| Code | Display | Comments |
|---|
 AAP | Alert Acknowledging Provider | |
| AC | Administration Cosigner | |
| AD | Admitting Provider | |
| AHP | Authorized Performing Health Professional | |
| AI | Assistant/Alternate Interpreter | |
| AP | Administering Provider | |
| APO | Authorized Performing Provider Organization | |
| ARI | Assistant Result Interpreter | |
| AT | Attending Provider | |
| AUT | Author/Event Initiator | |
| CLPO | Collecting Provider Organization | |
| CP | Consulting Provider | |
| DIE | De-Identification Entity | |
| DP | Dispensing Provider | |
| EARI | Expected Assistant Result Interpreter | |
| ED | Entering Device | |
| EO | Entering Organization | |
| EP | Entering Person | |
| EPRI | Expected Principal Result Interpreter | |
| EQUIP | Equipment | |
| FHCP | Family Health Care Professional | |
| FL | From Location | |
| MDIR | Medical Director | |
| OF | Ordering Facility | |
| OP | Ordering Provider | |
| OPO | Ordering Provider Organization | |
| OS | Outside Site(s) Where Observation May Be Performed | |
| PB | Packed by | |
| PH | Pharmacist | |
| PI | Primary Interpreter | |
| PO | Performing Organization | |
| POMD | Performing Organization Medical Director | |
| PP | Primary Care Provider | |
| PPH | Patient Preferred Pharmacy | |
| PRI | Principal Result Interpreter | |
| RCT | Results Copies To | |
| RHP | Referring Health Professional | |
| RIE | Re-Identification Entity | |
| RO | Responsible Observer | |
| RP | Referring Provider | |
| RPO | Referring Provider Organization | |
| RT | Referred to Provider | |
| SB | Send by | |
| SC | Specimen Collector | |
| TL | To Location | |
| TN | Technician | |
| TR | Transcriptionist | |
| VP | Verifier (Verifying Person) | |
| 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 | |