Release 4
This page is part of the FHIR Specification (v4.0.1: R4 - Mixed Normative and STU ). This is the current published version in it's permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions
Orders and Observations Work Group   Maturity Level : 1 Trial Use Use Context : Any

The official URL for this profile is:

http://hl7.org/fhir/StructureDefinition/devicemetricobservation

This profile describes the direct or derived, qualitative or quantitative physiological measurement, setting, or calculation data produced by a medical device or a device component.

This profile was published on Mon, Nov 17, 2014 00:00+1100 00:00+0000 as a draft by Health Level Seven International (Health Care Devices).

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work .

This structure is derived from Observation .

Summary

Mandatory: 5 elements
Must-Support: 12 elements
Prohibited: 4 elements

Name Flags Card. Type Description & Constraints doco
. . Observation I 0..* Observation Measurements and simple assertions
. . . id Σ 0..1 string id Logical id of this artifact
. . . meta Σ I 0..1 Meta Metadata about the resource
. . . implicitRules ?! Σ I 0..1 uri A set of rules under which this content was created
. . . language I 0..1 code Language of the resource content
Binding: Common Languages ( preferred )
Max Binding: All Languages
. . . text I 0..1 Narrative Text summary of the resource, for human interpretation
. . . contained 0..* Resource Contained, inline Resources
. . . extension I 0..* Extension Additional content defined by implementations
. . . modifierExtension ?! I 0..* Extension Extensions that cannot be ignored
. . . identifier S Σ I 0..* Identifier Business Identifier for observation
. . . basedOn Σ I 0..* Reference ( CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest ) Fulfills plan, proposal or order
. . . partOf Σ I 0..* Reference ( MedicationAdministration | MedicationDispense | MedicationStatement MedicationUsage | Procedure | Immunization | ImagingStudy ) Part of referenced event
. . . status ?! S Σ I 1..1 code registered | preliminary | final | amended +
Binding: ObservationStatus ( required )
. . . category I 0..* CodeableConcept Classification of type of observation
Binding: Observation Category Codes ( preferred )
. . . code S Σ I 1..1 CodeableConcept Type of observation (code / type)
Binding: LOINC Codes ( example )
. . . subject S Σ I 1..1 Reference ( Patient | Device ) Who and/or what the observation is about
. . . focus Σ I 0..* Reference ( Resource ) What the observation is about, when it is not about the subject of record
. . . effective[x] Σ I 1 .. 1 (Slice Definition) Clinically relevant time/time-period for observation
Slice: Unordered, Closed by type:$this
. . . . effective[x]:effectiveDateTime S Σ I 1..1 dateTime Clinically relevant time/time-period for observation
. . . performer Σ I 0..* Reference ( Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson ) Who is responsible for the observation
. . . value[x] S Σ I 0..1 Actual result
. . . . valueQuantity Quantity
. . . . valueCodeableConcept CodeableConcept
. . . . valueString string
. . . . valueRange Range
. . . . valueRatio Ratio
. . . . valueSampledData SampledData
. . . . valueTime time
. . . . valueDateTime dateTime
. . . . valuePeriod Period
. . . interpretation I 0..1 CodeableConcept High, low, normal, etc.
Binding: Observation Interpretation Codes ( extensible )
. . . note I 0..* Annotation Comments about the observation
. . . bodySite S I 0..1 CodeableConcept Observed body part
Binding: SNOMED CT Body Structures ( example )
. . . method S I 0..1 CodeableConcept How it was done
Binding: Observation Methods ( example )
. . . device S I 1..1 Reference ( DeviceMetric ) (Measurement) Device
. . . referenceRange S I 0..1 BackboneElement Provides guide for interpretation
. . . . id 0..1 string id Unique id for inter-element referencing
. . . . extension I 0..* Extension Additional content defined by implementations
. . . . modifierExtension ?! Σ I 0..* Extension Extensions that cannot be ignored even if unrecognized
. . . . low I 0..1 SimpleQuantity Low Range, if relevant
. . . . high I 0..1 SimpleQuantity High Range, if relevant
. . . . type I 0..1 CodeableConcept Reference range qualifier
Binding: Observation Reference Range Meaning Codes ( preferred )
. . . . appliesTo I 0..* CodeableConcept Reference range population
Binding: Observation Reference Range Applies To Codes ( example )
. . . . age I 0..1 Range Applicable age range, if relevant
. . . . text I 0..1 string Text based reference range in an observation
. . . hasMember S Σ I 0..* Reference ( Observation ) Related resource that belongs to the Observation group
. . . derivedFrom S Σ I 0..* Reference ( Observation ) Related measurements the observation is made from
. . . component Σ I 0..* BackboneElement Component results
. . . . id 0..1 string id Unique id for inter-element referencing
. . . . extension I 0..* Extension Additional content defined by implementations
. . . . modifierExtension ?! Σ I 0..* Extension Extensions that cannot be ignored even if unrecognized
. . . . code Σ I 1..1 CodeableConcept Type of component observation (code / type)
Binding: LOINC Codes ( example )
. . . . value[x] Σ I 0..1 Actual component result
. . . . . valueQuantity Quantity
. . . . . valueCodeableConcept CodeableConcept
. . . . . valueString string
. . . . . valueBoolean boolean
. . . . . valueInteger integer
. . . . . valueRange Range
. . . . . valueRatio Ratio
. . . . . valueSampledData SampledData
. . . . . valueTime time
. . . . . valueDateTime dateTime
. . . . . valuePeriod Period
. . . . . valueAttachment Attachment
.... dataAbsentReason I 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason ( extensible )
. . . . interpretation I 0..* CodeableConcept High, low, normal, etc.
Binding: Observation Interpretation Codes ( extensible )
. . . . referenceRange I 0..* Unknown reference to #Observation.referenceRange
Provides guide for interpretation of component result

doco Documentation for this format
<!-- Device Metric Observation Profile -->doco
<Observation xmlns="http://hl7.org/fhir"
>
  <!-- from Element: extension -->
 <</id>

 <id value="[id]"/><!-- 0..1 Logical id of this artifact -->

 <meta><!-- ?? 0..1 Meta Metadata about the resource --></meta>
 <implicitRules value="[uri]"/><!-- ?? 0..1 A set of rules under which this content was created -->
 <language value="[code]"/><!-- ?? 0..1 Language of the resource content   -->
 <text><!-- ?? 0..1 Narrative 
     Text summary of the resource, for human interpretation --></text>
 <contained><!-- 0..* Resource Contained, inline Resources --></contained>
 <modifierExtension><!-- ?? 0..* Extension  Extensions that cannot be ignored  --></modifierExtension>
 <identifier><!-- ?? 0..* Identifier 
     Business Identifier for observation --></identifier>
 <basedOn><!-- ?? 0..* Reference(CarePlan) Fulfills plan, proposal or order --></basedOn>
 <partOf><!-- ?? 0..* Reference(MedicationAdministration) Part of referenced event --></partOf>
 <status value="[code]"/><!-- ?? 1..1 registered | preliminary | final | amended +   -->
 <category><!-- ?? 0..* CodeableConcept Classification of  type of observation   --></category>
 <code><!-- ?? 1..1 CodeableConcept Type of observation (code / type)   --></code>
 <subject><!-- ?? 1..1 Reference(Patient) 
     Who and/or what the observation is about --></subject>
 <focus><!-- ?? 0..* Reference(Resource) 
     What the observation is about, when it is not about the subject of record --></focus>
 <encounter><!-- ?? 0..0 Reference(Encounter) 
     Healthcare event during which this observation is made --></encounter>
 <-- effectiveDateTime sliced by type:$this  in the specified orderClosed-->
 <effectiveDateTime value="[dateTime]"/><!-- ?? 1..1 Clinically relevant time/time-period for observation -->
 <issued value="[instant]"/><!-- ?? 0..0 Date/Time this version was made available -->
 <performer><!-- ?? 0..* Reference(Practitioner) 
     Who is responsible for the observation --></performer>
 <value[x]><!-- ?? 0..1 Quantity|CodeableConcept|string|Range|Ratio|
   SampledData|time|dateTime|Period Actual result --></value[x]>
 <dataAbsentReason><!-- ?? 0..0 CodeableConcept Why the result is missing   --></dataAbsentReason>
 <interpretation><!-- ?? 0..1 CodeableConcept High, low, normal, etc.   --></interpretation>
 <note><!-- ?? 0..* Annotation Comments about the observation --></note>
 <bodySite><!-- ?? 0..1 CodeableConcept Observed body part   --></bodySite>
 <method><!-- ?? 0..1 CodeableConcept How it was done   --></method>
 <specimen><!-- ?? 0..0 Reference(Specimen) Specimen used for this observation --></specimen>
 <device><!-- ?? 1..1 Reference(DeviceMetric) (Measurement) Device --></device>
 <

 <referenceRange> ?? 0..1 BackboneElement  <!-- ?? 0..1 Provides guide for interpretation -->

  <modifierExtension><!-- ?? 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>
  <low><!-- ?? 0..1 Quantity 
      Low Range, if relevant --></low>
  <high><!-- ?? 0..1 Quantity 
      High Range, if relevant --></high>
  <type><!-- ?? 0..1 CodeableConcept Reference range qualifier   --></type>
  <appliesTo><!-- ?? 0..* CodeableConcept Reference range population   --></appliesTo>
  <age><!-- ?? 0..1 Range 
      Applicable age range, if relevant --></age>
  <text value="[string]"/><!-- ?? 0..1 Text based reference range in an observation -->
 </referenceRange>
 <hasMember><!-- ?? 0..* Reference(Observation) 
     Related resource that belongs to the Observation group --></hasMember>
 <derivedFrom><!-- ?? 0..* Reference(Observation) 
     Related measurements the observation is made from --></derivedFrom>
 <

 <component> ?? 0..* BackboneElement  <!-- ?? 0..* Component results -->

  <modifierExtension><!-- ?? 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>
  <code><!-- ?? 1..1 CodeableConcept Type of component observation (code / type)   --></code>
  <value[x]><!-- ?? 0..1 Quantity|CodeableConcept|string|
    

    boolean|integer|Range|Ratio|SampledData|time|dateTime|Period|Attachment 
      Actual component result --></value[x]>
  <dataAbsentReason><!-- ?? 0..1 CodeableConcept Why the component result is missing   --></dataAbsentReason>
  <interpretation><!-- ?? 0..* CodeableConcept High, low, normal, etc.   --></interpretation>
  <referenceRange><!-- See #Observation.referenceRange  Provides guide for interpretation of component result --></referenceRange>
 </component>
</Observation>
{ // Device Metric Observation Profile
  // from Element: extension
    "meta" : { Meta }, // C?Metadata about the resource
    "implicitRules" : "<uri>", // C?A set of rules under which this content was created
    "language" : "<code>", // C?Language of the resource content
    "text" : { Narrative }, // C?Text summary of the resource, for human interpretation
    "contained" : [{ Resource }], //Contained, inline Resources
    "modifierExtension" : [{ Extension }], // C?Extensions that cannot be ignored
    "identifier" : [{ Identifier }], // C?Business Identifier for observation
    "basedOn" : [{ Reference(CarePlan) }], // C?Fulfills plan, proposal or order
    "partOf" : [{ Reference(MedicationAdministration) }], // C?Part of referenced event
    "status" : "<code>", // C? R! registered | preliminary | final | amended +
    "category" : [{ CodeableConcept }], // C?Classification of  type of observation
    "code" : { CodeableConcept }, // C? R! Type of observation (code / type)
    "subject" : { Reference(Patient) }, // C? R! Who and/or what the observation is about
    "focus" : [{ Reference(Resource) }], // C?What the observation is about, when it is not about the subject of record
    "effectiveDateTime" : [ //  sliced by type:$this  in the specified order, Closed 
      { // Clinically relevant time/time-period for observation // C? R! 
        // from Element: extension
      }
    ],
    "performer" : [{ Reference(Practitioner) }], // C?Who is responsible for the observation
// value[x]: Actual result. One of these 9:
    "valueQuantity" : { Quantity }, // C?Actual result
    "valueCodeableConcept" : { CodeableConcept }, // C?Actual result
    "valueString" : "<string>", // C?Actual result
    "valueRange" : { Range }, // C?Actual result
    "valueRatio" : { Ratio }, // C?Actual result
    "valueSampledData" : { SampledData }, // C?Actual result
    "valueTime" : "<time>", // C?Actual result
    "valueDateTime" : "<dateTime>", // C?Actual result
    "valuePeriod" : { Period }, // C?Actual result
    "interpretation" : { CodeableConcept }, // C?High, low, normal, etc.
    "note" : [{ Annotation }], // C?Comments about the observation
    "bodySite" : { CodeableConcept } // C?Observed body part
    "method" : { CodeableConcept }, // C?How it was done
    "device" : { Reference(DeviceMetric) }, // C? R! (Measurement) Device
    "

    "referenceRange" : { BackboneElement }, // C?Provides guide for interpretation

    "hasMember" : [{ Reference(Observation) }], // C?Related resource that belongs to the Observation group
    "derivedFrom" : [{ Reference(Observation) }], // C?Related measurements the observation is made from
    "

    "component" : [{ BackboneElement }], // C?Component results

  }

This structure is derived from Observation .

Summary

Mandatory: 5 elements
Must-Support: 12 elements
Prohibited: 4 elements

Snapshot View

Name Flags Card. Type Description & Constraints doco
. . Observation I 0..* Observation Measurements and simple assertions
. . . id Σ 0..1 string id Logical id of this artifact
. . . meta Σ I 0..1 Meta Metadata about the resource
. . . implicitRules ?! Σ I 0..1 uri A set of rules under which this content was created
. . . language I 0..1 code Language of the resource content
Binding: Common Languages ( preferred )
Max Binding: All Languages
. . . text I 0..1 Narrative Text summary of the resource, for human interpretation
. . . contained 0..* Resource Contained, inline Resources
. . . extension I 0..* Extension Additional content defined by implementations
. . . modifierExtension ?! I 0..* Extension Extensions that cannot be ignored
. . . identifier S Σ I 0..* Identifier Business Identifier for observation
. . . basedOn Σ I 0..* Reference ( CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest ) Fulfills plan, proposal or order
. . . partOf Σ I 0..* Reference ( MedicationAdministration | MedicationDispense | MedicationStatement MedicationUsage | Procedure | Immunization | ImagingStudy ) Part of referenced event
. . . status ?! S Σ I 1..1 code registered | preliminary | final | amended +
Binding: ObservationStatus ( required )
. . . category I 0..* CodeableConcept Classification of type of observation
Binding: Observation Category Codes ( preferred )
. . . code S Σ I 1..1 CodeableConcept Type of observation (code / type)
Binding: LOINC Codes ( example )
. . . subject S Σ I 1..1 Reference ( Patient | Device ) Who and/or what the observation is about
. . . focus Σ I 0..* Reference ( Resource ) What the observation is about, when it is not about the subject of record
. . . effective[x] Σ I 1 .. 1 (Slice Definition) Clinically relevant time/time-period for observation
Slice: Unordered, Closed by type:$this
. . . . effective[x]:effectiveDateTime S Σ I 1..1 dateTime Clinically relevant time/time-period for observation
. . . performer Σ I 0..* Reference ( Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson ) Who is responsible for the observation
. . . value[x] S Σ I 0..1 Actual result
. . . . valueQuantity Quantity
. . . . valueCodeableConcept CodeableConcept
. . . . valueString string
. . . . valueRange Range
. . . . valueRatio Ratio
. . . . valueSampledData SampledData
. . . . valueTime time
. . . . valueDateTime dateTime
. . . . valuePeriod Period
. . . interpretation I 0..1 CodeableConcept High, low, normal, etc.
Binding: Observation Interpretation Codes ( extensible )
. . . note I 0..* Annotation Comments about the observation
. . . bodySite S I 0..1 CodeableConcept Observed body part
Binding: SNOMED CT Body Structures ( example )
. . . method S I 0..1 CodeableConcept How it was done
Binding: Observation Methods ( example )
. . . device S I 1..1 Reference ( DeviceMetric ) (Measurement) Device
. . . referenceRange S I 0..1 BackboneElement Provides guide for interpretation
. . . . id 0..1 string id Unique id for inter-element referencing
. . . . extension I 0..* Extension Additional content defined by implementations
. . . . modifierExtension ?! Σ I 0..* Extension Extensions that cannot be ignored even if unrecognized
. . . . low I 0..1 SimpleQuantity Low Range, if relevant
. . . . high I 0..1 SimpleQuantity High Range, if relevant
. . . . type I 0..1 CodeableConcept Reference range qualifier
Binding: Observation Reference Range Meaning Codes ( preferred )
. . . . appliesTo I 0..* CodeableConcept Reference range population
Binding: Observation Reference Range Applies To Codes ( example )
. . . . age I 0..1 Range Applicable age range, if relevant
. . . . text I 0..1 string Text based reference range in an observation
. . . hasMember S Σ I 0..* Reference ( Observation ) Related resource that belongs to the Observation group
. . . derivedFrom S Σ I 0..* Reference ( Observation ) Related measurements the observation is made from
. . . component Σ I 0..* BackboneElement Component results
. . . . id 0..1 string id Unique id for inter-element referencing
. . . . extension I 0..* Extension Additional content defined by implementations
. . . . modifierExtension ?! Σ I 0..* Extension Extensions that cannot be ignored even if unrecognized
. . . . code Σ I 1..1 CodeableConcept Type of component observation (code / type)
Binding: LOINC Codes ( example )
. . . . value[x] Σ I 0..1 Actual component result
. . . . . valueQuantity Quantity
. . . . . valueCodeableConcept CodeableConcept
. . . . . valueString string
. . . . . valueBoolean boolean
. . . . . valueInteger integer
. . . . . valueRange Range
. . . . . valueRatio Ratio
. . . . . valueSampledData SampledData
. . . . . valueTime time
. . . . . valueDateTime dateTime
. . . . . valuePeriod Period
. . . . . valueAttachment Attachment
.... dataAbsentReason I 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason ( extensible )
. . . . interpretation I 0..* CodeableConcept High, low, normal, etc.
Binding: Observation Interpretation Codes ( extensible )
. . . . referenceRange I 0..* Unknown reference to #Observation.referenceRange
Provides guide for interpretation of component result

doco Documentation for this format

XML Template

<!-- Device Metric Observation Profile -->doco
<Observation xmlns="http://hl7.org/fhir"
>
  <!-- from Element: extension -->
 <</id>

 <id value="[id]"/><!-- 0..1 Logical id of this artifact -->

 <meta><!-- ?? 0..1 Meta Metadata about the resource --></meta>
 <implicitRules value="[uri]"/><!-- ?? 0..1 A set of rules under which this content was created -->
 <language value="[code]"/><!-- ?? 0..1 Language of the resource content   -->
 <text><!-- ?? 0..1 Narrative 
     Text summary of the resource, for human interpretation --></text>
 <contained><!-- 0..* Resource Contained, inline Resources --></contained>
 <modifierExtension><!-- ?? 0..* Extension  Extensions that cannot be ignored  --></modifierExtension>
 <identifier><!-- ?? 0..* Identifier 
     Business Identifier for observation --></identifier>
 <basedOn><!-- ?? 0..* Reference(CarePlan) Fulfills plan, proposal or order --></basedOn>
 <partOf><!-- ?? 0..* Reference(MedicationAdministration) Part of referenced event --></partOf>
 <status value="[code]"/><!-- ?? 1..1 registered | preliminary | final | amended +   -->
 <category><!-- ?? 0..* CodeableConcept Classification of  type of observation   --></category>
 <code><!-- ?? 1..1 CodeableConcept Type of observation (code / type)   --></code>
 <subject><!-- ?? 1..1 Reference(Patient) 
     Who and/or what the observation is about --></subject>
 <focus><!-- ?? 0..* Reference(Resource) 
     What the observation is about, when it is not about the subject of record --></focus>
 <encounter><!-- ?? 0..0 Reference(Encounter) 
     Healthcare event during which this observation is made --></encounter>
 <-- effectiveDateTime sliced by type:$this  in the specified orderClosed-->
 <effectiveDateTime value="[dateTime]"/><!-- ?? 1..1 Clinically relevant time/time-period for observation -->
 <issued value="[instant]"/><!-- ?? 0..0 Date/Time this version was made available -->
 <performer><!-- ?? 0..* Reference(Practitioner) 
     Who is responsible for the observation --></performer>
 <value[x]><!-- ?? 0..1 Quantity|CodeableConcept|string|Range|Ratio|
   SampledData|time|dateTime|Period Actual result --></value[x]>
 <dataAbsentReason><!-- ?? 0..0 CodeableConcept Why the result is missing   --></dataAbsentReason>
 <interpretation><!-- ?? 0..1 CodeableConcept High, low, normal, etc.   --></interpretation>
 <note><!-- ?? 0..* Annotation Comments about the observation --></note>
 <bodySite><!-- ?? 0..1 CodeableConcept Observed body part   --></bodySite>
 <method><!-- ?? 0..1 CodeableConcept How it was done   --></method>
 <specimen><!-- ?? 0..0 Reference(Specimen) Specimen used for this observation --></specimen>
 <device><!-- ?? 1..1 Reference(DeviceMetric) (Measurement) Device --></device>
 <

 <referenceRange> ?? 0..1 BackboneElement  <!-- ?? 0..1 Provides guide for interpretation -->

  <modifierExtension><!-- ?? 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>
  <low><!-- ?? 0..1 Quantity 
      Low Range, if relevant --></low>
  <high><!-- ?? 0..1 Quantity 
      High Range, if relevant --></high>
  <type><!-- ?? 0..1 CodeableConcept Reference range qualifier   --></type>
  <appliesTo><!-- ?? 0..* CodeableConcept Reference range population   --></appliesTo>
  <age><!-- ?? 0..1 Range 
      Applicable age range, if relevant --></age>
  <text value="[string]"/><!-- ?? 0..1 Text based reference range in an observation -->
 </referenceRange>
 <hasMember><!-- ?? 0..* Reference(Observation) 
     Related resource that belongs to the Observation group --></hasMember>
 <derivedFrom><!-- ?? 0..* Reference(Observation) 
     Related measurements the observation is made from --></derivedFrom>
 <

 <component> ?? 0..* BackboneElement  <!-- ?? 0..* Component results -->

  <modifierExtension><!-- ?? 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>
  <code><!-- ?? 1..1 CodeableConcept Type of component observation (code / type)   --></code>
  <value[x]><!-- ?? 0..1 Quantity|CodeableConcept|string|
    

    boolean|integer|Range|Ratio|SampledData|time|dateTime|Period|Attachment 
      Actual component result --></value[x]>
  <dataAbsentReason><!-- ?? 0..1 CodeableConcept Why the component result is missing   --></dataAbsentReason>
  <interpretation><!-- ?? 0..* CodeableConcept High, low, normal, etc.   --></interpretation>
  <referenceRange><!-- See #Observation.referenceRange  Provides guide for interpretation of component result --></referenceRange>
 </component>
</Observation>

JSON Template

{ // Device Metric Observation Profile
  // from Element: extension
    "meta" : { Meta }, // C?Metadata about the resource
    "implicitRules" : "<uri>", // C?A set of rules under which this content was created
    "language" : "<code>", // C?Language of the resource content
    "text" : { Narrative }, // C?Text summary of the resource, for human interpretation
    "contained" : [{ Resource }], //Contained, inline Resources
    "modifierExtension" : [{ Extension }], // C?Extensions that cannot be ignored
    "identifier" : [{ Identifier }], // C?Business Identifier for observation
    "basedOn" : [{ Reference(CarePlan) }], // C?Fulfills plan, proposal or order
    "partOf" : [{ Reference(MedicationAdministration) }], // C?Part of referenced event
    "status" : "<code>", // C? R! registered | preliminary | final | amended +
    "category" : [{ CodeableConcept }], // C?Classification of  type of observation
    "code" : { CodeableConcept }, // C? R! Type of observation (code / type)
    "subject" : { Reference(Patient) }, // C? R! Who and/or what the observation is about
    "focus" : [{ Reference(Resource) }], // C?What the observation is about, when it is not about the subject of record
    "effectiveDateTime" : [ //  sliced by type:$this  in the specified order, Closed 
      { // Clinically relevant time/time-period for observation // C? R! 
        // from Element: extension
      }
    ],
    "performer" : [{ Reference(Practitioner) }], // C?Who is responsible for the observation
// value[x]: Actual result. One of these 9:
    "valueQuantity" : { Quantity }, // C?Actual result
    "valueCodeableConcept" : { CodeableConcept }, // C?Actual result
    "valueString" : "<string>", // C?Actual result
    "valueRange" : { Range }, // C?Actual result
    "valueRatio" : { Ratio }, // C?Actual result
    "valueSampledData" : { SampledData }, // C?Actual result
    "valueTime" : "<time>", // C?Actual result
    "valueDateTime" : "<dateTime>", // C?Actual result
    "valuePeriod" : { Period }, // C?Actual result
    "interpretation" : { CodeableConcept }, // C?High, low, normal, etc.
    "note" : [{ Annotation }], // C?Comments about the observation
    "bodySite" : { CodeableConcept } // C?Observed body part
    "method" : { CodeableConcept }, // C?How it was done
    "device" : { Reference(DeviceMetric) }, // C? R! (Measurement) Device
    "

    "referenceRange" : { BackboneElement }, // C?Provides guide for interpretation

    "hasMember" : [{ Reference(Observation) }], // C?Related resource that belongs to the Observation group
    "derivedFrom" : [{ Reference(Observation) }], // C?Related measurements the observation is made from
    "

    "component" : [{ BackboneElement }], // C?Component results

  }

 

Alternate definitions: Master Definition ( XML , JSON ), Schematron

Path Name Conformance ValueSet
Observation.language Common Languages preferred Common Languages
Observation.status ObservationStatus required ObservationStatus
Observation.category Observation Category Codes preferred Observation Category Codes
Observation.code LOINC Codes example LOINC Codes
Observation.interpretation Observation Interpretation Codes extensible Observation Interpretation Codes
Observation.bodySite SNOMED CT Body Structures example SNOMED CT Body Structures
Observation.method Observation Methods example Observation Methods
Observation.referenceRange.type Observation Reference Range Meaning Codes preferred Observation Reference Range Meaning Codes
Observation.referenceRange.appliesTo Observation Reference Range Applies To Codes example Observation Reference Range Applies To Codes
Observation.component.code LOINC Codes example LOINC Codes
Observation.component.dataAbsentReason DataAbsentReason extensible DataAbsentReason
Observation.component.interpretation Observation Interpretation Codes extensible Observation Interpretation Codes
.