description: HealthcareService Period Extension package_name: ca.on.oh.corhealth derivation: constraint name: CorHealthHealthcareServicePeriodExt type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://corhealth-ontario.ca/fhir/StructureDefinition/corhealth-healthcareservice-period-ext'} index: 1 value: choices: [valuePeriod] index: 3 valuePeriod: {type: Period, choiceOf: value, index: 4} package_version: 0.2.0-beta extensions: {} class: extension kind: complex-type url: https://corhealth-ontario.ca/fhir/StructureDefinition/corhealth-healthcareservice-period-ext base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valuePeriod, value]