description: A concept that represents a set of ideas, abstractions, or things in the real world that can be identified with explicit boundaries and meaning and whose properties and behavior follow the same rules. It may be either a single or a group of associated concepts, abstractions, or things. package_name: hl7.fhir.r2.examples name: Object Class type: null elements: extension: {name: extension, index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/11179-objectClass'} index: 1 value: choices: [valueCoding] index: 3 valueCoding: {type: Coding, choiceOf: value, index: 4} package_version: 1.0.2 extensions: {} class: datatype kind: datatype url: http://hl7.org/fhir/StructureDefinition/11179-objectClass version: null required: [valueCoding, value]