US Core Implementation Guide
6.0.0-ballot - STU6 Ballot US

This page is part of the US Core (v6.0.0-ballot: STU6 Ballot 1) based on FHIR R4. The current version which supercedes this version is 5.0.1. For a full list of available versions, see the Directory of published versions

Resource Profile: US Core BMI Profile

Official URL: http://hl7.org/fhir/us/core/StructureDefinition/us-core-bmi Version: 6.0.0-ballot
Active as of 2020-11-17 Computable Name: USCoreBMIProfile

Copyright/Legal: Used by permission of HL7 International, all rights reserved Creative Commons License

To promote interoperability and adoption through common implementation, this profile sets minimum expectations for the Observation resource to record, search, and fetch Body Mass Index (BMI) observations with a standard LOINC code and UCUM units of measure. It is based on the US Core Vital Signs Profile and identifies the additional mandatory core elements, extensions, vocabularies and value sets which SHALL be present in the Observation resource when using this profile. It provides the floor for standards development for specific use cases.

Example Usage Scenarios:

The following are example usage scenarios for this profile:

  • Query for body mass index (BMI) observations
  • Record or update body mass index (BMI) observations

Mandatory and Must Support Data Elements

In addition to the mandatory and must support data elements in the US Core Vital Signs Profile, the following data-elements must always be present (Mandatory definition) or must be supported if the data is present in the sending system (Must Support definition). They are presented below in a simple human-readable explanation. Profile specific guidance and examples are provided as well. The Formal Views below provides the formal summary, definitions, and terminology requirements.
Note that the “Differential Table” displays elements unique to this profile and the “Key Elements Table” displays a combined view of elements for this profile and the US Core Vital Signs Profile.

Each Observation must have:

  1. a patient
  2. a fixed code for body mass index (BMI)

Each Observation must support:

  1. a result value

Profile specific implementation guidance:

  • The observations MAY have additional codes that translate or map to the Observation code or category codes. For example:
    • providing a local system specific code
    • providing more specific codes such as 8306-3 - Body height - lying in addition to 8302-2 - Body height. Several additional observation codes are provided in the FHIR core specification vital signs table.

    Note that the code system value SHOULD be supplied for each additional code.

  • The observations MAY have component observations. For example, to qualify the vital sign observation 8310-5 - Body temperature, 8327-9 - *Body temperature measurement site** (oral, forehead, rectal, etc.) may be used as a component observation. Several of these are provided in the FHIR core specification vital signs table.
  • *An Observation without a value, SHALL include a reason why the data is absent unless there are 1) component observations, or 2) reporting panel observations using Observation.hasMember.
    • For further guidance see the Observation Grouping section in FHIR Specification.
    • Systems that never provide an observation without a value are not required to support Observation.dataAbsentReason.
  • *An Observation.component without a value, SHALL include a reason why the data is absent.
    • Systems that never provide a component observation without a component value are not required to support Observation.component.dataAbsentReason.

  • Implementers may use this profile as a base for other vital signs in addition to those in this guide.

  • See the US Core Pediatric BMI for Age Observation Profile for representing pediatric BMI measurements as a percentile based upon growth chart tables.

Usage:

  • This Resource Profile is not used by any profiles in this Implementation Guide

Formal Views of Profile Content

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

This structure is derived from USCoreVitalSignsProfile

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..*USCoreVitalSignsProfileUS Core Body Mass Index (BMI) Profile
... code S1..1CodeableConceptCoded Responses from C-CDA Vital Sign Results
Required Pattern: At least the following
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... system1..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... code1..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
... valueQuantity S0..1QuantityVital Signs Value
.... value S1..1decimalNumerical value (with implicit precision)
.... unit S1..1stringUnit representation
.... system S1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
.... code S1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Body Mass Index (BMI) Profile
... implicitRules ?!Σ0..1uriA set of rules under which this content was created
... modifierExtension ?!0..*ExtensionExtensions that cannot be ignored
... status ?!SΣ1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... Slices for category S1..*CodeableConceptClassification of type of observation
Slice: Unordered, Open by value:coding.code, value:coding.system
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


.... category:VSCat S1..1CodeableConceptClassification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... coding SΣ1..*CodingCode defined by a terminology system
...... system SΣ1..1uriIdentity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... code SΣ1..1codeSymbol in syntax defined by the system
Fixed Value: vital-signs
... code SΣ1..1CodeableConceptCoded Responses from C-CDA Vital Sign Results
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.


Required Pattern: At least the following
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... system1..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... code1..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
... subject SΣ1..1Reference(US Core Patient Profile)Who and/or what the observation is about
... effective[x] SΣC1..1Often just a dateTime for Vital Signs
.... effectiveDateTimedateTime
... Slices for value[x] SΣC0..1Vital Signs Value
Slice: Unordered, Open by type:$this
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

.... valueQuantityQuantity
.... value[x]:valueQuantity SΣC0..1QuantityVital Signs Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... value SΣ1..1decimalNumerical value (with implicit precision)
..... comparator ?!Σ0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

..... unit SΣ1..1stringUnit representation
..... system SΣC1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
..... code SΣ1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2
... dataAbsentReason SC0..1CodeableConceptWhy the result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

... component SΣC0..*BackboneElementComponent observations
.... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... code SΣ1..1CodeableConceptType of component observation (code / type)
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.

.... value[x] SΣC0..1Vital Sign Component Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... valueQuantityQuantity
.... dataAbsentReason SC0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.


doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / Code
Observation.statusrequiredObservationStatus
Observation.categorypreferredObservationCategoryCodes
Observation.category:VSCatpreferredObservationCategoryCodes
Observation.codeextensiblePattern: LOINC code 39156-5
Observation.value[x]extensibleVitalSignsUnits
Observation.value[x]:valueQuantityextensibleVitalSignsUnits
Observation.value[x]:valueQuantity.comparatorrequiredQuantityComparator
Observation.dataAbsentReasonextensibleDataAbsentReason
Observation.component.codeextensibleUsCoreVitalSigns
Observation.component.value[x]extensibleVitalSignsUnits
Observation.component.dataAbsentReasonextensibleDataAbsentReason
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Body Mass Index (BMI) Profile
... id Σ0..1idLogical id of this artifact
... meta Σ0..1MetaMetadata about the resource
... implicitRules ?!Σ0..1uriA set of rules under which this content was created
... language 0..1codeLanguage of the resource content
Binding: CommonLanguages (preferred): A human language.

Additional BindingsPurpose
AllLanguagesMax Binding
... text 0..1NarrativeText summary of the resource, for human interpretation
... contained 0..*ResourceContained, inline Resources
... extension 0..*ExtensionAdditional content defined by implementations
... modifierExtension ?!0..*ExtensionExtensions that cannot be ignored
... identifier Σ0..*IdentifierBusiness Identifier for observation
... basedOn Σ0..*Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)Fulfills plan, proposal or order
... partOf Σ0..*Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)Part of referenced event
... status ?!SΣ1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... Slices for category S1..*CodeableConceptClassification of type of observation
Slice: Unordered, Open by value:coding.code, value:coding.system
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


.... category:VSCat S1..1CodeableConceptClassification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... id 0..1stringUnique id for inter-element referencing
..... extension 0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
..... coding SΣ1..*CodingCode defined by a terminology system
...... id 0..1stringUnique id for inter-element referencing
...... extension 0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
...... system SΣ1..1uriIdentity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... version Σ0..1stringVersion of the system - if relevant
...... code SΣ1..1codeSymbol in syntax defined by the system
Fixed Value: vital-signs
...... display Σ0..1stringRepresentation defined by the system
...... userSelected Σ0..1booleanIf this coding was chosen directly by the user
..... text Σ0..1stringPlain text representation of the concept
... code SΣ1..1CodeableConceptCoded Responses from C-CDA Vital Sign Results
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.


Required Pattern: At least the following
.... id0..1idUnique id for inter-element referencing
.... extension0..*ExtensionAdditional content defined by implementations
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... id0..1idUnique id for inter-element referencing
..... extension0..*ExtensionAdditional content defined by implementations
..... system1..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... version0..1stringVersion of the system - if relevant
..... code1..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
..... display0..1stringRepresentation defined by the system
..... userSelected0..1booleanIf this coding was chosen directly by the user
.... text0..1stringPlain text representation of the concept
... subject SΣ1..1Reference(US Core Patient Profile)Who and/or what the observation is about
... focus ΣTU0..*Reference(Resource)What the observation is about, when it is not about the subject of record
... encounter Σ0..1Reference(Encounter)Healthcare event during which this observation is made
... effective[x] SΣC1..1Often just a dateTime for Vital Signs
.... effectiveDateTimedateTime S
.... effectivePeriodPeriod
... issued Σ0..1instantDate/Time this version was made available
... performer Σ0..*Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson)Who is responsible for the observation
... Slices for value[x] SΣC0..1Vital Signs Value
Slice: Unordered, Open by type:$this
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

.... valueQuantityQuantity S
.... valueCodeableConceptCodeableConcept
.... valueStringstring
.... valueBooleanboolean
.... valueIntegerinteger
.... valueRangeRange
.... valueRatioRatio
.... valueSampledDataSampledData
.... valueTimetime
.... valueDateTimedateTime
.... valuePeriodPeriod
.... value[x]:valueQuantity SΣC0..1QuantityVital Signs Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... id 0..1stringUnique id for inter-element referencing
..... extension 0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
..... value SΣ1..1decimalNumerical value (with implicit precision)
..... comparator ?!Σ0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

..... unit SΣ1..1stringUnit representation
..... system SΣC1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
..... code SΣ1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2
... dataAbsentReason SC0..1CodeableConceptWhy the result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

... interpretation 0..*CodeableConceptHigh, low, normal, etc.
Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.


... note 0..*AnnotationComments about the observation
... bodySite 0..1CodeableConceptObserved body part
Binding: SNOMEDCTBodyStructures (example): Codes describing anatomical locations. May include laterality.

... method 0..1CodeableConceptHow it was done
Binding: ObservationMethods (example): Methods for simple observations.

... specimen 0..1Reference(Specimen)Specimen used for this observation
... device 0..1Reference(Device | DeviceMetric)(Measurement) Device
... referenceRange C0..*BackboneElementProvides guide for interpretation
.... id 0..1stringUnique id for inter-element referencing
.... extension 0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... low C0..1SimpleQuantityLow Range, if relevant
.... high C0..1SimpleQuantityHigh Range, if relevant
.... type 0..1CodeableConceptReference range qualifier
Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.

.... appliesTo 0..*CodeableConceptReference range population
Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.


.... age 0..1RangeApplicable age range, if relevant
.... text 0..1stringText based reference range in an observation
... hasMember Σ0..*Reference(QuestionnaireResponse | MolecularSequence | Vital Signs Profile)Used when reporting vital signs panel components
... derivedFrom Σ0..*Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | MolecularSequence | Vital Signs Profile)Related measurements the observation is made from
... component SΣC0..*BackboneElementComponent observations
.... id 0..1stringUnique id for inter-element referencing
.... extension 0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... code SΣ1..1CodeableConceptType of component observation (code / type)
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.

.... value[x] SΣC0..1Vital Sign Component Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... valueQuantityQuantity S
..... valueCodeableConceptCodeableConcept
..... valueStringstring
..... valueBooleanboolean
..... valueIntegerinteger
..... valueRangeRange
..... valueRatioRatio
..... valueSampledDataSampledData
..... valueTimetime
..... valueDateTimedateTime
..... valuePeriodPeriod
.... dataAbsentReason SC0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

.... interpretation 0..*CodeableConceptHigh, low, normal, etc.
Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.


.... referenceRange 0..*See referenceRange (Observation)Provides guide for interpretation of component result

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / Code
Observation.languagepreferredCommonLanguages
Additional Bindings Purpose
AllLanguages Max Binding
Observation.statusrequiredObservationStatus
Observation.categorypreferredObservationCategoryCodes
Observation.category:VSCatpreferredObservationCategoryCodes
Observation.codeextensiblePattern: LOINC code 39156-5
Observation.value[x]extensibleVitalSignsUnits
Observation.value[x]:valueQuantityextensibleVitalSignsUnits
Observation.value[x]:valueQuantity.comparatorrequiredQuantityComparator
Observation.dataAbsentReasonextensibleDataAbsentReason
Observation.interpretationextensibleObservationInterpretationCodes
Observation.bodySiteexampleSNOMEDCTBodyStructures
Observation.methodexampleObservationMethods
Observation.referenceRange.typepreferredObservationReferenceRangeMeaningCodes
Observation.referenceRange.appliesToexampleObservationReferenceRangeAppliesToCodes
Observation.component.codeextensibleUsCoreVitalSigns
Observation.component.value[x]extensibleVitalSignsUnits
Observation.component.dataAbsentReasonextensibleDataAbsentReason
Observation.component.interpretationextensibleObservationInterpretationCodes

This structure is derived from USCoreVitalSignsProfile

Summary

Mandatory: 0 element (4 nested mandatory elements)
Must-Support: 6 elements
Fixed Value: 2 elements

Differential View

This structure is derived from USCoreVitalSignsProfile

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..*USCoreVitalSignsProfileUS Core Body Mass Index (BMI) Profile
... code S1..1CodeableConceptCoded Responses from C-CDA Vital Sign Results
Required Pattern: At least the following
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... system1..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... code1..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
... valueQuantity S0..1QuantityVital Signs Value
.... value S1..1decimalNumerical value (with implicit precision)
.... unit S1..1stringUnit representation
.... system S1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
.... code S1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2

doco Documentation for this format

Key Elements View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Body Mass Index (BMI) Profile
... implicitRules ?!Σ0..1uriA set of rules under which this content was created
... modifierExtension ?!0..*ExtensionExtensions that cannot be ignored
... status ?!SΣ1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... Slices for category S1..*CodeableConceptClassification of type of observation
Slice: Unordered, Open by value:coding.code, value:coding.system
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


.... category:VSCat S1..1CodeableConceptClassification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... coding SΣ1..*CodingCode defined by a terminology system
...... system SΣ1..1uriIdentity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... code SΣ1..1codeSymbol in syntax defined by the system
Fixed Value: vital-signs
... code SΣ1..1CodeableConceptCoded Responses from C-CDA Vital Sign Results
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.


Required Pattern: At least the following
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... system1..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... code1..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
... subject SΣ1..1Reference(US Core Patient Profile)Who and/or what the observation is about
... effective[x] SΣC1..1Often just a dateTime for Vital Signs
.... effectiveDateTimedateTime
... Slices for value[x] SΣC0..1Vital Signs Value
Slice: Unordered, Open by type:$this
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

.... valueQuantityQuantity
.... value[x]:valueQuantity SΣC0..1QuantityVital Signs Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... value SΣ1..1decimalNumerical value (with implicit precision)
..... comparator ?!Σ0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

..... unit SΣ1..1stringUnit representation
..... system SΣC1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
..... code SΣ1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2
... dataAbsentReason SC0..1CodeableConceptWhy the result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

... component SΣC0..*BackboneElementComponent observations
.... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... code SΣ1..1CodeableConceptType of component observation (code / type)
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.

.... value[x] SΣC0..1Vital Sign Component Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... valueQuantityQuantity
.... dataAbsentReason SC0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.


doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / Code
Observation.statusrequiredObservationStatus
Observation.categorypreferredObservationCategoryCodes
Observation.category:VSCatpreferredObservationCategoryCodes
Observation.codeextensiblePattern: LOINC code 39156-5
Observation.value[x]extensibleVitalSignsUnits
Observation.value[x]:valueQuantityextensibleVitalSignsUnits
Observation.value[x]:valueQuantity.comparatorrequiredQuantityComparator
Observation.dataAbsentReasonextensibleDataAbsentReason
Observation.component.codeextensibleUsCoreVitalSigns
Observation.component.value[x]extensibleVitalSignsUnits
Observation.component.dataAbsentReasonextensibleDataAbsentReason

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Body Mass Index (BMI) Profile
... id Σ0..1idLogical id of this artifact
... meta Σ0..1MetaMetadata about the resource
... implicitRules ?!Σ0..1uriA set of rules under which this content was created
... language 0..1codeLanguage of the resource content
Binding: CommonLanguages (preferred): A human language.

Additional BindingsPurpose
AllLanguagesMax Binding
... text 0..1NarrativeText summary of the resource, for human interpretation
... contained 0..*ResourceContained, inline Resources
... extension 0..*ExtensionAdditional content defined by implementations
... modifierExtension ?!0..*ExtensionExtensions that cannot be ignored
... identifier Σ0..*IdentifierBusiness Identifier for observation
... basedOn Σ0..*Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)Fulfills plan, proposal or order
... partOf Σ0..*Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)Part of referenced event
... status ?!SΣ1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... Slices for category S1..*CodeableConceptClassification of type of observation
Slice: Unordered, Open by value:coding.code, value:coding.system
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


.... category:VSCat S1..1CodeableConceptClassification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... id 0..1stringUnique id for inter-element referencing
..... extension 0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
..... coding SΣ1..*CodingCode defined by a terminology system
...... id 0..1stringUnique id for inter-element referencing
...... extension 0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
...... system SΣ1..1uriIdentity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... version Σ0..1stringVersion of the system - if relevant
...... code SΣ1..1codeSymbol in syntax defined by the system
Fixed Value: vital-signs
...... display Σ0..1stringRepresentation defined by the system
...... userSelected Σ0..1booleanIf this coding was chosen directly by the user
..... text Σ0..1stringPlain text representation of the concept
... code SΣ1..1CodeableConceptCoded Responses from C-CDA Vital Sign Results
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.


Required Pattern: At least the following
.... id0..1idUnique id for inter-element referencing
.... extension0..*ExtensionAdditional content defined by implementations
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... id0..1idUnique id for inter-element referencing
..... extension0..*ExtensionAdditional content defined by implementations
..... system1..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... version0..1stringVersion of the system - if relevant
..... code1..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
..... display0..1stringRepresentation defined by the system
..... userSelected0..1booleanIf this coding was chosen directly by the user
.... text0..1stringPlain text representation of the concept
... subject SΣ1..1Reference(US Core Patient Profile)Who and/or what the observation is about
... focus ΣTU0..*Reference(Resource)What the observation is about, when it is not about the subject of record
... encounter Σ0..1Reference(Encounter)Healthcare event during which this observation is made
... effective[x] SΣC1..1Often just a dateTime for Vital Signs
.... effectiveDateTimedateTime S
.... effectivePeriodPeriod
... issued Σ0..1instantDate/Time this version was made available
... performer Σ0..*Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson)Who is responsible for the observation
... Slices for value[x] SΣC0..1Vital Signs Value
Slice: Unordered, Open by type:$this
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

.... valueQuantityQuantity S
.... valueCodeableConceptCodeableConcept
.... valueStringstring
.... valueBooleanboolean
.... valueIntegerinteger
.... valueRangeRange
.... valueRatioRatio
.... valueSampledDataSampledData
.... valueTimetime
.... valueDateTimedateTime
.... valuePeriodPeriod
.... value[x]:valueQuantity SΣC0..1QuantityVital Signs Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... id 0..1stringUnique id for inter-element referencing
..... extension 0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
..... value SΣ1..1decimalNumerical value (with implicit precision)
..... comparator ?!Σ0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

..... unit SΣ1..1stringUnit representation
..... system SΣC1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
..... code SΣ1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2
... dataAbsentReason SC0..1CodeableConceptWhy the result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

... interpretation 0..*CodeableConceptHigh, low, normal, etc.
Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.


... note 0..*AnnotationComments about the observation
... bodySite 0..1CodeableConceptObserved body part
Binding: SNOMEDCTBodyStructures (example): Codes describing anatomical locations. May include laterality.

... method 0..1CodeableConceptHow it was done
Binding: ObservationMethods (example): Methods for simple observations.

... specimen 0..1Reference(Specimen)Specimen used for this observation
... device 0..1Reference(Device | DeviceMetric)(Measurement) Device
... referenceRange C0..*BackboneElementProvides guide for interpretation
.... id 0..1stringUnique id for inter-element referencing
.... extension 0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... low C0..1SimpleQuantityLow Range, if relevant
.... high C0..1SimpleQuantityHigh Range, if relevant
.... type 0..1CodeableConceptReference range qualifier
Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.

.... appliesTo 0..*CodeableConceptReference range population
Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.


.... age 0..1RangeApplicable age range, if relevant
.... text 0..1stringText based reference range in an observation
... hasMember Σ0..*Reference(QuestionnaireResponse | MolecularSequence | Vital Signs Profile)Used when reporting vital signs panel components
... derivedFrom Σ0..*Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | MolecularSequence | Vital Signs Profile)Related measurements the observation is made from
... component SΣC0..*BackboneElementComponent observations
.... id 0..1stringUnique id for inter-element referencing
.... extension 0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... code SΣ1..1CodeableConceptType of component observation (code / type)
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.

.... value[x] SΣC0..1Vital Sign Component Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

..... valueQuantityQuantity S
..... valueCodeableConceptCodeableConcept
..... valueStringstring
..... valueBooleanboolean
..... valueIntegerinteger
..... valueRangeRange
..... valueRatioRatio
..... valueSampledDataSampledData
..... valueTimetime
..... valueDateTimedateTime
..... valuePeriodPeriod
.... dataAbsentReason SC0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

.... interpretation 0..*CodeableConceptHigh, low, normal, etc.
Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.


.... referenceRange 0..*See referenceRange (Observation)Provides guide for interpretation of component result

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / Code
Observation.languagepreferredCommonLanguages
Additional Bindings Purpose
AllLanguages Max Binding
Observation.statusrequiredObservationStatus
Observation.categorypreferredObservationCategoryCodes
Observation.category:VSCatpreferredObservationCategoryCodes
Observation.codeextensiblePattern: LOINC code 39156-5
Observation.value[x]extensibleVitalSignsUnits
Observation.value[x]:valueQuantityextensibleVitalSignsUnits
Observation.value[x]:valueQuantity.comparatorrequiredQuantityComparator
Observation.dataAbsentReasonextensibleDataAbsentReason
Observation.interpretationextensibleObservationInterpretationCodes
Observation.bodySiteexampleSNOMEDCTBodyStructures
Observation.methodexampleObservationMethods
Observation.referenceRange.typepreferredObservationReferenceRangeMeaningCodes
Observation.referenceRange.appliesToexampleObservationReferenceRangeAppliesToCodes
Observation.component.codeextensibleUsCoreVitalSigns
Observation.component.value[x]extensibleVitalSignsUnits
Observation.component.dataAbsentReasonextensibleDataAbsentReason
Observation.component.interpretationextensibleObservationInterpretationCodes

This structure is derived from USCoreVitalSignsProfile

Summary

Mandatory: 0 element (4 nested mandatory elements)
Must-Support: 6 elements
Fixed Value: 2 elements

 

Other representations of profile: CSV, Excel, Schematron

Notes:

Quick Start

Below is an overview of the required Server RESTful FHIR interactions for this profile - for example, search and read operations - when supporting the US Core interactions to access this profile’s information (Profile Support + Interaction Support). Note that systems that support only US Core Profiles (Profile Only Support) are not required to support these interactions. See the US Core Server CapabilityStatement for a complete list of supported RESTful interactions for this IG.

  • The syntax used to describe the interactions is described here.
  • See the General Requirements section for additional rules and expectations when a server requires status parameters.
  • See the General Guidance section for additional guidance on searching for multiple patients.

Mandatory Search Parameters:

The following search parameters and search parameter combinations SHALL be supported:

  1. SHALL support searching using the combination of the patient and category search parameters:

    GET [base]/Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|vital-signs

    Example:

    1. GET [base]/Observation?patient=1134281&category=http://terminology.hl7.org/CodeSystem/observation-category|vital-signs

    Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and a category code = vital-signs (how to search by reference and how to search by token)

  2. SHALL support searching using the combination of the patient and code search parameters:
    • including optional support for OR search on code (e.g.code={system|}[code],{system|}[code],...)

    GET [base]/Observation?patient={Type/}[id]&code={system|}[code]{,{system|}[code],...}

    Example:

    1. GET [base]/Observation?patient=1186747&code=http://loinc.org|8867-4,http://loinc.org|9279-1,http://loinc.org|85354-9

    Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and observation code(s). SHOULD support search by multiple codes. The Observation code parameter searches `Observation.code only. (how to search by reference and how to search by token)

  3. SHALL support searching using the combination of the patient and category and date search parameters:
    • including support for these date comparators: gt,lt,ge,le
    • including optional support for AND search on date (e.g.date=[date]&date=[date]]&...)

    GET [base]/Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|vital-signs&date={gt|lt|ge|le}[date]{&date={gt|lt|ge|le}[date]&...}

    Example:

    1. GET [base]/Observation?patient=1134281&category=http://terminology.hl7.org/CodeSystem/observation-category|vital-signs&date=ge2020-01-01T00:00:00Z

    Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and date and a category code = vital-signs (how to search by reference and how to search by token and how to search by date)

Optional Search Parameters:

The following search parameter combinations SHOULD be supported:

  1. SHOULD support searching using the combination of the patient and category and status search parameters:
    • including support for OR search on status (e.g.status={system|}[code],{system|}[code],...)

    GET [base]/Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|vital-signs&status={system|}[code]{,{system|}[code],...}

    Example:

    1. GET [base]/Observation?patient=1134281&category=http://terminology.hl7.org/CodeSystem/observation-category|vital-signs&status=final

    Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and category and status (how to search by reference and how to search by token)

  2. SHOULD support searching using the combination of the patient and code and date search parameters:
    • including optional support for OR search on code (e.g.code={system|}[code],{system|}[code],...)
    • including support for these date comparators: gt,lt,ge,le
    • including optional support for AND search on date (e.g.date=[date]&date=[date]]&...)

    GET [base]/Observation?patient={Type/}[id]&code={system|}[code]{,{system|}[code],...}&date={gt|lt|ge|le}[date]{&date={gt|lt|ge|le}[date]&...}

    Example:

    1. GET [base]/Observation?patient=1186747&code=http://loinc.org|8867-4,http://loinc.org|9279-1,http://loinc.org|85354-9&date=ge2020-01-01T00:00:00Z

    Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and date and report code(s). SHOULD support search by multiple codes. (how to search by reference and how to search by token and how to search by date)