| Code | Display | Definition | V2 Concept Comment | V2 Concept Comment As Published | HL7 Concept Usage Notes |
| AAP | Alert Acknowledging Provider | Alert Acknowledging Provider | | | |
| AC | Administration Cosigner | Person that cosigned the prescription | | | |
| AD | Admitting Provider | Admitting Provider | This role is used in the PRT associated with the PV1 segment, when more information about PV1-17 Admitting doctor is desired. | PV1-17 Admitting doctor | |
| AHP | Authorized Performing Health Professional | The specific Health Professional who has been approved to perform the ordered services for the patient. | This role is used in the PRT associated with the AUT segment, which represents an authorization or a pre-authorization for a referred procedure or requested service by the payor covering the patient's health care. This code is used when the authorization is for a person. | | |
| AI | Assistant/Alternate Interpreter | Assistant/Alternate Interpreter | | | |
| AP | Administering Provider | Administering Provider | This role is used in the PRT associated with the RXA segment, when more information about RXA-10 Administering Provider is desired. | RXA-10 Administering Provider | |
| APO | Authorized Performing Provider Organization | The Provider Organization that has been approved to perform the sanctioned procedures to which the patient was referred to. | This role is used in the PRT associated with the AUT segment, which represents an authorization or a pre-authorization for a referred procedure or requested service by the payor covering the patient's health care. This code is used when the authorization is for an organization. | | |
| ARI | Assistant Result Interpreter | Assistant Result Interpreter | This role is used in the PRT associated with the OBR segment, where OBR-33 Assistant Result Interpreter has been marked for backwards compatibility only. | | |
| AT | Attending Provider | Attending Provider | This role is used in the PRT associated with the PV1 segment, when more information about
PV1-7 Attending doctor is desired. | PV1-7 Attending doctor | |
| AUT | Author/Event Initiator | Identifies the entity responsible for initiating the event | This role is used in the PRT associated with the ORC segment, where ORC-19 Action By has been marked for backwards compatibility only. | Replaces ORC-19 Action By | |
| CLPO | Collecting Provider Organization | The organization that is responsible for collecting the specimen. | This role is used in the PRT associated with the OBR segment, where OBR-10 Collector Identifier, when intended to convey the organization information, has been marked for backwards compatibility only. | | |
| CP | Consulting Provider | Consulting Provider | | | |
| DIE | De-Identification Entity | Organization, person or device that has the authority to remove a specimen identifier. | | | |
| DP | Dispensing Provider | Dispensing Provider | This role is used in the PRT associated with the RXD segment, where RXD-10 Dispensing Provider has been marked for backwards compatibility only. | RXD-10 Dispensing Provider | |
| EARI | Expected Assistant Result Interpreter | The Assistant Result Interpreter who is expected to interpret the result (in the future). | This will support filtering orders into the correct work queue of the Assistant Result Interpreter. | | |
| ED | Entering Device | Identifies the device that was used to enter the order into the system. | This role is used in the PRT associated with the ORC segment, where ORC-18 Entering Device has been marked for backwards compatibility only. | | |
| EO | Entering Organization | Identifies the organization that entered the order into the system. | This role is used in the PRT associated with the ORC segment, where ORC-17 Entering Organization has been marked for backwards compatibility only. | | |
| EP | Entering Person | Identifies the person that entered the order into the system | Replaces ORC-10 Entered By | Replaces ORC-10 Entered By | |
| EPRI | Expected Principal Result Interpreter | The Principal Result Interpreter who is expected to interpret the result (in the future). | This will support filtering orders into the correct work queue of the Principal Result Interpreter. | | |
| EQUIP | Equipment | Equipment | This role is used in the PRT associated with the OBX segment, where OBX-18 Equipment Instance Identifier has been marked for backwards compatibility only. | | |
| FHCP | Family Health Care Professional | Family Health Care Professional | | | |
| FL | From Location | Describes the location (coordinates) of the specimen/container in the previous holder / storage equipment before the move or the geographical location from which the specimen/container was moved. | | | |
| MDIR | Medical Director | Medical Director | | OBX-25 Performing Organization Medical Director | |
| OF | Ordering Facility | The facility from where the order was placed | This role is used in the PRT associated with the ORC segment, where ORC-21 Ordering Facility Name, ORC-22 Ordering Facility Address and ORC-23 Ordering Facility Phone Number have been marked for backwards compatibility only. | | |
| OP | Ordering Provider | Ordering Provider | This role is used in the PRT associated with either the ORC segment, where ORC-12 Ordering Provider, OBR-16 Ordering Provider, ORC-24 Ordering Provider Address have been marked for backwards compatibility only, or the OBR segment, where OBR-16 Ordering Provider has been marked for backwards compatibility only; the RXO segment, when more information about RXO-14 Ordering Provider's DEA Number is desired; the RXE segment, where RXE-13 Ordering Provider's DEA Number has been marked for backwards compatibility only. | ORC-12 Ordering Provider, OBR-16 Ordering Provider, RXO-14 Ordering Provider's DEA Number, RXE-13 Ordering Provider's DEA Number, ORC-24 Ordering Provider Address | |
| OPO | Ordering Provider Organization | The organization the ordering provider is associated with. | This code is broader than Referring Provider Organization (RPO); it can be used for inter and intra-organizational orders. | | |
| OS | Outside Site(s) Where Observation May Be Performed | Outside Site(s) Where Observation May Be Performed | This role is used in the PRT associated with the OM1 segment, where OM1-27 Outside Site(s) Where Observation May Be Performed has been deprecated. | Replacing OM1-27 Outside Site(s) Where Observation May Be Performed | |
| PB | Packed by | Packed by | | | |
| PH | Pharmacist | Identifies the person taking responsibility for the prescription dispense | This role is used in the PRT associated with the RXE segment, where RXE-14 Pharmacist/Treatment Supplier's Verifier ID has been marked for backwards compatibility only. | Replaces RXE-14 Pharmacist/Treatment Supplier's Verifier ID | |
| PI | Primary Interpreter | Primary Interpreter | | | |
| PO | Performing Organization | Performing Organization | | | |
| POMD | Performing Organization Medical Director | Performing Organization Medical Director | This role is used in the PRT associated with the OBX segment, where OBX-25 Performing Organization Medical Director has been marked for backwards compatibility only | | |
| PP | Primary Care Provider | Primary Care Provider | | | |
| PPH | Patient Preferred Pharmacy | Pharmacy the patient would prefer to use for any future medication orders. | When a patient registers, this allows a system to indicate the default pharmacy to which the provider should send prescribed medication orders. | | Most likely to be used in ADT messages for outpatient care. |
| PRI | Principal Result Interpreter | Identifies the person responsible for interpreting the results of the study/test | This role is used in the PRT associated with the OBR segment, where OBR-32 Principal Result Interpreter has been marked for backwards compatibility only. | | |
| RCT | Results Copies To | Results Copies To | | | |
| RHP | Referring Health Professional | The Health Professional who refers the patient. | | | |
| RIE | Re-Identification Entity | Organization, person or device that has the authority to assign a specimen identifier. | | | |
| RO | Responsible Observer | Responsible Observer | This role is used in the PRT associated with the OBX segment, where OBX-16 Responsible Observer has been marked for backwards compatibility only | OBX-16 Responsible Observer | |
| RP | Referring Provider | Referring Provider | This role is used in the PRT associated with the PV1 segment, when more information about PV1-8 Referring doctor is desired. | PV1-8 Referring doctor | |
| RPO | Referring Provider Organization | The Provider Organization that refers the patient. | | | |
| RT | Referred to Provider | Referred to Provider | | | |
| SB | Send by | Send by | | | |
| SC | Specimen Collector | The person that collected the specimen. | This role is used in the PRT associated with the OBR segment, where OBR-10 Collector Identifier, when intended to convey person information, has been marked for backwards compatibility only | OBR-10 Collector Identifier | |
| TL | To Location | Describes the location (coordinates) of the specimen/container in the previous holder / storage equipment after the move or the geographical location to which the specimen/container was moved. | | | |
| TN | Technician | Technician | This role is used in the PRT associated with the OBR segment, where OBR-34 Technician has been marked for backwards compatibility only | | |
| TR | Transcriptionist | Transcriptionist | This role is used in the PRT associated with the OBR segment, where OBR-35 Transcriptionist has been marked for backwards compatibility only | | |
| VP | Verifier (Verifying Person) | Identifies the person verifying the dispense / a step in the dispense process / verifying the treatment corresponds to the order | This role is used in the PRT associated with the ORC segment, where Replaces ORC-11 Verified By has been marked for backwards compatibility only | Replaces ORC-11 Verified By | |
| VPS | Verifying Pharmaceutical Supplier (not sure how to dissect Pharmacist/Treatment Supplier's Verifier ID) | Verifying Pharmaceutical Supplier (not sure how to dissect Pharmacist/Treatment Supplier's Verifier ID) | | RXE-14 Pharmacist/Treatment Supplier's Verifier ID | Use of this code is deprecated; depending on the role of the person use either PH or VP. |
| VTS | Verifying Treatment Supplier (not sure how to dissect Pharmacist/Treatment Supplier's Verifier ID) | Verifying Treatment Supplier (not sure how to dissect Pharmacist/Treatment Supplier's Verifier ID) | | RXE-14 Pharmacist/Treatment Supplier's Verifier ID | Use of this code is deprecated; depending on the role of the person use either PH or VP. |
| WAY | Waypoint | Waypoint | | | |
| WAYR | Waypoint Recipient | Waypoint Recipient | | | |
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