description: Identifies the units of measure in which the element should be captured or expressed.
package_name: hl7.fhir.core
derivation: constraint
name: Units to use for measured value
type: null
elements:
  extension: {name: extension, index: 0}
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits'}
    index: 1
  value:
    choices: [valueCodeableConcept, valueReference]
    index: 3
  valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4}
  valueReference: {type: Reference, choiceOf: value, index: 5}
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]