description: Defines the additional constraints and extensions on the UK Core Observation Vital Signs profile, for recording a patients BMI vital signs clinical observation.
package_name: fhir.r4.ukcore.stu3.currentbuild
derivation: constraint
name: UKCoreObservationVitalSignsBMI
type: Observation
elements:
  code:
    elements:
      coding:
        index: 0
        slicing:
          slices:
            loinc:
              match: {}
              schema:
                index: 0
                elements:
                  code:
                    pattern: {type: code, value: 39156-5}
                    type: code
                    index: 1
            snomedCT:
              match: {}
              schema:
                binding: {strength: preferred, valueSet: 'https://fhir.hl7.org.uk/ValueSet/UKCore-BMI'}
                index: 2
                elements:
                  system: {index: 3}
                  code: {index: 4}
                required: [code, system]
  value:
    choices: [valueQuantity]
    index: 6
  valueQuantity: {type: Quantity, choiceOf: value, index: 7}
  value[x]:
    elements:
      value: {index: 8}
      system:
        pattern: {type: uri, value: 'http://unitsofmeasure.org'}
        type: uri
        index: 9
      code:
        pattern: {type: code, value: kg/m2}
        type: code
        index: 10
    required: [code, system, value]
package_version: 0.21.0-pre-release
class: profile
kind: resource
url: https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-VitalSigns-BMI
base: https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-VitalSigns
version: 1.0.0
required: [value, valueQuantity]