description: Extension for capturing observation period information package_name: synapxe.sgcdi derivation: constraint name: observationPeriod type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://fhir.synapxe.sg/StructureDefinition/ext-ed-observationPeriod'} index: 1 value: short: Observation Period choices: [valuePeriod] index: 3 valuePeriod: {type: Period, short: Observation Period, choiceOf: value, index: 4} package_version: 1.1.5 extensions: {} class: extension kind: complex-type url: https://fhir.synapxe.sg/StructureDefinition/ext-ed-observationPeriod base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valuePeriod, value]