description: Identifies whether a patient arrives at the reporting facility via ambulance and the type of ambulance that was used. package_name: hl7.fhir.uv.extensions derivation: constraint name: EncModeOfArrival type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/encounter-modeOfArrival'} type: uri index: 1 value: choices: [valueCoding] index: 3 valueCoding: {type: Coding, choiceOf: value, index: 4} package_version: 5.3.0-ballot-tc extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/encounter-modeOfArrival base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot-tc required: [value, valueCoding]