description: 'Identifies that the element carrying this extension is only a correct value for a particular range of FHIR versions. This extension is found in contexts where a definition is applying to more than one version, usually defining extensions, and should only be used in context that clearly document how a cross-version definition is used. While there are no limitations to where this extension can be used, known uses are: StructureDefinition.context, ElementDefinition.type, ElementDefinition.additionalBinding and ... ' package_name: hl7.fhir.uv.extensions derivation: constraint name: VersionSpecificUse type: Extension elements: extension: type: Extension short: Starting Version index: 0 slicing: slices: startFhirVersion: match: {} schema: type: Extension short: Starting Version index: 0 extensions: {} elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: startFhirVersion} index: 2 value: choices: [valueCode] index: 4 valueCode: {type: code, choiceOf: value, index: 5} required: [valueCode, value] endFhirVersion: match: {} schema: type: Extension short: Ending Version index: 6 extensions: {} elements: extension: {index: 7} url: type: uri pattern: {type: Uri, value: endFhirVersion} index: 8 value: choices: [valueCode] index: 10 valueCode: {type: code, choiceOf: value, index: 11} required: [valueCode, value] url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/version-specific-use'} index: 12 value: choices: [] index: 14 package_version: 5.3.0-ballot extensions: startFhirVersion: url: null type: Extension short: Starting Version index: 0 extensions: {} elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: startFhirVersion} index: 2 value: choices: [valueCode] index: 4 valueCode: {type: code, choiceOf: value, index: 5} required: [valueCode, value] endFhirVersion: url: null type: Extension short: Ending Version index: 6 extensions: {} elements: extension: {index: 7} url: type: uri pattern: {type: Uri, value: endFhirVersion} index: 8 value: choices: [valueCode] index: 10 valueCode: {type: code, choiceOf: value, index: 11} required: [valueCode, value] class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/version-specific-use base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot