US Core Implementation Guide
7.0.0-ballot - STU6 United States of America flag

US Core Implementation Guide, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 7.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/US-Core/ and changes regularly. See the Directory of published versions

Resource Profile: US Core Blood Pressure Profile

Official URL: http://hl7.org/fhir/us/core/StructureDefinition/us-core-blood-pressure Version: 7.0.0-ballot
Standards status: Trial-use Maturity Level: 3 Computable Name: USCoreBloodPressureProfile

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 diastolic and systolic blood pressure observations with standard LOINC codes and UCUM units of measure. It is based on the US Core Vital Signs Profile and identifies which additional core elements, extensions, vocabularies, and value sets SHALL be present and constrains the way the elements are used when using the 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 blood pressure observations belonging to a patient
  • Record or update blood pressure observations belonging to a patient

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 systolic and diastolic blood pressure panel
  3. a fixed component code for systolic blood pressure
  4. a fixed component code for diastolic blood pressure

Each Observation Must Support:

  1. a result value for systolic blood pressure
  2. a result value for diastolic blood pressure

Profile Specific Implementation Guidance:

  • Note that this profile also conforms to the base FHIR Vital Signs Profile.
  • 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.

    a 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.
  • Implementers may use this profile as a base for other vital signs in addition to those in this guide.
  • Because the blood pressure values are communicated in the mandatory systolic and diastolic components:
    • the Observation.value[x] element SHOULD be omitted
    • an Observation without a systolic or diastolic result value, SHALL include a reason why the data is absent in Observation.component.dataAbsentReason
    • all server systems - including those that never provide a component observation without a value - SHALL support Observation.component.dataAbsentReason for the components.

Usage:

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 Blood Pressure Profile
... code S1..1CodeableConceptBlood Pressure
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: 85354-9
... Slices for component S2..*BackboneElementComponent observations
Slice: Unordered, Open by pattern:code
.... component:systolic S1..1BackboneElementSystolic Blood Pressure
..... code S1..1CodeableConceptSystolic Blood Pressure Code
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: 8480-6
..... valueQuantity S0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
.... component:diastolic S1..1BackboneElementDiastolic Blood Pressure
..... code S1..1CodeableConceptDiastolic Blood Pressure Code
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: 8462-4
..... valueQuantity S0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Blood Pressure 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..1CodeableConceptBlood Pressure
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: 85354-9
... 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
... value[x] SΣC0..1Vital Signs Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

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

... Slices for component SΣC2..*BackboneElementComponent observations
Slice: Unordered, Open by pattern:code
.... component:All Slices Content/Rules for all slices
..... 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.

.... component:systolic SΣC1..1BackboneElementSystolic Blood Pressure
..... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
..... code SΣ1..1CodeableConceptSystolic Blood Pressure Code
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: 8480-6
..... value[x] SΣC0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
..... dataAbsentReason SC0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

.... component:diastolic SΣC1..1BackboneElementDiastolic Blood Pressure
..... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
..... code SΣ1..1CodeableConceptDiastolic Blood Pressure Code
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: 8462-4
..... value[x] SΣC0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
..... 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 85354-9
Observation.value[x]extensibleVitalSignsUnits
Observation.dataAbsentReasonextensibleDataAbsentReason
Observation.component.codeextensibleUsCoreVitalSigns
Observation.component.value[x]extensibleVitalSignsUnits
Observation.component.dataAbsentReasonextensibleDataAbsentReason
Observation.component:systolic.codeextensiblePattern: LOINC code 8480-6
Observation.component:systolic.value[x]extensibleVitalSignsUnits
Observation.component:systolic.value[x].comparatorrequiredQuantityComparator
Observation.component:systolic.dataAbsentReasonextensibleDataAbsentReason
Observation.component:diastolic.codeextensiblePattern: LOINC code 8462-4
Observation.component:diastolic.value[x]extensibleVitalSignsUnits
Observation.component:diastolic.value[x].comparatorrequiredQuantityComparator
Observation.component:diastolic.dataAbsentReasonextensibleDataAbsentReason

Constraints

IdGradePath(s)DetailsRequirements
dom-2errorObservationIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3errorObservationIf 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-4errorObservationIf 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-5errorObservationIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6best practiceObservationA resource should have narrative for robust management
: text.`div`.exists()
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
obs-6errorObservationdataAbsentReason SHALL only be present if Observation.value[x] is not present
: dataAbsentReason.empty() or value.empty()
obs-7errorObservationIf 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()
vs-1errorObservation.effective[x]if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day
: $this is dateTime implies $this.toString().length() >= 10
vs-2errorObservationIf 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())
vs-3errorObservation.component, Observation.component:systolic, Observation.component:diastolicIf there is no a value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Blood Pressure 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..1CodeableConceptBlood Pressure
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..1stringUnique id for inter-element referencing
.... extension0..*ExtensionAdditional content defined by implementations
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... id0..1stringUnique 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: 85354-9
..... 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 Σ0..*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
... value[x] SΣC0..1Vital Signs 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 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
... Slices for component SΣC2..*BackboneElementComponent observations
Slice: Unordered, Open by pattern:code
.... component:All Slices Content/Rules for all slices
..... 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
.... component:systolic SΣC1..1BackboneElementSystolic Blood Pressure
..... 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..1CodeableConceptSystolic Blood Pressure Code
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..1stringUnique id for inter-element referencing
...... extension0..*ExtensionAdditional content defined by implementations
...... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
....... id0..1stringUnique 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: 8480-6
....... display0..1stringRepresentation defined by the system
....... userSelected0..1booleanIf this coding was chosen directly by the user
...... text0..1stringPlain text representation of the concept
..... value[x] SΣC0..1Quantity SVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
..... 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
.... component:diastolic SΣC1..1BackboneElementDiastolic Blood Pressure
..... 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..1CodeableConceptDiastolic Blood Pressure Code
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..1stringUnique id for inter-element referencing
...... extension0..*ExtensionAdditional content defined by implementations
...... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
....... id0..1stringUnique 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: 8462-4
....... display0..1stringRepresentation defined by the system
....... userSelected0..1booleanIf this coding was chosen directly by the user
...... text0..1stringPlain text representation of the concept
..... value[x] SΣC0..1Quantity SVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
..... 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 85354-9
Observation.value[x]extensibleVitalSignsUnits
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
Observation.component:systolic.codeextensiblePattern: LOINC code 8480-6
Observation.component:systolic.value[x]extensibleVitalSignsUnits
Observation.component:systolic.value[x].comparatorrequiredQuantityComparator
Observation.component:systolic.dataAbsentReasonextensibleDataAbsentReason
Observation.component:systolic.interpretationextensibleObservationInterpretationCodes
Observation.component:diastolic.codeextensiblePattern: LOINC code 8462-4
Observation.component:diastolic.value[x]extensibleVitalSignsUnits
Observation.component:diastolic.value[x].comparatorrequiredQuantityComparator
Observation.component:diastolic.dataAbsentReasonextensibleDataAbsentReason
Observation.component:diastolic.interpretationextensibleObservationInterpretationCodes

Constraints

IdGradePath(s)DetailsRequirements
dom-2errorObservationIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3errorObservationIf 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-4errorObservationIf 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-5errorObservationIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6best practiceObservationA resource should have narrative for robust management
: text.`div`.exists()
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
obs-3errorObservation.referenceRangeMust have at least a low or a high or text
: low.exists() or high.exists() or text.exists()
obs-6errorObservationdataAbsentReason SHALL only be present if Observation.value[x] is not present
: dataAbsentReason.empty() or value.empty()
obs-7errorObservationIf 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()
vs-1errorObservation.effective[x]if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day
: $this is dateTime implies $this.toString().length() >= 10
vs-2errorObservationIf 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())
vs-3errorObservation.component, Observation.component:systolic, Observation.component:diastolicIf there is no a value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()

This structure is derived from USCoreVitalSignsProfile

Summary

Mandatory: 4 elements (8 nested mandatory elements)
Must-Support: 16 elements
Fixed Value: 4 elements

Slices

This structure defines the following Slices:

  • The element Observation.component is sliced based on the value of pattern:code

Maturity: 3

Differential View

This structure is derived from USCoreVitalSignsProfile

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..*USCoreVitalSignsProfileUS Core Blood Pressure Profile
... code S1..1CodeableConceptBlood Pressure
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: 85354-9
... Slices for component S2..*BackboneElementComponent observations
Slice: Unordered, Open by pattern:code
.... component:systolic S1..1BackboneElementSystolic Blood Pressure
..... code S1..1CodeableConceptSystolic Blood Pressure Code
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: 8480-6
..... valueQuantity S0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
.... component:diastolic S1..1BackboneElementDiastolic Blood Pressure
..... code S1..1CodeableConceptDiastolic Blood Pressure Code
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: 8462-4
..... valueQuantity S0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]

doco Documentation for this format

Key Elements View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Blood Pressure 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..1CodeableConceptBlood Pressure
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: 85354-9
... 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
... value[x] SΣC0..1Vital Signs Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.

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

... Slices for component SΣC2..*BackboneElementComponent observations
Slice: Unordered, Open by pattern:code
.... component:All Slices Content/Rules for all slices
..... 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.

.... component:systolic SΣC1..1BackboneElementSystolic Blood Pressure
..... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
..... code SΣ1..1CodeableConceptSystolic Blood Pressure Code
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: 8480-6
..... value[x] SΣC0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
..... dataAbsentReason SC0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

.... component:diastolic SΣC1..1BackboneElementDiastolic Blood Pressure
..... modifierExtension ?!Σ0..*ExtensionExtensions that cannot be ignored even if unrecognized
..... code SΣ1..1CodeableConceptDiastolic Blood Pressure Code
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: 8462-4
..... value[x] SΣC0..1QuantityVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
..... 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 85354-9
Observation.value[x]extensibleVitalSignsUnits
Observation.dataAbsentReasonextensibleDataAbsentReason
Observation.component.codeextensibleUsCoreVitalSigns
Observation.component.value[x]extensibleVitalSignsUnits
Observation.component.dataAbsentReasonextensibleDataAbsentReason
Observation.component:systolic.codeextensiblePattern: LOINC code 8480-6
Observation.component:systolic.value[x]extensibleVitalSignsUnits
Observation.component:systolic.value[x].comparatorrequiredQuantityComparator
Observation.component:systolic.dataAbsentReasonextensibleDataAbsentReason
Observation.component:diastolic.codeextensiblePattern: LOINC code 8462-4
Observation.component:diastolic.value[x]extensibleVitalSignsUnits
Observation.component:diastolic.value[x].comparatorrequiredQuantityComparator
Observation.component:diastolic.dataAbsentReasonextensibleDataAbsentReason

Constraints

IdGradePath(s)DetailsRequirements
dom-2errorObservationIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3errorObservationIf 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-4errorObservationIf 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-5errorObservationIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6best practiceObservationA resource should have narrative for robust management
: text.`div`.exists()
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
obs-6errorObservationdataAbsentReason SHALL only be present if Observation.value[x] is not present
: dataAbsentReason.empty() or value.empty()
obs-7errorObservationIf 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()
vs-1errorObservation.effective[x]if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day
: $this is dateTime implies $this.toString().length() >= 10
vs-2errorObservationIf 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())
vs-3errorObservation.component, Observation.component:systolic, Observation.component:diastolicIf there is no a value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C0..*USCoreVitalSignsProfileUS Core Blood Pressure 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..1CodeableConceptBlood Pressure
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..1stringUnique id for inter-element referencing
.... extension0..*ExtensionAdditional content defined by implementations
.... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
..... id0..1stringUnique 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: 85354-9
..... 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 Σ0..*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
... value[x] SΣC0..1Vital Signs 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 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
... Slices for component SΣC2..*BackboneElementComponent observations
Slice: Unordered, Open by pattern:code
.... component:All Slices Content/Rules for all slices
..... 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
.... component:systolic SΣC1..1BackboneElementSystolic Blood Pressure
..... 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..1CodeableConceptSystolic Blood Pressure Code
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..1stringUnique id for inter-element referencing
...... extension0..*ExtensionAdditional content defined by implementations
...... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
....... id0..1stringUnique 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: 8480-6
....... display0..1stringRepresentation defined by the system
....... userSelected0..1booleanIf this coding was chosen directly by the user
...... text0..1stringPlain text representation of the concept
..... value[x] SΣC0..1Quantity SVital Sign Component 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 form of the unit
Fixed Value: mm[Hg]
..... 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
.... component:diastolic SΣC1..1BackboneElementDiastolic Blood Pressure
..... 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..1CodeableConceptDiastolic Blood Pressure Code
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..1stringUnique id for inter-element referencing
...... extension0..*ExtensionAdditional content defined by implementations
...... coding1..*CodingCode defined by a terminology system
Fixed Value: (complex)
....... id0..1stringUnique id for inter-element referencing
....... extension0..*ExtensionAdditional content defined by implementations
....... system1..1uri