| # | | Name | Source | Ver | Description |
| 1 | | AuditEvent Accession | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | An Accession Number associated with this participant object. |
| 2 | | AuditEvent agent OnBehalfOf | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | When an AuditEvent is attributed to an agent that is acting on behalf of another agent. Typically needed when multiple agents are acting on behalf of different organizations, and when PractitionerRole is not appropriate. |
| 3 | | AuditEvent Alternative User ID | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | An AlternativeUserID Number associated with this participant object. |
| 4 | | AuditEvent Anonymized | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | True or False indicating whether all patient identifying information was removed from the data. |
| 5 | | AuditEvent Encrypted | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | True or False indicating whether the data was encrypted. |
| 6 | | AuditEvent Instance | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Th SOP Instance UID values. |
| 7 | | AuditEvent Lifecycle | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | An Lifecycle event associated with this participant object. |
| 8 | | AuditEvent MPPS | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | An MPPS Instance UID associated with this entity. |
| 9 | | AuditEvent Number Of Instances | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The Number of SOP Instances referred to by this entity. |
| 10 | | AuditEvent Participant Object Contains Study | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | A Study Instance ID, which may be used when the Entity type is not (110180, DCM, "Study Instance UID"). |
| 11 | | AuditEvent SOPClass | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Required if ParticipantObjectIDTypeCode is (110180, DCM, "Study Instance UID") and any of the optional fields (AccessionNumber, ContainsMPPS, NumberOfInstances, ContainsSOPInstances,Encrypted,Anonymized) are present in this Participant Object. May be present if ParticipantObjectIDTypeCode is (110180, DCM, "Study Instance UID") even though none of the optional fields are present. |