description: This extension is used to convey the reason for not providing the patient's health card number as a business identifier. package_name: ca.infoway.io.erec derivation: constraint name: ReasonForNoHCN type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-reason-for-no-HCN-EXT'} index: 0 value: choices: [valueCodeableConcept] index: 2 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 3} package_version: 1.0.0-dft-ballot class: extension kind: complex-type url: https://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-reason-for-no-HCN-EXT base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0