description: Identifies the units of measure in which the element should be captured or expressed.
package_name: hl7.fhir.uv.extensions.r3
derivation: constraint
name: AllowedUnits
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits'}
    index: 1
  value:
    choices: [valueCodeableConcept, valueCanonical]
    index: 3
  valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4}
  valueCanonical: {type: canonical, choiceOf: value, index: 5}
package_version: 5.1.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.1.0
required: [valueCanonical, value, valueCodeableConcept]