{description: 'Validate that a coded value is in the code system. If the operation is not called at the instance level, one of the parameters \"url\" or \"codeSystem\" must be provided. The operation returns a result (true / false), an error message, and the recommended display for the code.\n\nWhen invoking this operation, a client SHALL provide one (and only one) of the parameters (code+system, coding, or codeableConcept). Other parameters (including version and display) are optional', package_name: hl7.fhir.r5.examples, name: Code System based Validation, type: 'true', package_version: 4.2.0, class: operation, kind: operation, url: 'http://hl7.org/fhir/OperationDefinition/CodeSystem-validate-code', version: 4.2.0}