description: Identifies the kind(s) of attachment allowed to be sent for an element. package_name: rs/hl7.fhir.r5.core derivation: constraint name: mimeType type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/mimeType'} type: uri index: 1 value: choices: [valueCode] index: 3 valueCode: {type: code, choiceOf: value, index: 4} package_version: 5.0.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/mimeType base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.0.0-ballot required: [value, valueCode]