description: To indicate if patient has health plan package_name: synapxe.hsar derivation: constraint name: extension-CarePlan-healthPlanExists type: Extension elements: id: {index: 0} url: pattern: {type: Uri, value: 'http://ihis.sg/extension/health-plan-exists'} index: 1 value: choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, choiceOf: value, index: 4} package_version: 1.0.0 class: extension kind: complex-type url: http://ihis.sg/extension/health-plan-exists base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0 required: [value, valueBoolean]