description: The duration of the interval in appropriate units of time (e.g. days or hours, etc.) package_name: healthdata.be.r4.cbb derivation: constraint name: ExtTimeIntervalDuration type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.healthdata.be/StructureDefinition/ext-TimeInterval.Duration'} index: 0 value: short: Duration choices: [valueDuration] index: 2 valueDuration: {type: Duration, short: Duration, choiceOf: value, index: 3} package_version: 0.12.0-beta class: extension kind: complex-type url: https://fhir.healthdata.be/StructureDefinition/ext-TimeInterval.Duration base: http://hl7.org/fhir/StructureDefinition/Extension version: null