description: 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.
package_name: hl7.fhir.us.core
derivation: constraint
name: USCoreBloodPressureProfile
type: Observation
elements:
  code:
    type: CodeableConcept
    short: (USCDI) Blood Pressure
    mustSupport: true
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: 85354-9, system: 'http://loinc.org'}
    index: 0
  component:
    short: (USCDI) Component observations
    mustSupport: true
    array: true
    min: 2
    index: 1
    slicing:
      rules: open
      ordered: false
      discriminator:
      - {path: code, type: pattern}
      min: 2
      slices:
        systolic:
          match:
            code:
              coding:
              - {code: 8480-6, system: 'http://loinc.org'}
          schema:
            short: (USCDI) Systolic Blood Pressure
            mustSupport: true
            _required: true
            index: 2
            elements:
              code:
                short: (USCDI) Systolic Blood Pressure Code
                mustSupport: true
                pattern:
                  type: CodeableConcept
                  value:
                    coding:
                    - {code: 8480-6, system: 'http://loinc.org'}
                index: 3
              valueQuantity:
                type: Quantity
                short: (USCDI) Vital Sign Component Value
                mustSupport: true
                index: 4
                elements:
                  value: {type: decimal, short: (USCDI) Numerical value (with implicit precision), mustSupport: true, index: 5}
                  unit: {type: string, short: (USCDI) Unit representation, mustSupport: true, index: 6}
                  system:
                    short: (USCDI) System that defines coded unit form
                    pattern: {type: Uri, value: 'http://unitsofmeasure.org'}
                    type: uri
                    mustSupport: true
                    index: 7
                  code:
                    pattern: {type: Code, value: 'mm[Hg]'}
                    short: (USCDI) Coded form of the unit
                    type: code
                    mustSupport: true
                    index: 8
                required: [value, unit, system, code]
            required: [code]
        diastolic:
          match:
            code:
              coding:
              - {code: 8462-4, system: 'http://loinc.org'}
          schema:
            short: (USCDI) Diastolic Blood Pressure
            mustSupport: true
            _required: true
            index: 9
            elements:
              code:
                short: (USCDI) Diastolic Blood Pressure Code
                mustSupport: true
                pattern:
                  type: CodeableConcept
                  value:
                    coding:
                    - {code: 8462-4, system: 'http://loinc.org'}
                index: 10
              valueQuantity:
                type: Quantity
                short: (USCDI) Vital Sign Component Value
                mustSupport: true
                index: 11
                elements:
                  value: {type: decimal, short: (USCDI) Numerical value (with implicit precision), mustSupport: true, index: 12}
                  unit: {type: string, short: (USCDI) Unit representation, mustSupport: true, index: 13}
                  system:
                    short: (USCDI) System that defines coded unit form
                    pattern: {type: Uri, value: 'http://unitsofmeasure.org'}
                    type: uri
                    mustSupport: true
                    index: 14
                  code:
                    pattern: {type: Code, value: 'mm[Hg]'}
                    short: (USCDI) Coded form of the unit
                    type: code
                    mustSupport: true
                    index: 15
                required: [value, unit, system, code]
            required: [code]
package_version: 6.1.0-snapshot1
class: profile
kind: resource
url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-blood-pressure
base: http://hl7.org/fhir/us/core/StructureDefinition/us-core-vital-signs
version: 6.1.0-snapshot1