HL7 v2.3.1 Vocabulary
0.2.0 - ci-build

HL7 v2.3.1 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v231/ and changes regularly. See the Directory of published versions

ValueSet: Event (2.3.1 - 1.3.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/ValueSet/hl7VSevent Version: 1.3.0
Active as of 2026-03-13 Computable Name: Hl7VSevent
Other Identifiers: OID:2.16.840.1.113883.21.4, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/ValueSet/v2-0003

Copyright/Legal: HL7 Inc., 2026

Concepts specifying the trigger event for Version 2.x interface messages.

References

This value set is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

Logical Definition (CLD)

 

Expansion

Expansion performed internally based on codesystem Event (2.3.1 - 1.3.0) v1.3.0 (CodeSystem)

This value set contains 189 concepts

SystemCodeDisplay (en)InactiveDefinitionstatusJSONXML
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A01ADT/ACK - Admit/visit notificationADT/ACK - Admit/visit notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A02ADT/ACK - Transfer a patientADT/ACK - Transfer a patient
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A03ADT/ACK - Discharge/end visitADT/ACK - Discharge/end visit
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A04ADT/ACK - Register a patientADT/ACK - Register a patient
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A05ADT/ACK - Pre-admit a patientADT/ACK - Pre-admit a patient
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A06ADT/ACK - Change an outpatient to an inpatientADT/ACK - Change an outpatient to an inpatient
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A07ADT/ACK - Change an inpatient to an outpatientADT/ACK - Change an inpatient to an outpatient
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A08ADT/ACK - Update patient informationADT/ACK - Update patient information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A09ADT/ACK - Patient departing - trackingADT/ACK - Patient departing - tracking
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A10ADT/ACK - Patient arriving - trackingADT/ACK - Patient arriving - tracking
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A11ADT/ACK - Cancel admit/visit notificationADT/ACK - Cancel admit/visit notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A12ADT/ACK - Cancel transferADT/ACK - Cancel transfer
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A13ADT/ACK - Cancel discharge/end visitADT/ACK - Cancel discharge/end visit
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A14ADT/ACK - Pending admitADT/ACK - Pending admit
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A15ADT/ACK - Pending transferADT/ACK - Pending transfer
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A16ADT/ACK - Pending dischargeADT/ACK - Pending discharge
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A17ADT/ACK - Swap patientsADT/ACK - Swap patients
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A18ADT/ACK - Merge patient informationADT/ACK - Merge patient information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A19QRY/ADR - Patient queryQRY/ADR - Patient query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A20ADT/ACK - Bed status updateADT/ACK - Bed status update
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A21ADT/ACK - Patient goes on a “leave of absence”ADT/ACK - Patient goes on a “leave of absence”
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A22ADT/ACK - Patient returns from a “leave of absence”ADT/ACK - Patient returns from a “leave of absence”
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A23ADT/ACK - Delete a patient recordADT/ACK - Delete a patient record
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A24ADT/ACK - Link patient informationADT/ACK - Link patient information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A25ADT/ACK - Cancel pending dischargeADT/ACK - Cancel pending discharge
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A26ADT/ACK - Cancel pending transferADT/ACK - Cancel pending transfer
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A27ADT/ACK - Cancel pending admitADT/ACK - Cancel pending admit
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A28ADT/ACK - Add person informationADT/ACK - Add person information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A29ADT/ACK - Delete person informationADT/ACK - Delete person information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A30ADT/ACK - Merge person informationADT/ACK - Merge person information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A31ADT/ACK - Update person informationADT/ACK - Update person information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A32ADT/ACK - Cancel patient arriving - trackingADT/ACK - Cancel patient arriving - tracking
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A33ADT/ACK - Cancel patient departing - trackingADT/ACK - Cancel patient departing - tracking
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A34ADT/ACK - Merge patient information - patient ID onlyADT/ACK - Merge patient information - patient ID only
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A35ADT/ACK - Merge patient information - account number onlyADT/ACK - Merge patient information - account number only
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A36ADT/ACK - Merge patient information - patient ID and account numberADT/ACK - Merge patient information - patient ID and account number
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A37ADT/ACK - Unlink patient informationADT/ACK - Unlink patient information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A38ADT/ACK - Cancel pre-admitADT/ACK - Cancel pre-admit
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A39ADT/ACK - Merge person – patient IDADT/ACK - Merge person – patient ID
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A40ADT/ACK - Merge patient - patient identifier listADT/ACK - Merge patient - patient identifier list
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A41ADT/ACK - Merge account - patient account numberADT/ACK - Merge account - patient account number
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A42ADT/ACK - Merge visit - visit numberADT/ACK - Merge visit - visit number
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A43ADT/ACK - Move patient information – patient identifier listADT/ACK - Move patient information – patient identifier list
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A44ADT/ACK - Move account information - patient account numberADT/ACK - Move account information - patient account number
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A45ADT/ACK - Move visit information - visit numberADT/ACK - Move visit information - visit number
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A46ADT/ACK - Change patient IDADT/ACK - Change patient ID
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A47ADT/ACK - Change patient identifier listADT/ACK - Change patient identifier list
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A48ADT/ACK - Change alternate patient IDADT/ACK - Change alternate patient ID
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A49ADT/ACK - Change patient account numberADT/ACK - Change patient account number
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A50ADT/ACK - Change visit numberADT/ACK - Change visit number
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  A51ADT/ACK - Change alternate visit IDADT/ACK - Change alternate visit ID
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C01CRM - Register a patient on a clinical trialCRM - Register a patient on a clinical trial
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C02CRM - Cancel a patient registration on clinical trial (for clerical mistakes only)CRM - Cancel a patient registration on clinical trial (for clerical mistakes only)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C03CRM - Correct/update registration informationCRM - Correct/update registration information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C04CRM - Patient has gone off a clinical trialCRM - Patient has gone off a clinical trial
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C05CRM - Patient enters phase of clinical trialCRM - Patient enters phase of clinical trial
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C06CRM - Cancel patient entering a phase (clerical mistake)CRM - Cancel patient entering a phase (clerical mistake)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C07CRM - Correct/update phase informationCRM - Correct/update phase information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C08CRM - Patient has gone off phase of clinical trialCRM - Patient has gone off phase of clinical trial
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C09CSU - Automated time intervals for reporting, like monthlyCSU - Automated time intervals for reporting, like monthly
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C10CSU - Patient completes the clinical trialCSU - Patient completes the clinical trial
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C11CSU - Patient completes a phase of the clinical trialCSU - Patient completes a phase of the clinical trial
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  C12CSU - Update/correction of patient order/result informationCSU - Update/correction of patient order/result information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  CNQQRY/EQQ/SPQ/VQQ/RQQ - Cancel queryQRY/EQQ/SPQ/VQQ/RQQ - Cancel query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I01RQI/RPI - Request for insurance informationRQI/RPI - Request for insurance information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I02RQI/RPL - Request/receipt of patient selection display listRQI/RPL - Request/receipt of patient selection display list
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I03RQI/RPR - Request/receipt of patient selection listRQI/RPR - Request/receipt of patient selection list
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I04RQD/RPI - Request for patient demographic dataRQD/RPI - Request for patient demographic data
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I05RQC/RCI - Request for patient clinical informationRQC/RCI - Request for patient clinical information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I06RQC/RCL - Request/receipt of clinical data listingRQC/RCL - Request/receipt of clinical data listing
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I07PIN/ACK - Unsolicited insurance informationPIN/ACK - Unsolicited insurance information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I08RQA/RPA - Request for treatment authorization informationRQA/RPA - Request for treatment authorization information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I09RQA/RPA - Request for modification to an authorizationRQA/RPA - Request for modification to an authorization
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I10RQA/RPA - Request for resubmission of an authorizationRQA/RPA - Request for resubmission of an authorization
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I11RQA/RPA - Request for cancellation of an authorizationRQA/RPA - Request for cancellation of an authorization
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I12REF/RRI - Patient referralREF/RRI - Patient referral
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I13REF/RRI - Modify patient referralREF/RRI - Modify patient referral
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I14REF/RRI - Cancel patient referralREF/RRI - Cancel patient referral
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  I15REF/RRI - Request patient referral statusREF/RRI - Request patient referral status
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M01MFN/MFK - Master file not otherwise specified (for backward compatibility only)MFN/MFK - Master file not otherwise specified (for backward compatibility only)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M02MFN/MFK - Master file - staff practitionerMFN/MFK - Master file - staff practitioner
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M03MFN/MFK - Master file - test/observation (for backward compatibility only)MFN/MFK - Master file - test/observation (for backward compatibility only)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M04MFN/MFK - Master files charge descriptionMFN/MFK - Master files charge description
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M05MFN/MFK - Patient location master fileMFN/MFK - Patient location master file
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M06MFN/MFK - Clinical study with phases and schedules master fileMFN/MFK - Clinical study with phases and schedules master file
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M07MFN/MFK - Clinical study without phases but with schedules master fileMFN/MFK - Clinical study without phases but with schedules master file
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M08MFN/MFK - Test/observation (numeric) master fileMFN/MFK - Test/observation (numeric) master file
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M09MFN/MFK - Test/observation (categorical) master fileMFN/MFK - Test/observation (categorical) master file
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M10MFN/MFK - Test /observation batteries master fileMFN/MFK - Test /observation batteries master file
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  M11MFN/MFK - Test/calculated observations master fileMFN/MFK - Test/calculated observations master file
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  O01ORM - Order message (also RDE, RDS, RGV, RAS)ORM - Order message (also RDE, RDS, RGV, RAS)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  O02ORR - Order response (also RRE, RRD, RRG, RRA)ORR - Order response (also RRE, RRD, RRG, RRA)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P01BAR/ACK - Add patient accountsBAR/ACK - Add patient accounts
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P02BAR/ACK - Purge patient accountsBAR/ACK - Purge patient accounts
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P03DFT/ACK - Post detail financial transactionDFT/ACK - Post detail financial transaction
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P04QRY/DSP – Generate bill and A/R statementsQRY/DSP – Generate bill and A/R statements
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P05BAR/ACK – Update accountBAR/ACK – Update account
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P06BAR/ACK - End accountBAR/ACK - End account
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P07PEX - Unsolicited initial individual product experience reportPEX - Unsolicited initial individual product experience report
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P08PEX - Unsolicited update individual product experience reportPEX - Unsolicited update individual product experience report
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  P09SUR - Summary product experience reportSUR - Summary product experience report
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC1PPR - PC/ Problem AddPPR - PC/ Problem Add
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC2PPR - PC/ Problem UpdatePPR - PC/ Problem Update
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC3PPR - PC/ Problem DeletePPR - PC/ Problem Delete
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC4QRY - PC/ Problem QueryQRY - PC/ Problem Query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC5PRR - PC/ Problem ResponsePRR - PC/ Problem Response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC6PGL - PC/ Goal AddPGL - PC/ Goal Add
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC7PGL - PC/ Goal UpdatePGL - PC/ Goal Update
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC8PGL - PC/ Goal DeletePGL - PC/ Goal Delete
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PC9QRY - PC/ Goal QueryQRY - PC/ Goal Query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCAPPV - PC/ Goal ResponsePPV - PC/ Goal Response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCBPPP - PC/ Pathway (Problem-Oriented) AddPPP - PC/ Pathway (Problem-Oriented) Add
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCCPPP - PC/ Pathway (Problem-Oriented) UpdatePPP - PC/ Pathway (Problem-Oriented) Update
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCDPPP - PC/ Pathway (Problem-Oriented) DeletePPP - PC/ Pathway (Problem-Oriented) Delete
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCEQRY - PC/ Pathway (Problem-Oriented) QueryQRY - PC/ Pathway (Problem-Oriented) Query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCFPTR - PC/ Pathway (Problem-Oriented) Query ResponsePTR - PC/ Pathway (Problem-Oriented) Query Response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCGPPG - PC/ Pathway (Goal-Oriented) AddPPG - PC/ Pathway (Goal-Oriented) Add
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCHPPG - PC/ Pathway (Goal-Oriented) UpdatePPG - PC/ Pathway (Goal-Oriented) Update
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCJPPG - PC/ Pathway (Goal-Oriented) DeletePPG - PC/ Pathway (Goal-Oriented) Delete
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCKQRY - PC/ Pathway (Goal-Oriented) QueryQRY - PC/ Pathway (Goal-Oriented) Query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  PCLPPT - PC/ Pathway (Goal-Oriented) Query ResponsePPT - PC/ Pathway (Goal-Oriented) Query Response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q01QRY/DSR - Query sent for immediate responseQRY/DSR - Query sent for immediate response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q02QRY/QCK - Query sent for deferred responseQRY/QCK - Query sent for deferred response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q03DSR/ACK - Deferred response to a queryDSR/ACK - Deferred response to a query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q04EQQ – Embedded query language queryEQQ – Embedded query language query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q05UDM/ACK - Unsolicited display update messageUDM/ACK - Unsolicited display update message
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q06OSQ/OSR - Query for order statusOSQ/OSR - Query for order status
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q07VQQ – Virtual table queryVQQ – Virtual table query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q08SPQ – Stored procedure requestSPQ – Stored procedure request
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  Q09RQQ – event replay queryRQQ – event replay query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R01ORU/ACK - Unsolicited transmission of an observation messageORU/ACK - Unsolicited transmission of an observation message
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R02QRY - Query for results of observationQRY - Query for results of observation
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R03QRY/DSR Display-oriented results, query/unsol. update (for backward compatibility only)QRY/DSR Display-oriented results, query/unsol. update (for backward compatibility only)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R04ORF - Response to query; transmission of requested observationORF - Response to query; transmission of requested observation
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R05QRY/DSR - query for display resultsQRY/DSR - query for display results
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R06UDM - unsolicited update/display resultsUDM - unsolicited update/display results
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R07EDR – enhanced display responseEDR – enhanced display response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R08TBR – tabular data responseTBR – tabular data response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  R09ERP – event replay responseERP – event replay response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  RARRAR - Pharmacy administration information query responseRAR - Pharmacy administration information query response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  RDRRDR - Pharmacy dispense information query responseRDR - Pharmacy dispense information query response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  RERRER - Pharmacy encoded order information query responseRER - Pharmacy encoded order information query response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  RGRRGR - Pharmacy dose information query responseinactiveRGR - Pharmacy dose information query responseinactive
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  RORR0R - Pharmacy prescription order query responseR0R - Pharmacy prescription order query response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S01SRM/SRR - Request new appointment bookingSRM/SRR - Request new appointment booking
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S02SRM/SRR - Request appointment reschedulingSRM/SRR - Request appointment rescheduling
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S03SRM/SRR - Request appointment modificationSRM/SRR - Request appointment modification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S04SRM/SRR - Request appointment cancellationSRM/SRR - Request appointment cancellation
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S05SRM/SRR - Request appointment discontinuationSRM/SRR - Request appointment discontinuation
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S06SRM/SRR - Request appointment deletionSRM/SRR - Request appointment deletion
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S07SRM/SRR - Request addition of service/resource on appointmentSRM/SRR - Request addition of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S08SRM/SRR - Request modification of service/resource on appointmentSRM/SRR - Request modification of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S09SRM/SRR - Request cancellation of service/resource on appointmentSRM/SRR - Request cancellation of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S10SRM/SRR - Request discontinuation of service/resource on appointmentSRM/SRR - Request discontinuation of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S11SRM/SRR - Request deletion of service/resource on appointmentSRM/SRR - Request deletion of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S12SIU/ACK - Notification of new appointment bookingSIU/ACK - Notification of new appointment booking
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S13SIU/ACK - Notification of appointment reschedulingSIU/ACK - Notification of appointment rescheduling
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S14SIU/ACK - Notification of appointment modificationSIU/ACK - Notification of appointment modification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S15SIU/ACK - Notification of appointment cancellationSIU/ACK - Notification of appointment cancellation
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S16SIU/ACK - Notification of appointment discontinuationSIU/ACK - Notification of appointment discontinuation
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S17SIU/ACK - Notification of appointment deletionSIU/ACK - Notification of appointment deletion
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S18SIU/ACK - Notification of addition of service/resource on appointmentSIU/ACK - Notification of addition of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S19SIU/ACK - Notification of modification of service/resource on appointmentSIU/ACK - Notification of modification of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S20SIU/ACK - Notification of cancellation of service/resource on appointmentSIU/ACK - Notification of cancellation of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S21SIU/ACK - Notification of discontinuation of service/resource on appointmentSIU/ACK - Notification of discontinuation of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S22SIU/ACK - Notification of deletion of service/resource on appointmentSIU/ACK - Notification of deletion of service/resource on appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S23SIU/ACK - Notification of blocked schedule time slot(s)SIU/ACK - Notification of blocked schedule time slot(s)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S24SIU/ACK - Notification of opened (“unblocked”) schedule time slot(s)SIU/ACK - Notification of opened (“unblocked”) schedule time slot(s)
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S25SQM/SQR - Schedule query message and responseSQM/SQR - Schedule query message and response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  S26SIU/ACK Notification that patient did not show up for schedule appointmentSIU/ACK Notification that patient did not show up for schedule appointment
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T01MDM/ACK - Original document notificationMDM/ACK - Original document notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T02MDM/ACK - Original document notification and contentMDM/ACK - Original document notification and content
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T03MDM/ACK - Document status change notificationMDM/ACK - Document status change notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T04MDM/ACK - Document status change notification and contentMDM/ACK - Document status change notification and content
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T05MDM/ACK - Document addendum notificationMDM/ACK - Document addendum notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T06MDM/ACK - Document addendum notification and contentMDM/ACK - Document addendum notification and content
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T07MDM/ACK - Document edit notificationMDM/ACK - Document edit notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T08MDM/ACK - Document edit notification and contentMDM/ACK - Document edit notification and content
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T09MDM/ACK - Document replacement notificationMDM/ACK - Document replacement notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T10MDM/ACK - Document replacement notification and contentMDM/ACK - Document replacement notification and content
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T11MDM/ACK - Document cancel notificationMDM/ACK - Document cancel notification
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  T12QRY/DOC - Document queryQRY/DOC - Document query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  V01VXQ - Query for vaccination recordVXQ - Query for vaccination record
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  V02VXX - Response to vaccination query returning multiple PID matchesVXX - Response to vaccination query returning multiple PID matches
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  V03VXR - Vaccination record responseVXR - Vaccination record response
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  V04VXU - Unsolicited vaccination record updateVXU - Unsolicited vaccination record update
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  W01ORU - Waveform result, unsolicited transmission of requested informationORU - Waveform result, unsolicited transmission of requested information
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  W02QRF - Waveform result, response to queryQRF - Waveform result, response to query
http://terminology.hl7.org/v2plusvocab/CodeSystem/event  X01PEX - Product experienceinactiveinactive

Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance)
Display The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code