description: The time of the first incision. package_name: hl7.fhir.core derivation: constraint name: incisionDateTime type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/procedure-incisionDateTime'} index: 1 valueDateTime: {type: dateTime, index: 2} package_version: 3.2.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/procedure-incisionDateTime base: http://hl7.org/fhir/StructureDefinition/Extension version: null