description: Days of a possibly repeating cycle on which the action is to be performed. The cycle is defined by the first action with a timing element that is a parent of the daysOfCycle. package_name: hl7.fhir.r3.examples derivation: constraint name: daysOfCycle type: Extension elements: extension: type: Extension short: What day to perform array: true min: 1 index: 0 slicing: slices: day: match: {} schema: type: Extension short: What day to perform array: true min: 1 _required: true index: 0 extensions: {} elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: day} index: 2 valueInteger: {type: integer, index: 3} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/timing-daysOfCycle'} index: 4 value: choices: [] index: 6 package_version: 3.0.2 extensions: day: min: 1 short: What day to perform index: 0 type: Extension array: true elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: day} index: 2 valueInteger: {type: integer, index: 3} _required: true extensions: {} url: null class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/timing-daysOfCycle base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [extension]