{description: 'The definition of a value set is used to create a simple collection of codes suitable for use for data entry or validation. The operation is called at the system level and a url **SHALL** be provided.  Additionally, the valueset **SHALL** use the current date as the expansion date and **SHALL** include only active codes. An expanded value set will be returned, or an OperationOutcome with an error message. \n\nFor more details regarding this operation, see the FHIR R4 [`$expand`](https://hl7.org/fhir/R4/operation-valueset-expand.html) operation definition.', package_name: hl7.fhir.us.davinci-dtr, name: DTRValuesetExpansion, type: 'true', package_version: 2.2.0-ballot, class: operation, kind: operation, url: 'http://hl7.org/fhir/us/davinci-dtr/OperationDefinition/DTR-ValueSet-expand', version: 2.2.0-ballot}