description: This cross-version extension represents DeviceRequest.asNeeded from http://hl7.org/fhir/StructureDefinition/DeviceRequest|5.0.0 for use in FHIR R4B.
package_name: hl7.fhir.uv.xver-r5.r4b
derivation: constraint
name: ext_R5_DeviceRequest_asNeeded
type: Extension
elements:
  value:
    base: {path: 'Extension.value[x]'}
    short: PRN status of request
    choices: [valueBoolean]
    index: 1
  valueBoolean:
    base: {path: 'Extension.value[x]'}
    type: boolean
    short: PRN status of request
    choiceOf: value
    index: 2
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-DeviceRequest.asNeeded'}
    index: 3
package_version: 0.0.1-snapshot-1
class: extension
kind: complex-type
url: http://hl7.org/fhir/5.0/StructureDefinition/extension-DeviceRequest.asNeeded
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.0.1-snapshot-1
required: [url]