description: This extension links this observation with the certified reference material used for the calibration.\nThe certified reference material is identified by using a CodeableConcept.\nThis extension should be used when the unit is UCUM [IU].
package_name: hl7.fhir.uv.lab-report.r4
derivation: constraint
name: ObservationCertifiedRefMaterialCodeable
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/lab-report/StructureDefinition/observation-certifiedRefMaterialCodeable'}
    index: 1
  value:
    choices: [valueCodeableConcept]
    index: 3
  valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4}
package_version: 1.0.0-ballot
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/uv/lab-report/StructureDefinition/observation-certifiedRefMaterialCodeable
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0-ballot