description: Additional details regarding the service the appointment concerns. package_name: hl7.fhir.fi.scheduling derivation: constraint name: ServiceAdditionalInformation type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://hl7.fi/fhir/finnish-scheduling/StructureDefinition/service-additional-information'} index: 1 value: choices: [valueString, valueUrl] index: 3 valueString: {type: string, choiceOf: value, index: 4} valueUrl: {type: url, choiceOf: value, index: 5} package_version: 2.0.0-rc2 extensions: {} class: extension kind: complex-type url: https://hl7.fi/fhir/finnish-scheduling/StructureDefinition/service-additional-information base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.0.0-rc2