description: Identifies the units of measure in which the element should be captured or expressed.
package_name: hl7.fhir.r2b.core
derivation: constraint
name: Units to use for measured value
type: null
elements:
  extension:
    isModifier: false
    name: extension
    mustSupport: false
    maxLength: 0
    base: {max: '0', min: 0, path: Extension.extension}
    isSummary: false
    index: 0
  url:
    isModifier: false
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits'}
    type: uri
    mustSupport: false
    maxLength: 0
    base: {max: '1', min: 0, path: Extension.url}
    isSummary: false
    index: 1
  value:
    isModifier: false
    mustSupport: false
    choices: [valueCodeableConcept, valueReference]
    maxLength: 0
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    isSummary: false
    index: 3
  valueCodeableConcept:
    isModifier: false
    index: 4
    type: CodeableConcept
    mustSupport: false
    maxLength: 0
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    isSummary: false
  valueReference:
    isModifier: false
    index: 5
    type: Reference
    mustSupport: false
    maxLength: 0
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    isSummary: false
package_version: 1.4.0
extensions: {}
class: datatype
kind: datatype
url: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits
base: http://hl7.org/fhir/StructureDefinition/Extension
version: null
required: [valueReference, value, valueCodeableConcept]