description: This MessageHeader resource is constrained to represent a message header for an event message. package_name: NHSD.Assets.STU3 derivation: constraint name: Event-MessageHeader-1 type: MessageHeader elements: response: {index: 17} enterer: type: Reference refers: ['https://fhir.hl7.org.uk/STU3/StructureDefinition/CareConnect-Practitioner-1'] index: 12 author: {index: 13} reason: {index: 16} responsible: type: Reference refers: ['https://fhir.hl7.org.uk/STU3/StructureDefinition/CareConnect-Organization-1', 'https://fhir.hl7.org.uk/STU3/StructureDefinition/CareConnect-Practitioner-1'] index: 14 elements: reference: {index: 15} required: [reference] extension: index: 1 slicing: rules: open discriminator: - {path: url, type: value} min: null slices: routingDemographics: match: {url: null} schema: {short: An Extension to carry a summary of the patient's demographics., type: Extension, mustSupport: true, url: h, index: 2} min: 0 max: 1 messageEventType: match: {url: null} schema: {type: Extension, url: h, index: 3} min: 1 max: 1 event: index: 4 elements: system: {index: 5} code: {index: 6} display: {index: 7} userSelected: {index: 8} required: [display, system, code] id: {index: 0} sender: type: Reference refers: ['https://fhir.hl7.org.uk/STU3/StructureDefinition/CareConnect-Organization-1'] index: 11 focus: {index: 18} receiver: {index: 10} destination: {index: 9} package_version: 1.0.0 extensions: routingDemographics: {url: h, min: 0, max: 1, short: An Extension to carry a summary of the patient's demographics., type: Extension, mustSupport: true, index: 2} messageEventType: {url: h, min: 1, max: 1, type: Extension, index: 3} class: profile kind: resource url: https://fhir.nhs.uk/STU3/StructureDefinition/Event-MessageHeader-1 base: http://hl7.org/fhir/StructureDefinition/MessageHeader version: 1.2.0 required: [focus, id, responsible]