US Core Implementation Guide
7.0.0 - STU7 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 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 Average Blood Pressure Profile

Official URL: http://hl7.org/fhir/us/core/StructureDefinition/us-core-average-blood-pressure Version: 7.0.0
Standards status: Trial-use Maturity Level: 3 Computable Name: USCoreAverageBloodPressureProfile
Other Identifiers: OID:2.16.840.1.113883.4.642.40.2.42.4

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

The US Core Average Blood Pressure Profile inherits from the Observation resource; refer to it for scope and usage definitions. This profile sets minimum expectations for recording, searching, and fetching average diastolic and systolic blood pressure observations with standard LOINC codes and UCUM units of measure. It specifies which core elements, extensions, vocabularies, and value sets SHALL be present in the resource and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.

Example Usage Scenarios:

The following are example usage scenarios for this profile:

  • Query for average blood pressure observations belonging to a patient
  • Record or update average blood pressure observations belonging to a patient

Mandatory and Must Support Data Elements

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.

Each Observation Must Have:

  1. a status
  2. a category code of “vital-signs”
  3. a fixed code for average systolic and diastolic blood pressure panel
  4. a fixed component code for average systolic blood pressure
  5. a fixed component code for average diastolic blood pressure
  6. a patient

Each Observation Must Support:

  1. clinically relevant time-period for the average of blood pressure readings
  2. a result value for the average systolic blood pressure
  3. a result value for the average diastolic blood pressure
  4. a reason if the value is absent*

*see guidance below

Profile Specific Implementation Guidance:

  • The category “vital-signs” aligns with the USCDI Data Class and Elements and provides a convenient and consistent grouping of the clinical concepts. Implementers can group them differently based on their clinical needs.
  • 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

    a code system value SHOULD be supplied for each additional code.

  • *Because the blood pressure values are communicated in the mandatory systolic and diastolic components:
    • the Observation.value[x] element SHALL 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.
  • This Profile is not dependent on any specific protocol. Information about the protocol used SHOULD be supplied in either:
  • Information about the number of measurements used to determine the average SHOULD be supplied as an Observation.component using the SNOMED CT code “246432004 Number of occurrences (qualifier value)”. The example shows how this component can be used.
  • The observation MAY use an extension defined by other profiles such as Vital Signs with Qualifying Elements: Average Blood Pressure Profile.

Usage:

Formal Views of Profile Content

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

This structure is derived from Observation

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..* Observation US Core Average Blood Pressure Profile
... status S 1..1 code registered | preliminary | final | amended +
... Slices for category S 1..* CodeableConcept Classification of type of observation
Slice: Unordered, Open by value:coding.code, value:coding.system
.... category:VSCat S 1..1 CodeableConcept Classification of type of observation
..... coding S 1..* Coding Code defined by a terminology system
...... system 1..1 uri Identity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... code 1..1 code Symbol in syntax defined by the system
Fixed Value: vital-signs
... code S 1..1 CodeableConcept Blood Pressure
Required Pattern: At least the following
.... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
..... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
..... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96607-7
... subject S 0..1 Reference(US Core Patient Profile) Who and/or what the observation is about
... effective[x] S 1..1 clinically relevant time-period for the average of blood pressure (BP) readings
.... effectiveDateTime dateTime
.... effectivePeriod Period S
... value[x] 0..0
... Slices for component SC 2..* BackboneElement Average systolic and diastolic blood pressure and other qualifiers.
Slice: Unordered, Open by pattern:code
us-core-26: If there is no value a data absent reason must be present
.... component:All Slices Content/Rules for all slices
..... value[x] S 0..1 Vital Sign Component Value
...... valueQuantity Quantity S
...... valueCodeableConcept CodeableConcept
...... valueString string
...... valueBoolean boolean
...... valueInteger integer
...... valueRange Range
...... valueRatio Ratio
...... valueSampledData SampledData
...... valueTime time
...... valueDateTime dateTime
...... valuePeriod Period
..... dataAbsentReason SC 0..1 CodeableConcept Why the component result is missing
.... component:systolic S 1..1 BackboneElement Systolic Average Blood Pressure
..... code S 1..1 CodeableConcept Systolic Average Blood Pressure Code
Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96608-5
..... valueQuantity SC 0..1 Quantity Systolic Average Blood Pressure Value
...... value 1..1 decimal Numerical value (with implicit precision)
...... unit 1..1 string Unit representation
...... system 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code 1..1 code Coded form of the unit
Fixed Value: mm[Hg]
.... component:diastolic S 1..1 BackboneElement Diastolic Average Blood Pressure
..... code S 1..1 CodeableConcept Diastolic Average Blood Pressure Code
Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96609-3
..... valueQuantity SC 0..1 Quantity Diastolic Average Blood Pressure Value
...... value 1..1 decimal Numerical value (with implicit precision)
...... unit 1..1 string Unit representation
...... system 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code 1..1 code Coded form of the unit
Fixed Value: mm[Hg]

doco Documentation for this format

Constraints

IdGradePath(s)DetailsRequirements
us-core-26errorObservation.componentIf there is no value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C 0..* Observation US Core Average Blood Pressure Profile
obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present
obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... status ?!SΣ 1..1 code registered | preliminary | final | amended +
Binding: ObservationStatus (required): Codes providing the status of an observation.

... Slices for category S 1..* CodeableConcept Classification 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 S 1..1 CodeableConcept Classification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... coding SΣ 1..* Coding Code defined by a terminology system
...... system Σ 1..1 uri Identity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... code Σ 1..1 code Symbol in syntax defined by the system
Fixed Value: vital-signs
... code SΣ 1..1 CodeableConcept Blood Pressure
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
.... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
..... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
..... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96607-7
... subject SΣ 0..1 Reference(US Core Patient Profile) Who and/or what the observation is about
... effective[x] SΣ 1..1 clinically relevant time-period for the average of blood pressure (BP) readings
.... effectivePeriod Period
... Slices for component SΣC 2..* BackboneElement Average systolic and diastolic blood pressure and other qualifiers.
Slice: Unordered, Open by pattern:code
us-core-26: If there is no value a data absent reason must be present
.... component:All Slices Content/Rules for all slices
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code Σ 1..1 CodeableConcept Type of component observation (code / type)
Binding: LOINCCodes (example): Codes identifying names of simple observations.

..... value[x] SΣ 0..1 Vital Sign Component Value
...... valueQuantity Quantity
..... dataAbsentReason SC 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

.... component:systolic SΣ 1..1 BackboneElement Systolic Average Blood Pressure
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Systolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96608-5
..... value[x] SΣC 0..1 Quantity Systolic Average Blood Pressure Value
...... value Σ 1..1 decimal Numerical value (with implicit precision)
...... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

...... unit Σ 1..1 string Unit representation
...... system ΣC 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code Σ 1..1 code Coded form of the unit
Fixed Value: mm[Hg]
.... component:diastolic SΣ 1..1 BackboneElement Diastolic Average Blood Pressure
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Diastolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96609-3
..... value[x] SΣC 0..1 Quantity Diastolic Average Blood Pressure Value
...... value Σ 1..1 decimal Numerical value (with implicit precision)
...... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

...... unit Σ 1..1 string Unit representation
...... system ΣC 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code Σ 1..1 code Coded form of the unit
Fixed Value: mm[Hg]

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Observation.statusrequiredObservationStatus
http://hl7.org/fhir/ValueSet/observation-status|4.0.1
from the FHIR Standard
Observation.categorypreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.category:VSCatpreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.codeexamplePattern: LOINC code 96607-7
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component.codeexampleLOINCCodes (a valid code from LOINC)
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard
Observation.component:systolic.codeexamplePattern: LOINC code 96608-5
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component:systolic.value[x].comparatorrequiredQuantityComparator
http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
from the FHIR Standard
Observation.component:diastolic.codeexamplePattern: LOINC code 96609-3
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component:diastolic.value[x].comparatorrequiredQuantityComparator
http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
us-core-26errorObservation.componentIf there is no value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C 0..* Observation US Core Average Blood Pressure Profile
obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present
obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present
... id Σ 0..1 id Logical id of this artifact
... meta Σ 0..1 Meta Metadata about the resource
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... language 0..1 code Language of the resource content
Binding: CommonLanguages (preferred): A human language.

Additional BindingsPurpose
AllLanguages Max Binding
... text 0..1 Narrative Text summary of the resource, for human interpretation
... contained 0..* Resource Contained, inline Resources
... extension 0..* Extension Additional content defined by implementations
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... identifier Σ 0..* Identifier Business Identifier for observation
... basedOn Σ 0..* Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest) Fulfills plan, proposal or order
... partOf Σ 0..* Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy) Part of referenced event
... status ?!SΣ 1..1 code registered | preliminary | final | amended +
Binding: ObservationStatus (required): Codes providing the status of an observation.

... Slices for category S 1..* CodeableConcept Classification 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 S 1..1 CodeableConcept Classification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... coding SΣ 1..* Coding Code defined by a terminology system
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
...... system Σ 1..1 uri Identity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... version Σ 0..1 string Version of the system - if relevant
...... code Σ 1..1 code Symbol in syntax defined by the system
Fixed Value: vital-signs
...... display Σ 0..1 string Representation defined by the system
...... userSelected Σ 0..1 boolean If this coding was chosen directly by the user
..... text Σ 0..1 string Plain text representation of the concept
... code SΣ 1..1 CodeableConcept Blood Pressure
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
.... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
..... version 0..1 string Version of the system - if relevant
..... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96607-7
..... display 0..1 string Representation defined by the system
..... userSelected 0..1 boolean If this coding was chosen directly by the user
.... text 0..1 string Plain text representation of the concept
... subject SΣ 0..1 Reference(US Core Patient Profile) Who and/or what the observation is about
... focus Σ 0..* Reference(Resource) What the observation is about, when it is not about the subject of record
... encounter Σ 0..1 Reference(Encounter) Healthcare event during which this observation is made
... effective[x] SΣ 1..1 clinically relevant time-period for the average of blood pressure (BP) readings
.... effectiveDateTime dateTime
.... effectivePeriod Period S
... issued Σ 0..1 instant Date/Time this version was made available
... performer Σ 0..* Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson) Who is responsible for the observation
... dataAbsentReason C 0..1 CodeableConcept Why the result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

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


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

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

... specimen 0..1 Reference(Specimen) Specimen used for this observation
... device 0..1 Reference(Device | DeviceMetric) (Measurement) Device
... referenceRange C 0..* BackboneElement Provides guide for interpretation
obs-3: Must have at least a low or a high or text
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... low C 0..1 SimpleQuantity Low Range, if relevant
.... high C 0..1 SimpleQuantity High Range, if relevant
.... type 0..1 CodeableConcept Reference range qualifier
Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.

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


.... age 0..1 Range Applicable age range, if relevant
.... text 0..1 string Text based reference range in an observation
... hasMember Σ 0..* Reference(Observation | QuestionnaireResponse | MolecularSequence) Related resource that belongs to the Observation group
... derivedFrom Σ 0..* Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence) Related measurements the observation is made from
... Slices for component SΣC 2..* BackboneElement Average systolic and diastolic blood pressure and other qualifiers.
Slice: Unordered, Open by pattern:code
us-core-26: If there is no value a data absent reason must be present
.... component:All Slices Content/Rules for all slices
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code Σ 1..1 CodeableConcept Type of component observation (code / type)
Binding: LOINCCodes (example): Codes identifying names of simple observations.

..... value[x] SΣ 0..1 Vital Sign Component Value
...... valueQuantity Quantity S
...... valueCodeableConcept CodeableConcept
...... valueString string
...... valueBoolean boolean
...... valueInteger integer
...... valueRange Range
...... valueRatio Ratio
...... valueSampledData SampledData
...... valueTime time
...... valueDateTime dateTime
...... valuePeriod Period
..... dataAbsentReason SC 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

..... interpretation 0..* CodeableConcept High, 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 SΣ 1..1 BackboneElement Systolic Average Blood Pressure
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Systolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... id 0..1 string Unique id for inter-element referencing
....... extension 0..* Extension Additional content defined by implementations
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... version 0..1 string Version of the system - if relevant
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96608-5
....... display 0..1 string Representation defined by the system
....... userSelected 0..1 boolean If this coding was chosen directly by the user
...... text 0..1 string Plain text representation of the concept
..... value[x] SΣC 0..1 Quantity Systolic Average Blood Pressure Value
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
...... value Σ 1..1 decimal Numerical value (with implicit precision)
...... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

...... unit Σ 1..1 string Unit representation
...... system ΣC 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code Σ 1..1 code Coded form of the unit
Fixed Value: mm[Hg]
..... dataAbsentReason C 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

..... interpretation 0..* CodeableConcept High, 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 SΣ 1..1 BackboneElement Diastolic Average Blood Pressure
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Diastolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... id 0..1 string Unique id for inter-element referencing
....... extension 0..* Extension Additional content defined by implementations
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... version 0..1 string Version of the system - if relevant
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96609-3
....... display 0..1 string Representation defined by the system
....... userSelected 0..1 boolean If this coding was chosen directly by the user
...... text 0..1 string Plain text representation of the concept
..... value[x] SΣC 0..1 Quantity Diastolic Average Blood Pressure Value
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
...... value Σ 1..1 decimal Numerical value (with implicit precision)
...... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

...... unit Σ 1..1 string Unit representation
...... system ΣC 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code Σ 1..1 code Coded form of the unit
Fixed Value: mm[Hg]
..... dataAbsentReason C 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

..... interpretation 0..* CodeableConcept High, 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 / CodeURI
Observation.languagepreferredCommonLanguages
Additional Bindings Purpose
AllLanguages Max Binding
http://hl7.org/fhir/ValueSet/languages
from the FHIR Standard
Observation.statusrequiredObservationStatus
http://hl7.org/fhir/ValueSet/observation-status|4.0.1
from the FHIR Standard
Observation.categorypreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.category:VSCatpreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.codeexamplePattern: LOINC code 96607-7
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard
Observation.interpretationextensibleObservationInterpretationCodes
http://hl7.org/fhir/ValueSet/observation-interpretation
from the FHIR Standard
Observation.bodySiteexampleSNOMEDCTBodyStructures
http://hl7.org/fhir/ValueSet/body-site
from the FHIR Standard
Observation.methodexampleObservationMethods
http://hl7.org/fhir/ValueSet/observation-methods
from the FHIR Standard
Observation.referenceRange.typepreferredObservationReferenceRangeMeaningCodes
http://hl7.org/fhir/ValueSet/referencerange-meaning
from the FHIR Standard
Observation.referenceRange.appliesToexampleObservationReferenceRangeAppliesToCodes
http://hl7.org/fhir/ValueSet/referencerange-appliesto
from the FHIR Standard
Observation.component.codeexampleLOINCCodes (a valid code from LOINC)
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard
Observation.component.interpretationextensibleObservationInterpretationCodes
http://hl7.org/fhir/ValueSet/observation-interpretation
from the FHIR Standard
Observation.component:systolic.codeexamplePattern: LOINC code 96608-5
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component:systolic.value[x].comparatorrequiredQuantityComparator
http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
from the FHIR Standard
Observation.component:systolic.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard
Observation.component:systolic.interpretationextensibleObservationInterpretationCodes
http://hl7.org/fhir/ValueSet/observation-interpretation
from the FHIR Standard
Observation.component:diastolic.codeexamplePattern: LOINC code 96609-3
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component:diastolic.value[x].comparatorrequiredQuantityComparator
http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
from the FHIR Standard
Observation.component:diastolic.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard
Observation.component:diastolic.interpretationextensibleObservationInterpretationCodes
http://hl7.org/fhir/ValueSet/observation-interpretation
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
us-core-26errorObservation.componentIf there is no value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()

This structure is derived from Observation

Summary

Mandatory: 10 elements(8 nested mandatory elements)
Must-Support: 16 elements
Fixed: 6 elements
Prohibited: 1 element

Structures

This structure refers to these other structures:

Slices

This structure defines the following Slices:

  • The element 2 is sliced based on the values of Observation.category
  • The element 1 is sliced based on the value of Observation.component

Maturity: 3

Differential View

This structure is derived from Observation

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..* Observation US Core Average Blood Pressure Profile
... status S 1..1 code registered | preliminary | final | amended +
... Slices for category S 1..* CodeableConcept Classification of type of observation
Slice: Unordered, Open by value:coding.code, value:coding.system
.... category:VSCat S 1..1 CodeableConcept Classification of type of observation
..... coding S 1..* Coding Code defined by a terminology system
...... system 1..1 uri Identity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... code 1..1 code Symbol in syntax defined by the system
Fixed Value: vital-signs
... code S 1..1 CodeableConcept Blood Pressure
Required Pattern: At least the following
.... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
..... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
..... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96607-7
... subject S 0..1 Reference(US Core Patient Profile) Who and/or what the observation is about
... effective[x] S 1..1 clinically relevant time-period for the average of blood pressure (BP) readings
.... effectiveDateTime dateTime
.... effectivePeriod Period S
... value[x] 0..0
... Slices for component SC 2..* BackboneElement Average systolic and diastolic blood pressure and other qualifiers.
Slice: Unordered, Open by pattern:code
us-core-26: If there is no value a data absent reason must be present
.... component:All Slices Content/Rules for all slices
..... value[x] S 0..1 Vital Sign Component Value
...... valueQuantity Quantity S
...... valueCodeableConcept CodeableConcept
...... valueString string
...... valueBoolean boolean
...... valueInteger integer
...... valueRange Range
...... valueRatio Ratio
...... valueSampledData SampledData
...... valueTime time
...... valueDateTime dateTime
...... valuePeriod Period
..... dataAbsentReason SC 0..1 CodeableConcept Why the component result is missing
.... component:systolic S 1..1 BackboneElement Systolic Average Blood Pressure
..... code S 1..1 CodeableConcept Systolic Average Blood Pressure Code
Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96608-5
..... valueQuantity SC 0..1 Quantity Systolic Average Blood Pressure Value
...... value 1..1 decimal Numerical value (with implicit precision)
...... unit 1..1 string Unit representation
...... system 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code 1..1 code Coded form of the unit
Fixed Value: mm[Hg]
.... component:diastolic S 1..1 BackboneElement Diastolic Average Blood Pressure
..... code S 1..1 CodeableConcept Diastolic Average Blood Pressure Code
Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96609-3
..... valueQuantity SC 0..1 Quantity Diastolic Average Blood Pressure Value
...... value 1..1 decimal Numerical value (with implicit precision)
...... unit 1..1 string Unit representation
...... system 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code 1..1 code Coded form of the unit
Fixed Value: mm[Hg]

doco Documentation for this format

Constraints

IdGradePath(s)DetailsRequirements
us-core-26errorObservation.componentIf there is no value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()

Key Elements View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C 0..* Observation US Core Average Blood Pressure Profile
obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present
obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... status ?!SΣ 1..1 code registered | preliminary | final | amended +
Binding: ObservationStatus (required): Codes providing the status of an observation.

... Slices for category S 1..* CodeableConcept Classification 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 S 1..1 CodeableConcept Classification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... coding SΣ 1..* Coding Code defined by a terminology system
...... system Σ 1..1 uri Identity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... code Σ 1..1 code Symbol in syntax defined by the system
Fixed Value: vital-signs
... code SΣ 1..1 CodeableConcept Blood Pressure
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
.... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
..... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
..... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96607-7
... subject SΣ 0..1 Reference(US Core Patient Profile) Who and/or what the observation is about
... effective[x] SΣ 1..1 clinically relevant time-period for the average of blood pressure (BP) readings
.... effectivePeriod Period
... Slices for component SΣC 2..* BackboneElement Average systolic and diastolic blood pressure and other qualifiers.
Slice: Unordered, Open by pattern:code
us-core-26: If there is no value a data absent reason must be present
.... component:All Slices Content/Rules for all slices
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code Σ 1..1 CodeableConcept Type of component observation (code / type)
Binding: LOINCCodes (example): Codes identifying names of simple observations.

..... value[x] SΣ 0..1 Vital Sign Component Value
...... valueQuantity Quantity
..... dataAbsentReason SC 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

.... component:systolic SΣ 1..1 BackboneElement Systolic Average Blood Pressure
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Systolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96608-5
..... value[x] SΣC 0..1 Quantity Systolic Average Blood Pressure Value
...... value Σ 1..1 decimal Numerical value (with implicit precision)
...... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

...... unit Σ 1..1 string Unit representation
...... system ΣC 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code Σ 1..1 code Coded form of the unit
Fixed Value: mm[Hg]
.... component:diastolic SΣ 1..1 BackboneElement Diastolic Average Blood Pressure
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Diastolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96609-3
..... value[x] SΣC 0..1 Quantity Diastolic Average Blood Pressure Value
...... value Σ 1..1 decimal Numerical value (with implicit precision)
...... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

...... unit Σ 1..1 string Unit representation
...... system ΣC 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code Σ 1..1 code Coded form of the unit
Fixed Value: mm[Hg]

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Observation.statusrequiredObservationStatus
http://hl7.org/fhir/ValueSet/observation-status|4.0.1
from the FHIR Standard
Observation.categorypreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.category:VSCatpreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.codeexamplePattern: LOINC code 96607-7
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component.codeexampleLOINCCodes (a valid code from LOINC)
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard
Observation.component:systolic.codeexamplePattern: LOINC code 96608-5
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component:systolic.value[x].comparatorrequiredQuantityComparator
http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
from the FHIR Standard
Observation.component:diastolic.codeexamplePattern: LOINC code 96609-3
http://hl7.org/fhir/ValueSet/observation-codes
from the FHIR Standard
Observation.component:diastolic.value[x].comparatorrequiredQuantityComparator
http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
us-core-26errorObservation.componentIf there is no value a data absent reason must be present
: value.exists() or dataAbsentReason.exists()

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C 0..* Observation US Core Average Blood Pressure Profile
obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present
obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present
... id Σ 0..1 id Logical id of this artifact
... meta Σ 0..1 Meta Metadata about the resource
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... language 0..1 code Language of the resource content
Binding: CommonLanguages (preferred): A human language.

Additional BindingsPurpose
AllLanguages Max Binding
... text 0..1 Narrative Text summary of the resource, for human interpretation
... contained 0..* Resource Contained, inline Resources
... extension 0..* Extension Additional content defined by implementations
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... identifier Σ 0..* Identifier Business Identifier for observation
... basedOn Σ 0..* Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest) Fulfills plan, proposal or order
... partOf Σ 0..* Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy) Part of referenced event
... status ?!SΣ 1..1 code registered | preliminary | final | amended +
Binding: ObservationStatus (required): Codes providing the status of an observation.

... Slices for category S 1..* CodeableConcept Classification 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 S 1..1 CodeableConcept Classification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... coding SΣ 1..* Coding Code defined by a terminology system
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
...... system Σ 1..1 uri Identity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... version Σ 0..1 string Version of the system - if relevant
...... code Σ 1..1 code Symbol in syntax defined by the system
Fixed Value: vital-signs
...... display Σ 0..1 string Representation defined by the system
...... userSelected Σ 0..1 boolean If this coding was chosen directly by the user
..... text Σ 0..1 string Plain text representation of the concept
... code SΣ 1..1 CodeableConcept Blood Pressure
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
.... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
..... version 0..1 string Version of the system - if relevant
..... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96607-7
..... display 0..1 string Representation defined by the system
..... userSelected 0..1 boolean If this coding was chosen directly by the user
.... text 0..1 string Plain text representation of the concept
... subject SΣ 0..1 Reference(US Core Patient Profile) Who and/or what the observation is about
... focus Σ 0..* Reference(Resource) What the observation is about, when it is not about the subject of record
... encounter Σ 0..1 Reference(Encounter) Healthcare event during which this observation is made
... effective[x] SΣ 1..1 clinically relevant time-period for the average of blood pressure (BP) readings
.... effectiveDateTime dateTime
.... effectivePeriod Period S
... issued Σ 0..1 instant Date/Time this version was made available
... performer Σ 0..* Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson) Who is responsible for the observation
... dataAbsentReason C 0..1 CodeableConcept Why the result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

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


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

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

... specimen 0..1 Reference(Specimen) Specimen used for this observation
... device 0..1 Reference(Device | DeviceMetric) (Measurement) Device
... referenceRange C 0..* BackboneElement Provides guide for interpretation
obs-3: Must have at least a low or a high or text
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... low C 0..1 SimpleQuantity Low Range, if relevant
.... high C 0..1 SimpleQuantity High Range, if relevant
.... type 0..1 CodeableConcept Reference range qualifier
Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.

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


.... age 0..1 Range Applicable age range, if relevant
.... text 0..1 string Text based reference range in an observation
... hasMember Σ 0..* Reference(Observation | QuestionnaireResponse | MolecularSequence) Related resource that belongs to the Observation group
... derivedFrom Σ 0..* Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence) Related measurements the observation is made from
... Slices for component SΣC 2..* BackboneElement Average systolic and diastolic blood pressure and other qualifiers.
Slice: Unordered, Open by pattern:code
us-core-26: If there is no value a data absent reason must be present
.... component:All Slices Content/Rules for all slices
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code Σ 1..1 CodeableConcept Type of component observation (code / type)
Binding: LOINCCodes (example): Codes identifying names of simple observations.

..... value[x] SΣ 0..1 Vital Sign Component Value
...... valueQuantity Quantity S
...... valueCodeableConcept CodeableConcept
...... valueString string
...... valueBoolean boolean
...... valueInteger integer
...... valueRange Range
...... valueRatio Ratio
...... valueSampledData SampledData
...... valueTime time
...... valueDateTime dateTime
...... valuePeriod Period
..... dataAbsentReason SC 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

..... interpretation 0..* CodeableConcept High, 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 SΣ 1..1 BackboneElement Systolic Average Blood Pressure
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Systolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
...... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
....... id 0..1 string Unique id for inter-element referencing
....... extension 0..* Extension Additional content defined by implementations
....... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
....... version 0..1 string Version of the system - if relevant
....... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 96608-5
....... display 0..1 string Representation defined by the system
....... userSelected 0..1 boolean If this coding was chosen directly by the user
...... text 0..1 string Plain text representation of the concept
..... value[x] SΣC 0..1 Quantity Systolic Average Blood Pressure Value
...... id 0..1 string Unique id for inter-element referencing
...... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
...... value Σ 1..1 decimal Numerical value (with implicit precision)
...... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.

...... unit Σ 1..1 string Unit representation
...... system ΣC 1..1 uri System that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code Σ 1..1 code Coded form of the unit
Fixed Value: mm[Hg]
..... dataAbsentReason C 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.

..... interpretation 0..* CodeableConcept High, 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 SΣ 1..1 BackboneElement Diastolic Average Blood Pressure
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
..... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
..... code SΣ 1..1 CodeableConcept Diastolic Average Blood Pressure Code
Binding: LOINCCodes (example): Codes identifying names of simple observations.


Required Pattern: At least the following
...... id