description: The schedule that was followed. package_name: rs/hl7.fhir.r4b.core derivation: constraint name: schedule type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/procedure-schedule'} type: uri index: 1 value: choices: [valueTiming] index: 3 valueTiming: {type: Timing, choiceOf: value, index: 4} package_version: 4.3.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/procedure-schedule base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.3.0 required: [value, valueTiming]