description: null package_name: uk.nhsdigital.r4 derivation: constraint name: NHSDigitalMessageDefinition type: MessageDefinition elements: url: {mustSupport: true, index: 0} description: {mustSupport: true, index: 1} useContext: elements: code: binding: {strength: required, valueSet: 'https://fhir.nhs.uk/ValueSet/NHSDigital-usage-context-type'} index: 2 event: mustSupport: true choices: [eventCoding] index: 4 eventCoding: {type: Coding, mustSupport: true, choiceOf: event, index: 5} focus: {mustSupport: true, index: 6} package_version: 2.7.0 class: profile kind: resource url: https://fhir.nhs.uk/StructureDefinition/NHSDigital-MessageDefinition base: http://hl7.org/fhir/StructureDefinition/MessageDefinition version: null required: [url, focus, description]