Events
288 trigger events in HL7 v2.4
§2.16.2 Event Type Table:Trigger events represent real-world occurrences that initiate HL7 message exchange. Each event (e.g., A01 for patient admission, O01 for new order) defines when a specific message type should be sent and what information it should contain.
ADT^A01
ADT/ACK - Admit / visit notification
ADT_A01
ADT^A02
ADT/ACK - Transfer a patient
ADT_A02
ADT^A03
ADT/ACK - Discharge/end visit
ADT_A03
ADT^A04
ADT/ACK - Register a patient
ADT_A01
ADT^A05
ADT/ACK - Pre-admit a patient
ADT_A05
ADT^A06
ADT/ACK - Change an outpatient to an inpatient
ADT_A06
ADT^A07
ADT/ACK - Change an inpatient to an outpatient
ADT_A06
ADT^A08
ADT/ACK - Update patient information
ADT_A01
ADT^A09
ADT/ACK - Patient departing - tracking
ADT_A09
ADT^A10
ADT/ACK - Patient arriving - tracking
ADT_A09
ADT^A11
ADT/ACK - Cancel admit/visit notification
ADT_A09
ADT^A12
ADT/ACK - Cancel transfer
ADT_A09
ADT^A13
ADT/ACK - Cancel discharge/end visit
ADT_A01
ADT^A14
ADT/ACK - Pending admit
ADT_A05
ADT^A15
ADT/ACK - Pending transfer
ADT_A15
ADT^A16
ADT/ACK - Pending discharge
ADT_A16
ADT^A17
ADT/ACK - Swap patients
ADT_A17
ADT^A18
ADT/ACK - Merge patient information
ADT_A18
QRY^A19
QRY/ADR - Patient query
QRY_A19
ADT^A20
ADT/ACK - Bed status update
ADT_A20
ADT^A21
ADT/ACK - Patient goes on a "leave of absence"
ADT_A21
ADT^A22
ADT/ACK - Patient returns from a "leave of absence"
ADT_A21
ADT^A23
ADT/ACK - Delete a patient record
ADT_A21
ADT^A24
ADT/ACK - Link patient information
ADT_A24
ADT^A25
ADT/ACK - Cancel pending discharge
ADT_A21
ADT^A26
ADT/ACK - Cancel pending transfer
ADT_A21
ADT^A27
ADT/ACK - Cancel pending admit
ADT_A21
ADT^A28
ADT/ACK - Add person information
ADT_A05
ADT^A29
ADT/ACK - Delete person information
ADT_A21
ADT^A30
ADT/ACK - Merge person information
ADT_A30
ADT^A31
ADT/ACK - Update person information
ADT_A05
ADT^A32
ADT/ACK - Cancel patient arriving - tracking
ADT_A21
ADT^A33
ADT/ACK - Cancel patient departing - tracking
ADT_A21
ADT^A34
ADT/ACK - Merge patient information - patient ID only
ADT_A30
ADT^A35
ADT/ACK - Merge patient information - account number only
ADT_A30
ADT^A36
ADT/ACK - Merge patient information - patient ID and account number
ADT_A30
ADT^A37
ADT/ACK - Unlink patient information
ADT_A37
ADT^A38
ADT/ACK - Cancel pre-admit
ADT_A38
ADT^A39
ADT/ACK - Merge person - patient ID
ADT_A39
ADT^A40
ADT/ACK - Merge patient - patient identifier list
ADT_A39
ADT^A41
ADT/ACK - Merge account - patient account number
ADT_A39
ADT^A42
ADT/ACK - Merge visit - visit number
ADT_A39
ADT^A43
ADT/ACK - Move patient information - patient identifier list
ADT_A43
ADT^A44
ADT/ACK - Move account information - patient account number
ADT_A43
ADT^A45
ADT/ACK - Move visit information - visit number
ADT_A45
ADT^A46
ADT/ACK - Change Patient ID
ADT_A30
ADT^A47
ADT/ACK - Change patient identifier list
ADT_A30
ADT^A48
ADT/ACK - Change alternate patient ID
ADT_A30
ADT^A49
ADT/ACK - Change patient account number
ADT_A30
ADT^A50
ADT/ACK - Change visit number
ADT_A50
ADT^A51
ADT/ACK - Change alternate visit ID
ADT_A50
ADT^A52
ADT/ACK - Cancel leave of absence for a patient
ADT_A52
ADT^A53
ADT/ACK - Cancel patient returns from a leave of absence
ADT_A52
ADT^A54
ADT/ACK - Change attending doctor
ADT_A54
ADT^A55
ADT/ACK - Cancel change attending doctor
ADT_A52
ADT^A60
ADT/ACK - Update allergy information
ADT_A60
ADT^A61
ADT/ACK - Change consulting doctor
ADT_A61
ADT^A62
ADT/ACK - Cancel change consulting doctor
ADT_A61
PMU^B01
PMU/ACK - Add personnel record
PMU_B01
PMU^B02
PMU/ACK - Update personnel record
PMU_B01
PMU^B03
PMU/ACK - Delete personnel re cord
PMU_B03
PMU^B04
PMU/ACK - Active practicing person
PMU_B04
PMU^B05
PMU/ACK - Deactivate practicing person
PMU_B04
PMU^B06
PMU/ACK - Terminate practicing person
PMU_B04
CRM^C01
CRM - Register a patient on a clinical trial
CRM_C01
CRM^C02
CRM - Cancel a patient registration on clinical trial (for clerical mistakes only)
CRM_C01
CRM^C03
CRM - Correct/update registration information
CRM_C01
CRM^C04
CRM - Patient has gone off a clinical trial
CRM_C01
CRM^C05
CRM - Patient enters phase of clinical trial
CRM_C01
CRM^C06
CRM - Cancel patient entering a phase (clerical mistake)
CRM_C01
CRM^C07
CRM - Correct/update phase information
CRM_C01
CRM^C08
CRM - Patient has gone off phase of clinical trial
CRM_C01
CSU^C09
CSU - Automated time intervals for reporting, like monthly
CSU_C09
CSU^C10
CSU - Patient completes the clinical trial
CSU_C09
CSU^C11
CSU - Patient completes a phase of the clinical trial
CSU_C09
CSU^C12
CSU - Update/correction of patient order/result information
CSU_C09
RQI^I01
RQI/RPI - Request for insurance information
RQI_I01
RQI^I02
RQI/RPL - Request/receipt of patient selection display list
RQI_I01
RQI^I03
RQI/RPR - Request/receipt of patient selection list
RQI_I01
RQP^I04
RQD/RPI - Request for patient demographic data
RQP_I04
RQC^I05
RQC/RCI - Request for patient clinical information
RQC_I05
RQC^I06
RQC/RCL - Request/receipt of clinical data listing
RQC_I05
PIN^I07
PIN/ACK - Unsolicited insurance information
RQI_I01
RQA^I08
RQA/RPA - Request for treatment authorization information
RQA_I08
RQA^I09
RQA/RPA - Request for modification to an authorization
RQA_I08
RQA^I10
RQA/RPA - Request for resubmission of an authorization
RQA_I08
RQA^I11
RQA/RPA - Request for cancellation of an authorization
RQA_I08
REF^I12
REF/RRI - Patient referral
REF_I12
REF^I13
REF/RRI - Modify patient referral
REF_I12
REF^I14
REF/RRI - Cancel patient referral
REF_I12
REF^I15
REF/RRI - Request patient referral status
REF_I12
QCN^J01
QCN/ACK - Cancel query/acknowledge message
QCN_J01
QSX^J02
QSX/ACK - Cancel subscription/acknowledge message
QCN_J01
NUL^K11
query by parameter/segment pattern response
NUL
NUL^K13
query by parameter/tabular response
NUL
NUL^K15
query by parameter/display response
NUL
NUL^K21
RSP - Get person demographics response
NUL
NUL^K22
RSP - Find candidates response
NUL
NUL^K23
RSP - Get corresponding identifiers response
NUL
NUL^K24
RSP - Allocate identifiers response
NUL
NUL^K25
RSP - Personnel Information by Segment Response
NUL
MFN^M01
MFN/MFK - Master file not otherwise specified (for backward compatibility only)
MFN_M01
MFN^M02
MFN/MFK - Master file - Staff Practitioner
MFN_M02
MFN^M03
MFN/MFK - Master file - Test/Observation (for backward compatibility only)
MFN_M03
MFN^M04
MFN/MFK - Master files charge description
MFN_M04
MFN^M05
MFN/MFK - Patient location master file
MFN_M05
MFN^M06
MFN/MFK - Clinical study with phases and schedules master file
MFN_M06
MFN^M07
MFN/MFK - Clinical study without phases but with schedules master file
MFN_M07
MFN^M08
MFN/MFK - Test/observation (Numeric) master file
MFN_M08
MFN^M09
MFN/MFK - Test/Observation (Categorical) master file
MFN_M09
MFN^M10
MFN/MFK - Test /observation batteries master file
MFN_M10
MFN^M11
MFN/MFK - Test/calculated observations master file
MFN_M11
MFN^M12
MFN/MFK - Master file notification message
MFN_M12
NMQ^N01
NMQ/NMR - Application management query message
NMQ_N01
NMD^N02
NMD/ACK - Application management data message (unsolicited)
NMD_N02
ORM^O01
ORM - Order message (also RDE, RDS, RGV, RAS)
ORM_O01
ORR^O02
ORR - Order response (also RRE, RRD, RRG, RRA)
ORR_O02
OMD^O03
OMD - Diet order
OMD_O03
NUL^O04
ORD - Diet order acknowledgement
NUL
OMS^O05
OMS - Stock requisition order
OMS_O05
NUL^O06
ORS - Stock requisition acknowledgement
NUL
OMN^O07
OMN - Non-stock requisition order
OMN_O07
NUL^O08
ORN - Non-stock requisition acknowledgement
NUL
OMP^O09
OMP - Pharmacy/treatment order
OMP_O09
NUL^O10
ORP - Pharmacy/treatment order acknowledgement
NUL
RDE^O11
RDE - Pharmacy/treatment encoded order
RDE_O11
NUL^O12
RRE - Pharmacy/treatment encoded order acknowledgement
NUL
RDS^O13
RDS - Pharmacy/treatment dispense
RDS_O13
NUL^O14
RRD - Pharmacy/treatment dispense acknowledgement
NUL
RGV^O15
RGV - Pharmacy/treatment give
RGV_O15
NUL^O16
RRG - Pharmacy/treatment give acknowledgement
NUL
RAS^O17
RAS - Pharmacy/treatment administration
RAS_O17
NUL^O18
RRA - Pharmacy/treatment administration acknowledgement
NUL
OMG^O19
OMG - General clinical order
OMG_O19
NUL^O20
ORG/ORL - General clinical order response
NUL
OML^O21
OML - Laboratory order
OML_O21
NUL^O22
ORL - General Laboratory Order Acknowledgment Message
NUL
BAR^P01
BAR/ACK - Add patient accounts
BAR_P01
BAR^P02
BAR/ACK - Purge patient accounts
BAR_P02
DFT^P03
DFT/ACK - Post detail financial transaction
DFT_P03
QRY^P04
QRY/DSP - Generate bill and A/R statements
QRY_P04
BAR^P05
BAR/ACK - Update account
BAR_P05
BAR^P06
BAR/ACK - End account
BAR_P06
PEX^P07
PEX - Unsolicited initial individual product experience report
PEX_P07
PEX^P08
PEX - Unsolicited update individual product experience report
PEX_P07
SUR^P09
SUR - Summary product experience report
SUR_P09
BAR^P10
BAR/ACK -Transmit Ambulatory Payment Classification(APC)
BAR_P10
DFT^P11
DFT/ACK - Post detail financial transaction
DFT_P11
PPR^PC1
PPR - PC/ Problem Add
PPR_PC1
PPR^PC2
PPR - PC/ Problem Update
PPR_PC1
PPR^PC3
PPR - PC/ Problem Delete
PPR_PC1
QRY^PC4
PRQ - PC/ Problem Query
QRY_PC4
NUL^PC5
PRR - PC/ Problem Response
NUL
PGL^PC6
PGL - PC/ Goal Add
PGL_PC6
PGL^PC7
PGL - PC/ Goal Update
PGL_PC6
PGL^PC8
PGL - PC/ Goal Delete
PGL_PC6
QRY^PC9
PGQ - PC/ Goal Query
QRY_PC4
NUL^PCA
PGR - PC/ Goal Response
NUL
PPP^PCB
PPP - PC/ Pathway (Problem-Oriented) Add
PPP_PCB
PPP^PCC
PPP - PC/ Pathway (Problem-Oriented) Update
PPP_PCB
PPP^PCD
PPP - PC/ Pathway (Problem-Oriented) Delete
PPP_PCB
QRY^PCE
PTQ - PC/ Pathway (Problem-Oriented) Query
QRY_PC4
NUL^PCF
PTR - PC/ Pathway (Problem-Oriented) Query Response
NUL
PPG^PCG
PPG - PC/ Pathway (Goal-Oriented) Add
PPG_PCG
PPG^PCH
PPG - PC/ Pathway (Goal-Oriented) Update
PPG_PCG
PPG^PCJ
PPG - PC/ Pathway (Goal-Oriented) Delete
PPG_PCG
QRY^PCK
PTU - PC/ Pathway (Goal-Oriented) Query
QRY_PC4
NUL^PCL
PTV - PC/ Pathway (Goal-Oriented) Query Response
NUL
QRY^Q01
QRY/DSR - Query sent for immediate response
QRY_Q01
QRY^Q02
QRY/QCK - Query sent for deferred response
QRY_Q02
DSR^Q03
DSR/ACK - Deferred response to a query
DSR_Q03
EQQ^Q04
EQQ - Embedded query language query
EQQ_Q04
UDM^Q05
UDM/ACK - Unsolicited display update message
UDM_Q05
OSQ^Q06
OSQ/OSR - Query for order status
OSQ_Q06
VQQ^Q07
VQQ - Virtual table query
VQQ_Q07
SPQ^Q08
SPQ - Stored procedure request
SPQ_Q08
RQQ^Q09
RQQ - event replay query
RQQ_Q09
QBP^Q11
query by parameter/segment pattern response
QBP_Q11
QBP^Q13
quey by parameter/tabluar response
QBP_Q13
QBP^Q15
query by parameter/display response
QBP_Q15
QSB^Q16
QSB - Create subscription
QSB_Q16
QVR^Q17
QVR - Query for previous events
QVR_Q17
QBP^Q21
QBP - Get person demographics
QBP_Q21
QBP^Q22
QBP - Find candidates
QBP_Q21
QBP^Q23
QBP - Get corresponding identifiers
QBP_Q21
QBP^Q24
QBP - Allocate identifiers
QBP_Q21
QBP^Q25
QBP - Personnel Information by Segment Query
QBP_Q21
QRY^Q26
pharmacy/treatment order query
QRY_Q01
QRY^Q27
pharmacy/treatment administration information query
QRY_Q01
QRY^Q28
pharmacy/treatment dispense information query
QRY_Q01
QRY^Q29
pharmacy/treatment encoded order information query
QRY_Q01
QRY^Q30
pharmacy/treatment dose information query
QRY_Q01
ORU^R01
ORU/ACK - Unsolicited transmission of an observation message
ORU_R01
QRY^R02
QRY - Query for results of observation
QRY_R02
NUL^R04
ORF - Response to query; transmission of requested observation
NUL
NUL^R07
Enhanced Display Response
NUL
NUL^R08
Tabular Data Response
NUL
NUL^R09
Event Replay Response
NUL
OUL^R21
OUL - Unsolicited laboratory observation
OUL_R21
NUL^RAR
RAR - Pharmacy administration information query response
NUL
NUL^RDR
RDR - Pharmacy dispense information query response
NUL
NUL^RER
RER - Pharmacy encoded order information query response
NUL
NUL^RGR
RGR - Pharmacy dose information query response
NUL
NUL^ROR
ROR - Pharmacy prescription order query response
NUL
SRM^S01
SRM/SRR - Request new appointment booking
SRM_S01
SRM^S02
SRM/SRR - Request appointment rescheduling
SRM_S01
SRM^S03
SRM/SRR - Request appointment modification
SRM_S01
SRM^S04
SRM/SRR - Request appointment cancellation
SRM_S01
SRM^S05
SRM/SRR - Request appointment discontinuation
SRM_S01
SRM^S06
SRM/SRR - Request appointment deletion
SRM_S01
SRM^S07
SRM/SRR - Request addition of service/resource on appointment
SRM_S01
SRM^S08
SRM/SRR - Request modification of service/resource on appointment
SRM_S01
SRM^S09
SRM/SRR - Request cancellation of service/resource on appointment
SRM_S01
SRM^S10
SRM/SRR - Request discontinuation of service/resource on appointment
SRM_S01
SRM^S11
SRM/SRR - Request deletion of service/resource on appointment
SRM_S01
SIU^S12
SIU/ACK - Notification of new appointment booking
SIU_S12
SIU^S13
SIU/ACK - Notification of appointment rescheduling
SIU_S12
SIU^S14
SIU/ACK - Notification of appointment modification
SIU_S12
SIU^S15
SIU/ACK - Notification of appointment cancellation
SIU_S12
SIU^S16
SIU/ACK - Notification of appointment discontinuation
SIU_S12
SIU^S17
SIU/ACK - Notification of appointment deletion
SIU_S12
SIU^S18
SIU/ACK - Notification of addition of service/resource on appointment
SIU_S12
SIU^S19
SIU/ACK - Notification of modification of service/resource on appointment
SIU_S12
SIU^S20
SIU/ACK - Notification of cancellation of service/resource on appointment
SIU_S12
SIU^S21
SIU/ACK - Notification of discontinuation of service/resource on appointment
SIU_S12
SIU^S22
SIU/ACK - Notification of deletion of service/resource on appointment
SIU_S12
SIU^S23
SIU/ACK - Notification of blocked schedule time slot(s)
SIU_S12
SIU^S24
SIU/ACK - Notification of opened ("unblocked") schedule time slot(s)
SIU_S12
SQM^S25
SQM/SQR - Schedule query message and response
SQM_S25
SIU^S26
Notification that patient did not show up for schedule appointment
SIU_S12
MDM^T01
MDM/ACK - Original document notification
MDM_T01
MDM^T02
MDM/ACK - Original document notification and content
MDM_T02
MDM^T03
MDM/ACK - Document status change notification
MDM_T01
MDM^T04
MDM/ACK - Document status change notification and content
MDM_T02
MDM^T05
MDM/ACK - Document addendum notification
MDM_T01
MDM^T06
MDM/ACK - Document addendum notification and content
MDM_T02
MDM^T07
MDM/ACK - Document edit notification
MDM_T01
MDM^T08
MDM/ACK - Document edit notification and content
MDM_T02
MDM^T09
MDM/ACK - Document replacement notification
MDM_T01
MDM^T10
MDM/ACK - Document replacement notification and content
MDM_T02
MDM^T11
MDM/ACK - Document cancel notification
MDM_T01
QRY^T12
QRY/DOC - Document query
QRY_T12
ESU^U01
ESU/ACK - Automated equipment status update
ESU_U01
ESR^U02
ESR/ACK - Automated equipment status request
ESR_U02
SSU^U03
SSU/ACK - Specimen status update
SSU_U03
SSR^U04
SSR/ACK - specimen status request
SSR_U04
INU^U05
INU/ACK - Automated equipment inventory update
INU_U05
INR^U06
INR/ACK - Automated equipment inventory request
INR_U06
EAC^U07
EAC/ACK - Automated equipment command
EAC_U07
EAR^U08
EAR/ACK - Automated equipment response
EAR_U08
EAN^U09
EAN/ACK - Automated equipment notification
EAN_U09
TCU^U10
TCU/ACK - Automated equipment test code settings update
TCU_U10
TCR^U11
TCR/ACK - Automated equipment test code settings request
TCU_U10
LSU^U12
LSU/ACK - Automated equipment log/service update
LSU_U12
LSR^U13
LSR/ACK - Automated equipment log/service request
LSU_U12
VXQ^V01
VXQ - Query for vaccination record
VXQ_V01
NUL^V02
VXX - Response to vaccination query returning multiple PID matches
NUL
NUL^V03
VXR - Vaccination record response
NUL
VXU^V04
VXU - Unsolicited vaccination record update
VXU_V04
QRY^W01
waveform result, unsolicited transmission of requested information
NUL
QRY^W02
waveform result, response to query
NUL
QBP^Z73
Information about Phone Calls
QBP_Z73
NUL^Z74
Information about Phone Calls (response)
NUL
QBP^Z75
Tabular Patient List
QBP_Q13
NUL^Z76
Tabular Patient List (response)
NUL
QBP^Z77
Tabular Patient List
QBP_Q13
NUL^Z78
Tabular Patient List (response)
NUL
QBP^Z79
Dispense Information
QBP_Q15
NUL^Z80
Dispense Information (response)
NUL
QBP^Z81
Dispense History
QBP_Q11
NUL^Z82
Dispense History (response)
NUL
QSB^Z83
ORU Subscription
QSB_Q16
NUL^Z84
Who Am I (response)
NUL
QBP^Z85
Pharmacy Information Comprehensive
QBP_Q11
NUL^Z86
Pharmacy Information Comprehensive (response)
NUL
QBP^Z87
Dispense Information
QBP_Q11
NUL^Z88
Dispense Information (response)
NUL
QBP^Z89
Lab Results History
QBP_Q11
NUL^Z90
Lab Results History (response)
NUL
QBP^Z91
Who Am I
QBP_Q13
NUL^Z92
Who Am I (response)
NUL
QBP^Z93
Tabular Dispense History
QBP_Q13
NUL^Z94
Tabular Dispense History (response)
NUL
QBP^Z95
Tabular Dispense History
QBP_Q13
NUL^Z96
Tabular Dispense History (response)
NUL
QBP^Z97
Dispense History
QBP_Q15
NUL^Z98
Dispense History (response)
NUL
QBP^Z99
Who Am I
QBP_Q13