| Code | Display | status | deprecated | v2-concComment | v2-concCommentAsPub | Comments |
|---|
 X01 | PEX - Product experience | A | A | 2.9 | 2.9 | | | |
| A01 | ADT/ACK - Admit/visit notification | A | A | | | | |
| A02 | ADT/ACK - Transfer a patient | A | A | | | | |
| A03 | ADT/ACK - Discharge/end visit | A | A | | | | |
| A04 | ADT/ACK - Register a patient | A | A | | | | |
| A05 | ADT/ACK - Pre-admit a patient | A | A | | | | |
| A06 | ADT/ACK - Change an outpatient to an inpatient | A | A | | | | |
| A07 | ADT/ACK - Change an inpatient to an outpatient | A | A | | | | |
| A08 | ADT/ACK - Update patient information | A | A | | | | |
| A09 | ADT/ACK - Patient departing - tracking | A | A | | | | |
| A10 | ADT/ACK - Patient arriving - tracking | A | A | | | | |
| A11 | ADT/ACK - Cancel admit/visit notification | A | A | | | | |
| A12 | ADT/ACK - Cancel transfer | A | A | | | | |
| A13 | ADT/ACK - Cancel discharge/end visit | A | A | | | | |
| A14 | ADT/ACK - Pending admit | A | A | | | | |
| A15 | ADT/ACK - Pending transfer | A | A | | | | |
| A16 | ADT/ACK - Pending discharge | A | A | | | | |
| A17 | ADT/ACK - Swap patients | A | A | | | | |
| A18 | ADT/ACK - Merge patient information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A19 | QRY/ADR - Patient query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A20 | ADT/ACK - Bed status update | A | A | | | | |
| A21 | ADT/ACK - Patient goes on a "leave of absence" | A | A | | | | |
| A22 | ADT/ACK - Patient returns from a "leave of absence" | A | A | | | | |
| A23 | ADT/ACK - Delete a patient record | A | A | | | | |
| A24 | ADT/ACK - Link patient information | A | A | | | | |
| A25 | ADT/ACK - Cancel pending discharge | A | A | | | | |
| A26 | ADT/ACK - Cancel pending transfer | A | A | | | | |
| A27 | ADT/ACK - Cancel pending admit | A | A | | | | |
| A28 | ADT/ACK - Add person information | A | A | | | | |
| A29 | ADT/ACK - Delete person information | A | A | | | | |
| A30 | ADT/ACK - Merge person information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A31 | ADT/ACK - Update person information | A | A | | | | |
| A32 | ADT/ACK - Cancel patient arriving - tracking | A | A | | | | |
| A33 | ADT/ACK - Cancel patient departing - tracking | A | A | | | | |
| A34 | ADT/ACK - Merge patient information - patient ID only | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A35 | ADT/ACK - Merge patient information - account number only | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A36 | ADT/ACK - Merge patient information - patient ID and account number | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A37 | ADT/ACK - Unlink patient information | A | A | | | | |
| A38 | ADT/ACK - Cancel pre-admit | A | A | | | | |
| A39 | ADT/ACK - Merge person - patient ID | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A40 | ADT/ACK - Merge patient - patient identifier list | A | A | | | | |
| A41 | ADT/ACK - Merge account - patient account number | A | A | | | | |
| A42 | ADT/ACK - Merge visit - visit number | A | A | | | | |
| A43 | ADT/ACK - Move patient information - patient identifier list | A | A | | | | |
| A44 | ADT/ACK - Move account information - patient account number | A | A | | | | |
| A45 | ADT/ACK - Move visit information - visit number | A | A | | | | |
| A46 | ADT/ACK - Change patient ID | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A47 | ADT/ACK - Change patient identifier list | A | A | | | | |
| A48 | ADT/ACK - Change alternate patient ID | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| A49 | ADT/ACK - Change patient account number | A | A | | | | |
| A50 | ADT/ACK - Change visit number | A | A | | | | |
| A51 | ADT/ACK - Change alternate visit ID | A | A | | | | |
| A52 | ADT/ACK - Cancel leave of absence for a patient | A | A | | | | |
| A53 | ADT/ACK - Cancel patient returns from a leave of absence | A | A | | | | |
| A54 | ADT/ACK - Change attending doctor | A | A | | | | |
| A55 | ADT/ACK - Cancel change attending doctor | A | A | | | | |
| A60 | ADT/ACK - Update allergy information | A | A | | | | |
| A61 | ADT/ACK - Change consulting doctor | A | A | | | | |
| A62 | ADT/ACK - Cancel change consulting doctor | A | A | | | | |
| B01 | PMU/ACK - Add personnel record | A | A | | | | |
| B02 | PMU/ACK - Update personnel record | A | A | | | | |
| B03 | PMU/ACK - Delete personnel re cord | A | A | | | | |
| B04 | PMU/ACK - Active practicing person | A | A | | | | |
| B05 | PMU/ACK - Deactivate practicing person | A | A | | | | |
| B06 | PMU/ACK - Terminate practicing person | A | A | | | | |
| B07 | PMU/ACK - Grant Certificate/Permission | A | A | | | | |
| B08 | PMU/ACK - Revoke Certificate/Permission | A | A | | | | |
| C01 | CRM - Register a patient on a clinical trial | A | A | | | | |
| C02 | CRM - Cancel a patient registration on clinical trial (for clerical mistakes only) | A | A | | | | |
| C03 | CRM - Correct/update registration information | A | A | | | | |
| C04 | CRM - Patient has gone off a clinical trial | A | A | | | | |
| C05 | CRM - Patient enters phase of clinical trial | A | A | | | | |
| C06 | CRM - Cancel patient entering a phase (clerical mistake) | A | A | | | | |
| C07 | CRM - Correct/update phase information | A | A | | | | |
| C08 | CRM - Patient has gone off phase of clinical trial | A | A | | | | |
| C09 | CSU - Automated time intervals for reporting, like monthly | A | A | | | | |
| C10 | CSU - Patient completes the clinical trial | A | A | | | | |
| C11 | CSU - Patient completes a phase of the clinical trial | A | A | | | | |
| C12 | CSU - Update/correction of patient order/result information | A | A | | | | |
| CNQ | Cancel Query | A | A | | | | |
| E01 | Submit HealthCare Services Invoice | A | A | | | | |
| E02 | Cancel HealthCare Services Invoice | A | A | | | | |
| E03 | HealthCare Services Invoice Status | A | A | | | | |
| varies | MFQ/MFR - Master files query (use event same as asking for e.g., M05 - location) | D | D | 2.9 | 2.9 | | | |
| E04 | Re-Assess HealthCare Services Invoice Request | A | A | | | | |
| E10 | Edit/Adjudication Results | A | A | | | | |
| E12 | Request Additional Information | A | A | | | | |
| E13 | Additional Information Response | A | A | | | | |
| E15 | Payment/Remittance Advice | A | A | | | | |
| E20 | Submit Authorization Request | A | A | | | | |
| E21 | Cancel Authorization Request | A | A | | | | |
| E22 | Authorization Request Status | A | A | | | | |
| E24 | Authorization Response | A | A | | | | |
| E30 | Submit Health Document related to Authorization Request | A | A | | reserved for future/not yet defined | reserved for future/not yet defined | reserved for future/not yet defined | reserved for future/not yet defined | |
| E31 | Cancel Health Document related to Authorization Request | A | A | | reserved for future/not yet defined | reserved for future/not yet defined | reserved for future/not yet defined | reserved for future/not yet defined | |
| I01 | RQI/RPI - Request for insurance information | A | A | | | | |
| I02 | RQI/RPL - Request/receipt of patient selection display list | A | A | | | | |
| I03 | RQI/RPR - Request/receipt of patient selection list | A | A | | | | |
| I04 | RQD/RPI - Request for patient demographic data | A | A | | | | |
| I05 | RQC/RCI - Request for patient clinical information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| I06 | RQC/RCL - Request/receipt of clinical data listing | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| I07 | PIN/ACK - Unsolicited insurance information | A | A | | | | |
| I08 | RQA/RPA - Request for treatment authorization information | A | A | | | | |
| I09 | RQA/RPA - Request for modification to an authorization | A | A | | | | |
| I10 | RQA/RPA - Request for resubmission of an authorization | A | A | | | | |
| I11 | RQA/RPA - Request for cancellation of an authorization | A | A | | | | |
| I12 | REF/RRI - Patient referral | A | A | | | | |
| I13 | REF/RRI - Modify patient referral | A | A | | | | |
| I14 | REF/RRI - Cancel patient referral | A | A | | | | |
| I15 | REF/RRI - Request patient referral status | A | A | | | | |
| I16 | Collaborative Care Referral | A | A | | | | |
| I17 | Modify Collaborative Care Referral | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| I18 | Cancel Collaborative Care Referral | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| I19 | Collaborative Care Query/Collaborative Care Query Update | A | A | | | | |
| I20 | Asynchronous Collaborative Care Update | A | A | | | | |
| I21 | Collaborative Care Message | A | A | | | | |
| I22 | Collaborative Care Fetch / Collaborative Care Information | A | A | | | | |
| J01 | QCN/ACK - Cancel query/acknowledge message | A | A | | | | |
| J02 | QSX/ACK - Cancel subscription/acknowledge message | A | A | | | | |
| K11 | RSP - Segment pattern response in response to QBP^Q11 | A | A | | | | |
| K13 | RTB - Tabular response in response to QBP^Q13 | A | A | | | | |
| K15 | RDY - Display response in response to QBP^Q15 | A | A | | | | |
| K21 | RSP - Get person demographics response | A | A | | | | |
| K22 | RSP - Find candidates response | A | A | | | | |
| K23 | RSP - Get corresponding identifiers response | A | A | | | | |
| K24 | RSP - Allocate identifiers response | A | A | | | | |
| K25 | RSP - Personnel Information by Segment Response | A | A | | | | |
| K31 | RSP -Dispense History Response | A | A | | | | |
| K32 | Find Candidates including Visit Information Response | A | A | | | | |
| K33 | Get Donor Record Candidates Response Message | A | A | | | | |
| K34 | Segment Pattern Response Message | A | A | | | | |
| M01 | MFN/MFK - Master file not otherwise specified | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| M02 | MFN/MFK - Master file - staff practitioner | A | A | | | | |
| M03 | MFN/MFK - Master file - test/observation | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| M04 | MFN/MFK - Master files charge description | A | A | | | | |
| M05 | MFN/MFK - Patient location master file | A | A | | | | |
| M06 | MFN/MFK - Clinical study with phases and schedules master file | A | A | | | | |
| M07 | MFN/MFK - Clinical study without phases but with schedules master file | A | A | | | | |
| M08 | MFN/MFK - Test/observation (numeric) master file | A | A | | | | |
| M09 | MFN/MFK - Test/observation (categorical) master file | A | A | | | | |
| M10 | MFN/MFK - Test /observation batteries master file | A | A | | | | |
| M11 | MFN/MFK - Test/calculated observations master file | A | A | | | | |
| M12 | MFN/MFK - Master file notification message | A | A | | | | |
| M13 | MFN/MFK - Master file notification - general | A | A | | | | |
| M14 | MFN/MFK - Master file notification - site defined | A | A | | | | |
| M15 | MFN/MFK - Inventory item master file notification | A | A | | | | |
| R0R | R0R - Pharmacy prescription order query response | D | D | 2.9 | 2.9 | | | |
| M16 | MFN/MFK - Master File Notification Inventory Item Enhanced | A | A | | | | |
| M17 | DRG Master File Message | A | A | | | | |
| M18 | MFN/MFK - Master file notification - Test/Observation (Payer) | A | A | | | | |
| N01 | NMQ/NMR - Application management query message | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| N02 | NMD/ACK - Application management data message (unsolicited) | A | A | | | | |
| O01 | ORM - Order message (also RDE, RDS, RGV, RAS) | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| O02 | ORR - Order response (also RRE, RRD, RRG, RRA) | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| O03 | OMD - Diet order | A | A | | | | |
| O04 | ORD - Diet order acknowledgment | A | A | | | | |
| O05 | OMS - Stock requisition order | A | A | | | | |
| O06 | ORS - Stock requisition acknowledgment | A | A | | | | |
| O07 | OMN - Non-stock requisition order | A | A | | | | |
| O08 | ORN - Non-stock requisition acknowledgment | A | A | | | | |
| O09 | OMP - Pharmacy/treatment order | A | A | | | | |
| O10 | ORP - Pharmacy/treatment order acknowledgment | A | A | | | | |
| O11 | RDE - Pharmacy/treatment encoded order | A | A | | | | |
| O12 | RRE - Pharmacy/treatment encoded order acknowledgment | A | A | | | | |
| O13 | RDS - Pharmacy/treatment dispense | A | A | | | | |
| O14 | RRD - Pharmacy/treatment dispense acknowledgment | A | A | | | | |
| O15 | RGV - Pharmacy/treatment give | A | A | | | | |
| O16 | RRG - Pharmacy/treatment give acknowledgment | A | A | | | | |
| O17 | RAS - Pharmacy/treatment administration | A | A | | | | |
| O18 | RRA - Pharmacy/treatment administration acknowledgment | A | A | | | | |
| O19 | OMG - General clinical order | A | A | | | | |
| O20 | ORG/ORL - General clinical order response | A | A | | | | |
| O21 | OML - Laboratory order | A | A | | | | |
| O22 | ORL - General laboratory order response message to any OML | A | A | | | | |
| O23 | OMI - Imaging order | A | A | | | | |
| O24 | ORI - Imaging order response message to any OMI | A | A | | | | |
| O25 | RDE - Pharmacy/treatment refill authorization request | A | A | | | | |
| O26 | RRE - Pharmacy/Treatment Refill Authorization Acknowledgement | A | A | | | | |
| O27 | OMB - Blood product order | A | A | | | | |
| O28 | ORB - Blood product order acknowledgment | A | A | | | | |
| O29 | BPS - Blood product dispense status | A | A | | | | |
| O30 | BRP - Blood product dispense status acknowledgment | A | A | | | | |
| O31 | BTS - Blood product transfusion/disposition | A | A | | | | |
| O32 | BRT - Blood product transfusion/disposition acknowledgment | A | A | | | | |
| O33 | OML - Laboratory order for multiple orders related to a single specimen | A | A | | | | |
| O34 | ORL - Laboratory order response message to a multiple order related to single specimen OML | A | A | | | | |
| O35 | OML - Laboratory order for multiple orders related to a single container of a specimen | A | A | | | | |
| R05 | QRY/DSR - query for display results (See Q01) | A | A | 2.9 | 2.9 | | | |
| O36 | ORL - Laboratory order response message to a single container of a specimen OML | A | A | | | | |
| R06 | UDM - unsolicited update/display results (See Q05) | A | A | 2.9 | 2.9 | | | |
| O37 | OPL - Population/Location-Based Laboratory Order Message | A | A | | | | |
| O38 | OPR - Population/Location-Based Laboratory Order Acknowledgment Message | A | A | | | | |
| O39 | Specimen shipment centric laboratory order | A | A | | | | |
| O40 | Specimen Shipment Centric Laboratory Order Acknowledgment Message | A | A | | | | |
| O41 | DBC - Create Donor Record Message | A | A | | | | |
| O42 | DBU - Update Donor Record Message | A | A | | | | |
| RAR | RAR - Pharmacy administration information query response | A | A | 2.9 | 2.9 | | | |
| O43 | General Order Message with Document Payload Acknowledgement Message | A | A | | | | |
| RDR | RDR - Pharmacy dispense information query response | A | A | 2.9 | 2.9 | | | |
| Q04 | EQQ - Embedded query language query | A | A | 2.9 | 2.9 | | | |
| O44 | Donor Registration - Minimal Message | A | A | | | | |
| RER | RER - Pharmacy encoded order information query response | A | A | 2.9 | 2.9 | | | |
| O45 | Donor Eligibility Observations Message | A | A | | | | |
| RGR | RGR - Pharmacy dose information query response | A | A | 2.9 | 2.9 | | | |
| O46 | Donor Eligiblity Message | A | A | | | | |
| Q07 | VQQ - Virtual table query | A | A | 2.9 | 2.9 | | | |
| O47 | Donor Request to Collect Message | A | A | | | | |
| Q08 | SPQ - Stored procedure request | A | A | 2.9 | 2.9 | | | |
| O48 | Donation Procedure Message | A | A | | | | |
| Q09 | RQQ - event replay query | A | A | 2.9 | 2.9 | | | |
| O49 | Pharmacy/Treatment Dispense Request Message | A | A | | | | |
| O50 | Pharmacy/Treatment Encoded Order Acknowledgment | A | A | | | | |
| O51 | OSU – Order Status Update | N | N | | | | |
| O52 | OSU – Order Status Update Acknowledgement | N | N | | | | |
| O53 | ORL - General Laboratory Order Acknowledgment Message (Patient Optional) | N | N | | | | |
| O54 | ORL - Laboratory Order Acknowledgment Message – Multiple Order Per Specimen (Patient Optional) | N | N | | | | |
| O55 | ORL - Laboratory Order Acknowledgment Message – Multiple Order Per Container of Specimen (Patient Optional) | N | N | | | | |
| O56 | ORL - Specimen Shipment Centric Laboratory Order Acknowledgment Message (Patient Optional) | N | N | | | | |
| O57 | OMQ- General Order Message with Document Payload | B | B | | | | |
| O58 | ORX - General Order Message with Document Payload Acknowledgement Message | N | N | | | | |
| O59 | OML - Laboratory order for additional work up | N | N | | An example is the IHE LCC profile describes this message in the LAB-7 transaction | An example is the IHE LCC profile describes this message in the LAB-7 transaction | | |
| P01 | BAR/ACK - Add patient accounts | A | A | | | | |
| P02 | BAR/ACK - Purge patient accounts | A | A | | | | |
| P03 | DFT/ACK - Post detail financial transaction | A | A | | | | |
| P04 | QRY/DSP - Generate bill and A/R statements | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| P05 | BAR/ACK - Update account | A | A | | | | |
| P06 | BAR/ACK - End account | A | A | | | | |
| P07 | PEX - Unsolicited initial individual product experience report | A | A | | | | |
| R03 | QRY/DSR Display-oriented results, query/unsol. update (for backward compatibility only) (Replaced by Q05) | A | A | 2.9 | 2.9 | | | |
| P08 | PEX - Unsolicited update individual product experience report | A | A | | | | |
| P09 | SUR - Summary product experience report | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| P10 | BAR/ACK -Transmit Ambulatory Payment Classification(APC) | A | A | | | | |
| R07 | EDR - Enhanced Display Response | A | A | 2.9 | 2.9 | | | |
| P11 | DFT/ACK - Post Detail Financial Transactions - New | A | A | | | | |
| R08 | TBR - Tabular Data Response | A | A | 2.9 | 2.9 | | | |
| P12 | BAR/ACK - Update Diagnosis/Procedure | A | A | | | | |
| PC1 | PPR - PC/ problem add | A | A | | | | |
| R09 | ERP - Event Replay Response | A | A | 2.9 | 2.9 | | | |
| PC2 | PPR - PC/ problem update | A | A | | | | |
| PC3 | PPR - PC/ problem delete | A | A | | | | |
| PC4 | QRY - PC/ problem query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| PC5 | PRR - PC/ problem response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| PC6 | PGL - PC/ goal add | A | A | | | | |
| PC7 | PGL - PC/ goal update | A | A | | | | |
| PC8 | PGL - PC/ goal delete | A | A | | | | |
| PC9 | QRY - PC/ goal query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| PCA | PPV - PC/ goal response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| PCB | PPP - PC/ pathway (problem-oriented) add | A | A | | | | |
| PCC | PPP - PC/ pathway (problem-oriented) update | A | A | | | | |
| PCD | PPP - PC/ pathway (problem-oriented) delete | A | A | | | | |
| PCE | QRY - PC/ pathway (problem-oriented) query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| PCF | PTR - PC/ pathway (problem-oriented) query response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| PCG | PPG - PC/ pathway (goal-oriented) add | A | A | | | | |
| PCH | PPG - PC/ pathway (goal-oriented) update | A | A | | | | |
| PCJ | PPG - PC/ pathway (goal-oriented) delete | A | A | | | | |
| PCK | QRY - PC/ pathway (goal-oriented) query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| PCL | PPT - PC/ pathway (goal-oriented) query response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q01 | QRY/DSR - Query sent for immediate response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q02 | QRY/QCK - Query sent for deferred response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q03 | DSR/ACK - Deferred response to a query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q05 | UDM/ACK - Unsolicited display update message | A | A | | | | |
| Q06 | OSQ/OSR - Query for order status | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q11 | QBP - Query by parameter requesting an RSP segment pattern response | A | A | | | | |
| Q13 | QBP - Query by parameter requesting an RTB - tabular response | A | A | | | | |
| Q15 | QBP - Query by parameter requesting an RDY display response | A | A | | | | |
| Q16 | QSB - Create subscription | A | A | | | | |
| Q17 | QVR - Query for previous events | A | A | | | | |
| Q21 | QBP - Get person demographics | A | A | | | | |
| Q22 | QBP - Find candidates | A | A | | | | |
| Q23 | QBP - Get corresponding identifiers | A | A | | | | |
| Q24 | QBP - Allocate identifiers | A | A | | | | |
| Q25 | QBP - Personnel Information by Segment Query | A | A | | | | |
| Q26 | ROR - Pharmacy/treatment order response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q27 | RAR - Pharmacy/treatment administration information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q28 | RDR - Pharmacy/treatment dispense information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q29 | RER - Pharmacy/treatment encoded order information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q30 | RGR - Pharmacy/treatment dose information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| Q31 | QBP Query Dispense history | A | A | | | | |
| Q32 | Find Candidates including Visit Information | A | A | | | | |
| Q33 | QBP - Get Donor Record Candidates | A | A | | | | |
| Q34 | QBP - Get Donor Record | A | A | | | | |
| R01 | ORU/ACK - Unsolicited transmission of an observation message | A | A | | | | |
| R02 | QRY - Query for results of observation | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| R04 | ORF - Response to query; transmission of requested observation | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| R21 | OUL - Unsolicited laboratory observation | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| R22 | OUL - Unsolicited Specimen Oriented Observation Message | A | A | | | | |
| R23 | OUL - Unsolicited Specimen Container Oriented Observation Message | A | A | | | | |
| R24 | OUL - Unsolicited Order Oriented Observation Message | A | A | | | | |
| R25 | OPU - Unsolicited Population/Location-Based Laboratory Observation Message | A | A | | | | |
| R26 | OSM - Unsolicited Specimen Shipment Manifest Message | A | A | | | | |
| R30 | ORU - Unsolicited Point-Of-Care Observation Message Without Existing Order - Place An Order | A | A | | | | |
| R31 | ORU - Unsolicited New Point-Of-Care Observation Message - Search For An Order | A | A | | | | |
| R32 | ORU - Unsolicited Pre-Ordered Point-Of-Care Observation | A | A | | | | |
| R33 | ORA - Observation Report Acknowledgement | A | A | | | | |
| R40 | ORU - Unsolicited Report Alarm | A | A | | | | |
| R41 | Observation Report Alert Acknowledgement | A | A | | | | |
| R42 | ORU – Unsolicited Device Event Observation Message | N | N | | | | |
| R43 | ORU – Unsolicited Patient-Device Association Observation Message | N | N | | | | |
| ROR | ROR - Pharmacy prescription order query response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| S01 | SRM/SRR - Request new appointment booking | A | A | | | | |
| S02 | SRM/SRR - Request appointment rescheduling | A | A | | | | |
| S03 | SRM/SRR - Request appointment modification | A | A | | | | |
| S04 | SRM/SRR - Request appointment cancellation | A | A | | | | |
| S05 | SRM/SRR - Request appointment discontinuation | A | A | | | | |
| S06 | SRM/SRR - Request appointment deletion | A | A | | | | |
| S07 | SRM/SRR - Request addition of service/resource on appointment | A | A | | | | |
| S08 | SRM/SRR - Request modification of service/resource on appointment | A | A | | | | |
| S09 | SRM/SRR - Request cancellation of service/resource on appointment | A | A | | | | |
| S10 | SRM/SRR - Request discontinuation of service/resource on appointment | A | A | | | | |
| S11 | SRM/SRR - Request deletion of service/resource on appointment | A | A | | | | |
| S12 | SIU/ACK - Notification of new appointment booking | A | A | | | | |
| S13 | SIU/ACK - Notification of appointment rescheduling | A | A | | | | |
| S14 | SIU/ACK - Notification of appointment modification | A | A | | | | |
| S15 | SIU/ACK - Notification of appointment cancellation | A | A | | | | |
| S16 | SIU/ACK - Notification of appointment discontinuation | A | A | | | | |
| S17 | SIU/ACK - Notification of appointment deletion | A | A | | | | |
| S18 | SIU/ACK - Notification of addition of service/resource on appointment | A | A | | | | |
| S19 | SIU/ACK - Notification of modification of service/resource on appointment | A | A | | | | |
| S20 | SIU/ACK - Notification of cancellation of service/resource on appointment | A | A | | | | |
| S21 | SIU/ACK - Notification of discontinuation of service/resource on appointment | A | A | | | | |
| S22 | SIU/ACK - Notification of deletion of service/resource on appointment | A | A | | | | |
| S23 | SIU/ACK - Notification of blocked schedule time slot(s) | A | A | | | | |
| S24 | SIU/ACK - Notification of opened ("unblocked") schedule time slot(s) | A | A | | | | |
| S25 | SQM/SQR - Schedule query message and response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| S26 | SIU/ACK Notification that patient did not show up for schedule appointment | A | A | | | | |
| S27 | SIU/ACK - Broadcast Notification of Scheduled Appointments | A | A | | | | |
| S28 | SLR/SLS - Request new sterilization lot | A | A | | | | |
| S29 | SLR/SLS - Request Sterilization lot deletion | A | A | | | | |
| S30 | STI/STS - Request item | A | A | | | | |
| S31 | SDR/SDS - Request anti-microbial device data | A | A | | | | |
| S32 | SMD/SMS - Request anti-microbial device cycle data | A | A | | | | |
| S33 | STC/ACK - Notification of sterilization configuration | A | A | | | | |
| S34 | SLN/ACK - Notification of sterilization lot | A | A | | | | |
| S35 | SLN/ACK - Notification of sterilization lot deletion | A | A | | | | |
| S36 | SDN/ACK - Notification of anti-microbial device data | A | A | | | | |
| S37 | SCN/ACK - Notification of anti-microbial device cycle data | A | A | | | | |
| S38 | Containers Prepared for Specimen Collection | N | N | | | | |
| S39 | Specimen Collection Successful | N | N | | | | |
| S40 | Specimen Collection Unsuccessful | N | N | | | | |
| S41 | Specimen Departed | N | N | | | | |
| S42 | Specimen Arrived | N | N | | | | |
| S43 | Specimen Accepted | N | N | | | | |
| S44 | Specimen Rejected | N | N | | | | |
| S45 | Specimen Re-identified | N | N | | | | |
| S46 | Specimen De-identified | N | N | | | | |
| S47 | Specimen Sent to Archive | N | N | | | | |
| S48 | Specimen Retrieved from Archive | N | N | | | | |
| S49 | Specimen Disposed of | N | N | | | | |
| S50 | Specimen Procedure Step Successful , with Derived Specimen(s) | N | N | | | | |
| S51 | Specimen Procedure Step Successful, no Derived Specimen(s) | N | N | | | | |
| S52 | Specimen Procedure Step Unsuccessful | N | N | | | | |
| T01 | MDM/ACK - Original document notification | A | A | | | | |
| T02 | MDM/ACK - Original document notification and content | A | A | | | | |
| T03 | MDM/ACK - Document status change notification | A | A | | | | |
| T04 | MDM/ACK - Document status change notification and content | A | A | | | | |
| T05 | MDM/ACK - Document addendum notification | A | A | | | | |
| T06 | MDM/ACK - Document addendum notification and content | A | A | | | | |
| T07 | MDM/ACK - Document edit notification | A | A | | | | |
| T08 | MDM/ACK - Document edit notification and content | A | A | | | | |
| T09 | MDM/ACK - Document replacement notification | A | A | | | | |
| T10 | MDM/ACK - Document replacement notification and content | A | A | | | | |
| T11 | MDM/ACK - Document cancel notification | A | A | | | | |
| T12 | QRY/DOC - Document query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| U01 | ESU/ACK - Automated equipment status update | A | A | | | | |
| U02 | ESR/ACK - Automated equipment status request | A | A | | | | |
| U03 | SSU/ACK - Specimen status update | A | A | | | | |
| U04 | SSR/ACK - specimen status request | A | A | | | | |
| U05 | INU/ACK - Automated equipment inventory update | A | A | | | | |
| U06 | INR/ACK - Automated equipment inventory request | A | A | | | | |
| U07 | EAC/ACK - Automated equipment command | A | A | | | | |
| U08 | EAR/ACK - Automated equipment response | A | A | | | | |
| U09 | EAN/ACK - Automated equipment notification | A | A | | | | |
| U10 | TCU/ACK - Automated equipment test code settings update | A | A | | | | |
| U11 | TCR/ACK - Automated equipment test code settings request | A | A | | | | |
| U12 | LSU/ACK - Automated equipment log/service update | A | A | | | | |
| U13 | LSR/ACK - Automated equipment log/service request | A | A | | | | |
| U14 | INR/ACK – Automated Equipment Inventory Request | A | A | | | | |
| V01 | VXQ - Query for vaccination record | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| V02 | VXX - Response to vaccination query returning multiple PID matches | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| V03 | VXR - Vaccination record response | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| V04 | VXU - Unsolicited vaccination record update | A | A | | | | |
| Varies | MFQ/MFR - Master files query (use event same as asking for e.g., M05 - location) | D | D | | | | |
| W01 | ORU - Waveform result, unsolicited transmission of requested information | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |
| W02 | QRF - Waveform result, response to query | D | D | | Deprecated | Deprecated | Deprecated | Deprecated | |