description: This cross-version extension represents ImmunizationEvaluation.seriesDoses[x] from http://hl7.org/fhir/StructureDefinition/ImmunizationEvaluation|4.0.1 for use in FHIR R5. package_name: hl7.fhir.uv.xver derivation: constraint name: Ext_R4_ImmunizationEvaluation_seriesDoses type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-ImmunizationEvaluation.seriesDoses'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: Recommended number of doses for immunity choices: [valuePositiveInt, valueString] index: 2 valuePositiveInt: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: positiveInt short: Recommended number of doses for immunity choiceOf: value index: 3 valueString: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: string short: Recommended number of doses for immunity choiceOf: value index: 4 package_version: r4.r5-0.0.1-snapshot-2 class: extension kind: complex-type url: http://hl7.org/fhir/4.0/StructureDefinition/extension-ImmunizationEvaluation.seriesDoses base: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0 version: 0.0.1-snapshot-2 required: [url]