description: This patient or person is known not to be the same person. This would represent patients or persons who look similar, but are known not to be the same person, and are known non-duplicates. This is not intended to be an exhaustive link to all patients in the system that are not the same person. It should represent an affirmation based on manual review to reduce false flags in potential duplicate processing. package_name: hl7.fhir.uv.extensions derivation: constraint name: PatientKnownNonDuplicate type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/patient-knownNonDuplicate'} index: 1 value: choices: [valueReference] index: 3 valueReference: type: Reference choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/Patient', 'http://hl7.org/fhir/StructureDefinition/RelatedPerson'] index: 4 package_version: 5.3.0-ballot-tc extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/patient-knownNonDuplicate base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot-tc required: [valueReference, value]