| Code | Display |
| AD | Admitting Provider |
| AI | Assistant/Alternate Interpreter |
| AP | Administering Provider |
| ARI | Assistant Result Interpreter |
| AT | Attending Provider |
| AUT | AUT Author/Event Initiator |
| CP | Consulting Provider |
| DP | Dispensing Provider |
| EP | Entering Provider (probably not the same as transcriptionist) |
| EQUIP | Equipment |
| FHCP | Family Health Care Professional |
| MDIR | Medical Director |
| OP | Ordering Provider |
| OS | Outside Site(s) Where Observation May Be Performed |
| PB | Packed by |
| PH | Pharmacist (not sure how to dissect Pharmacist/Treatment Supplier's Verifier ID) |
| PI | Primary Interpreter |
| PO | Performing Organization |
| POMD | Performing Organization Medical Director |
| PP | Primary Care Provider |
| PRI | Principal Result Interpreter |
| RCT | Results Copies To |
| RO | Responsible Observer |
| RP | Referring Provider |
| RT | Referred to Provider |
| SB | Send by |
| SC | Specimen Collector |
| TN | Technician |
| TR | Transcriptionist |
| VP | Verifying Provider |
| VPS | Verifying Pharmaceutical Supplier (not sure how to dissect Pharmacist/Treatment Supplier's Verifier ID) |
| VTS | Verifying Treatment Supplier (not sure how to dissect Pharmacist/Treatment Supplier's Verifier ID) |
| WAY | Waypoint |
| WAYR | Waypoint Recipient |