description: This extension allows for the expression of the date at which the insurance card was issued by the payer. The health plan may pass this along with the Coverage resource to indicate when the information became in force. package_name: hl7.fhir.us.insurance derivation: constraint name: CardIssueDate type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/insurance-card/StructureDefinition/C4DIC-CardIssueDate-extension'} index: 1 value: choices: [valueDate] index: 3 valueDate: {type: date, choiceOf: value, index: 4} package_version: card-0.1.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/us/insurance-card/StructureDefinition/C4DIC-CardIssueDate-extension base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0 required: [value, valueDate]