241. Observation.component:SystolicBP.value[x]:valueQuantity.code
                                                                Definition

                                                                A computer processable form of the unit in some unit representation system.

                                                                ShortCode der Einheit
                                                                Comments

                                                                Motivation MS: Eine Quantity soll einen Code der die Einheit kodiert enthalten

                                                                Control1..1
                                                                Typecode
                                                                Is Modifierfalse
                                                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                Must Supporttrue
                                                                Summarytrue
                                                                Requirements

                                                                Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.

                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                243. Observation.component:SystolicBP.dataAbsentReason
                                                                Definition

                                                                Provides a reason why the expected value in the element Observation.component.value[x] is missing.

                                                                ShortWhy the component result is missing
                                                                Comments

                                                                "Null" or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "test not done".

                                                                The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Because of these options, use-case agreements are required to interpret general observations for exceptional values.

                                                                Control0..1
                                                                This element is affected by the following invariants: ele-1, obs-6
                                                                BindingUnless not suitable, these codes SHALL be taken from DataAbsentReason
                                                                (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

                                                                Codes specifying why the result (Observation.value[x]) is missing.

                                                                TypeCodeableConcept
                                                                Is Modifierfalse
                                                                Must Supporttrue
                                                                Requirements

                                                                For many results it is necessary to handle exceptional values in measurements.

                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                245. Observation.component:SystolicBP.interpretation
                                                                Definition

                                                                A categorical assessment of an observation value. For example, high, low, normal.

                                                                ShortHigh, low, normal, etc.
                                                                Comments

                                                                Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.

                                                                Control0..*
                                                                This element is affected by the following invariants: ele-1
                                                                BindingUnless not suitable, these codes SHALL be taken from ObservationInterpretationCodes
                                                                (extensible to http://hl7.org/fhir/ValueSet/observation-interpretation)

                                                                Codes identifying interpretations of observations.

                                                                TypeCodeableConcept
                                                                Is Modifierfalse
                                                                Requirements

                                                                For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.

                                                                Alternate NamesAbnormal Flag
                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                247. Observation.component:SystolicBP.referenceRange
                                                                Definition

                                                                Guidance on how to interpret the value by comparison to a normal or recommended range.

                                                                ShortProvides guide for interpretation of component result
                                                                Comments

                                                                Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.

                                                                Control0..*
                                                                TypeSeettp://hl7.org/fhir/StructureDefinition/Observation#Observation.referenceRange
                                                                Requirements

                                                                Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.

                                                                249. Observation.component:DiastolicBP
                                                                Slice NameDiastolicBP
                                                                Definition

                                                                Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

                                                                ShortDiastolischer Blutdruck
                                                                Comments

                                                                Motivation MS: Kodierung des diastolischen Blutdrucks.

                                                                Control1..1
                                                                This element is affected by the following invariants: ele-1
                                                                TypeBackboneElement
                                                                Is Modifierfalse
                                                                Must Supporttrue
                                                                Summarytrue
                                                                Requirements

                                                                Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())
                                                                251. Observation.component:DiastolicBP.id
                                                                Definition

                                                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                                ShortUnique id for inter-element referencing
                                                                Control0..1
                                                                Typestring
                                                                Is Modifierfalse
                                                                XML FormatIn the XML format, this property is represented as an attribute.
                                                                Summaryfalse
                                                                253. Observation.component:DiastolicBP.extension
                                                                Definition

                                                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                                ShortAdditional content defined by implementations
                                                                Comments

                                                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                                Control0..*
                                                                TypeExtension
                                                                Is Modifierfalse
                                                                Summaryfalse
                                                                Alternate Namesextensions, user content
                                                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                                SlicingThis element introduces a set of slices on Observation.component.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                                • value @ url
                                                                • 255. Observation.component:DiastolicBP.modifierExtension
                                                                  Definition

                                                                  May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                                                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                                                  ShortExtensions that cannot be ignored even if unrecognized
                                                                  Comments

                                                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                                  Control0..*
                                                                  TypeExtension
                                                                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                                                  Summarytrue
                                                                  Requirements

                                                                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                                                  Alternate Namesextensions, user content, modifiers
                                                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                                  257. Observation.component:DiastolicBP.code
                                                                  Definition

                                                                  Describes what was observed. Sometimes this is called the observation "code".

                                                                  ShortCode
                                                                  Comments

                                                                  Motivation MS: Die Komponente wird anhand des Codes identifiziert.

                                                                  Control1..1
                                                                  This element is affected by the following invariants: ele-1
                                                                  BindingFor example codes, see LOINCCodes
                                                                  (example to http://hl7.org/fhir/ValueSet/observation-codes)

                                                                  Codes identifying names of simple observations.

                                                                  TypeCodeableConcept
                                                                  Is Modifierfalse
                                                                  Must Supporttrue
                                                                  Summarytrue
                                                                  Requirements

                                                                  Knowing what kind of observation is being made is essential to understanding the observation.

                                                                  Pattern Value{
                                                                    "coding" : [{
                                                                      "system" : "http://loinc.org",
                                                                      "code" : "8462-4"
                                                                    }]
                                                                  }
                                                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                  259. Observation.component:DiastolicBP.code.id
                                                                  Definition

                                                                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                                  ShortUnique id for inter-element referencing
                                                                  Control0..1
                                                                  Typestring
                                                                  Is Modifierfalse
                                                                  XML FormatIn the XML format, this property is represented as an attribute.
                                                                  Summaryfalse
                                                                  261. Observation.component:DiastolicBP.code.extension
                                                                  Definition

                                                                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                                  ShortAdditional content defined by implementations
                                                                  Comments

                                                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                                  Control0..*
                                                                  TypeExtension
                                                                  Is Modifierfalse
                                                                  Summaryfalse
                                                                  Alternate Namesextensions, user content
                                                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                                  SlicingThis element introduces a set of slices on Observation.component.code.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                                  • value @ url
                                                                  • 263. Observation.component:DiastolicBP.code.coding
                                                                    Definition

                                                                    A reference to a code defined by a terminology system.

                                                                    ShortCoding
                                                                    Comments

                                                                    Motivation MS: Semantische Kodierung

                                                                    Control0..*
                                                                    This element is affected by the following invariants: ele-1
                                                                    TypeCoding
                                                                    Is Modifierfalse
                                                                    Must Supporttrue
                                                                    Summarytrue
                                                                    Requirements

                                                                    Allows for alternative encodings within a code system, and translations to other code systems.

                                                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                    SlicingThis element introduces a set of slices on Observation.component.code.coding. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                                    • pattern @ $this
                                                                    • 265. Observation.component:DiastolicBP.code.coding:IEEE11073
                                                                      Slice NameIEEE11073
                                                                      Definition

                                                                      A reference to a code defined by a terminology system.

                                                                      ShortCode defined by a terminology system
                                                                      Comments

                                                                      Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                                                                      Control0..1
                                                                      This element is affected by the following invariants: ele-1
                                                                      TypeCoding
                                                                      Is Modifierfalse
                                                                      Summarytrue
                                                                      Requirements

                                                                      Allows for alternative encodings within a code system, and translations to other code systems.

                                                                      Pattern Value{
                                                                        "system" : "urn:iso:std:iso:11073:10101",
                                                                        "code" : "150018"
                                                                      }
                                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                      267. Observation.component:DiastolicBP.code.coding:SCT
                                                                      Slice NameSCT
                                                                      Definition

                                                                      A reference to a code defined by a terminology system.

                                                                      ShortCode defined by a terminology system
                                                                      Comments

                                                                      Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                                                                      Control0..1
                                                                      This element is affected by the following invariants: ele-1
                                                                      TypeCoding
                                                                      Is Modifierfalse
                                                                      Summarytrue
                                                                      Requirements

                                                                      Allows for alternative encodings within a code system, and translations to other code systems.

                                                                      Pattern Value{
                                                                        "system" : "http://snomed.info/sct",
                                                                        "code" : "271650006",
                                                                        "display" : "Diastolic blood pressure (observable entity)"
                                                                      }
                                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                      269. Observation.component:DiastolicBP.code.text
                                                                      Definition

                                                                      A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                                                                      ShortPlain text representation of the concept
                                                                      Comments

                                                                      Very often the text is the same as a displayName of one of the codings.

                                                                      Control0..1
                                                                      Typestring
                                                                      Is Modifierfalse
                                                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                      Summarytrue
                                                                      Requirements

                                                                      The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                      271. Observation.component:DiastolicBP.value[x]
                                                                      Definition

                                                                      The information determined as a result of making the observation, if the information has a simple value.

                                                                      ShortWert der Komponente
                                                                      Comments

                                                                      Motivation MS: Der Wert der Komponente ist ein Ergebnis der Untersuchung

                                                                      Control0..1
                                                                      This element is affected by the following invariants: ele-1
                                                                      TypeQuantity
                                                                      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                                                      Is Modifierfalse
                                                                      Must Supporttrue
                                                                      Summarytrue
                                                                      Requirements

                                                                      An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                      SlicingThis element introduces a set of slices on Observation.component.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                                      • type @ $this
                                                                      • 273. Observation.component:DiastolicBP.value[x]:valueQuantity
                                                                        Slice NamevalueQuantity
                                                                        Definition

                                                                        The information determined as a result of making the observation, if the information has a simple value.

                                                                        Shortquantitatives Untersuchungsergebnis
                                                                        Comments

                                                                        Motivation MS: valueQuantity muss für VitalSigns unterstützt werden

                                                                        Control0..1
                                                                        This element is affected by the following invariants: ele-1
                                                                        TypeQuantity
                                                                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                                                        Is Modifierfalse
                                                                        Must Supporttrue
                                                                        Summarytrue
                                                                        Requirements

                                                                        An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.

                                                                        Pattern Value{
                                                                          "system" : "http://unitsofmeasure.org",
                                                                          "code" : "mm[Hg]"
                                                                        }
                                                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                        275. Observation.component:DiastolicBP.value[x]:valueQuantity.id
                                                                        Definition

                                                                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                                                        ShortUnique id for inter-element referencing
                                                                        Control0..1
                                                                        Typestring
                                                                        Is Modifierfalse
                                                                        XML FormatIn the XML format, this property is represented as an attribute.
                                                                        Summaryfalse
                                                                        277. Observation.component:DiastolicBP.value[x]:valueQuantity.extension
                                                                        Definition

                                                                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                                                        ShortAdditional content defined by implementations
                                                                        Comments

                                                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                                                        Control0..*
                                                                        TypeExtension
                                                                        Is Modifierfalse
                                                                        Summaryfalse
                                                                        Alternate Namesextensions, user content
                                                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                                                        SlicingThis element introduces a set of slices on Observation.component.value[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                                                        • value @ url
                                                                        • 279. Observation.component:DiastolicBP.value[x]:valueQuantity.value
                                                                          Definition

                                                                          The value of the measured amount. The value includes an implicit precision in the presentation of the value.

                                                                          ShortWert
                                                                          Comments

                                                                          Motivation MS: Eine Quantity soll einen Wert enthalten

                                                                          Control1..1
                                                                          Typedecimal
                                                                          Is Modifierfalse
                                                                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                          Must Supporttrue
                                                                          Summarytrue
                                                                          Requirements

                                                                          Precision is handled implicitly in almost all cases of measurement.

                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          281. Observation.component:DiastolicBP.value[x]:valueQuantity.comparator
                                                                          Definition

                                                                          How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.

                                                                          Short< | <= | >= | > - how to understand the value
                                                                          Control0..1
                                                                          BindingThe codes SHALL be taken from QuantityComparator
                                                                          (required to http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1)

                                                                          How the Quantity should be understood and represented.

                                                                          Typecode
                                                                          Is Modifiertrue because This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value
                                                                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                          Summarytrue
                                                                          Requirements

                                                                          Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.

                                                                          Meaning if MissingIf there is no comparator, then there is no modification of the value
                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          283. Observation.component:DiastolicBP.value[x]:valueQuantity.unit
                                                                          Definition

                                                                          A human-readable form of the unit.

                                                                          ShortEinheit
                                                                          Comments

                                                                          Motivation MS: Eine Quantity soll eine Einheit enthalten

                                                                          Control1..1
                                                                          Typestring
                                                                          Is Modifierfalse
                                                                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                          Must Supporttrue
                                                                          Summarytrue
                                                                          Requirements

                                                                          There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.

                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          285. Observation.component:DiastolicBP.value[x]:valueQuantity.system
                                                                          Definition

                                                                          The identification of the system that provides the coded form of the unit.

                                                                          ShortCodeSystem aus dem die Einheit stammt
                                                                          Comments

                                                                          Motivation MS: Eine Quantity soll ein System mit dem die Einheit kodiert wird enthalten

                                                                          Control1..1
                                                                          This element is affected by the following invariants: qty-3
                                                                          Typeuri
                                                                          Is Modifierfalse
                                                                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                          Must Supporttrue
                                                                          Summarytrue
                                                                          Requirements

                                                                          Need to know the system that defines the coded form of the unit.

                                                                          Pattern Valuehttp://unitsofmeasure.org
                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          287. Observation.component:DiastolicBP.value[x]:valueQuantity.code
                                                                          Definition

                                                                          A computer processable form of the unit in some unit representation system.

                                                                          ShortCode der Einheit
                                                                          Comments

                                                                          Motivation MS: Eine Quantity soll einen Code der die Einheit kodiert enthalten

                                                                          Control1..1
                                                                          Typecode
                                                                          Is Modifierfalse
                                                                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                                                          Must Supporttrue
                                                                          Summarytrue
                                                                          Requirements

                                                                          Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.

                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          289. Observation.component:DiastolicBP.dataAbsentReason
                                                                          Definition

                                                                          Provides a reason why the expected value in the element Observation.component.value[x] is missing.

                                                                          ShortGrund für fehlendes Untersuchungsergebniss
                                                                          Comments

                                                                          Motivation MS: Dieses Feld erlaubt die Angabe von Gründen für fehlende Untersuchungsergebnisse

                                                                          Control0..1
                                                                          This element is affected by the following invariants: ele-1, obs-6
                                                                          BindingUnless not suitable, these codes SHALL be taken from DataAbsentReason
                                                                          (extensible to http://hl7.org/fhir/ValueSet/data-absent-reason)

                                                                          Codes specifying why the result (Observation.value[x]) is missing.

                                                                          TypeCodeableConcept
                                                                          Is Modifierfalse
                                                                          Must Supporttrue
                                                                          Requirements

                                                                          For many results it is necessary to handle exceptional values in measurements.

                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          291. Observation.component:DiastolicBP.interpretation
                                                                          Definition

                                                                          A categorical assessment of an observation value. For example, high, low, normal.

                                                                          ShortHigh, low, normal, etc.
                                                                          Comments

                                                                          Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.

                                                                          Control0..*
                                                                          This element is affected by the following invariants: ele-1
                                                                          BindingUnless not suitable, these codes SHALL be taken from ObservationInterpretationCodes
                                                                          (extensible to http://hl7.org/fhir/ValueSet/observation-interpretation)

                                                                          Codes identifying interpretations of observations.

                                                                          TypeCodeableConcept
                                                                          Is Modifierfalse
                                                                          Requirements

                                                                          For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.

                                                                          Alternate NamesAbnormal Flag
                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          293. Observation.component:DiastolicBP.referenceRange
                                                                          Definition

                                                                          Guidance on how to interpret the value by comparison to a normal or recommended range.

                                                                          ShortProvides guide for interpretation of component result
                                                                          Comments

                                                                          Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.

                                                                          Control0..*
                                                                          TypeSeettp://hl7.org/fhir/StructureDefinition/Observation#Observation.referenceRange
                                                                          Requirements

                                                                          Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.

                                                                          295. Observation.component:meanBP
                                                                          Slice NamemeanBP
                                                                          Definition

                                                                          Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.

                                                                          ShortMittlerer arterieller Druck
                                                                          Comments

                                                                          Motivation MS: Kodierung des mittleren arteriellen Drucks.

                                                                          Control0..0
                                                                          This element is affected by the following invariants: ele-1
                                                                          TypeBackboneElement
                                                                          Is Modifierfalse
                                                                          Must Supporttrue
                                                                          Summarytrue
                                                                          Requirements

                                                                          Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.

                                                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                                                          vs-de-3: If there is no a value a data absent reason must be present (value.exists() xor dataAbsentReason.exists())