ACK: General Acknowledgment
ACK is the reply that says a message arrived and what happened to it. MSA-1 carries the acknowledgment code and MSA-2 echoes the control ID of the message being answered.
Recognising ACK messages
The standard names ACK without giving it a structure, so there is no MSH-9 value to show for it. How to use these specifications explains what MSH-9 carries.
Message structures
ACK takes 0 structures.
Trigger events
The trigger event is the real-world thing that made the message get sent. ACK defines 114.
| Event | Name | Structure |
|---|---|---|
| A01 | Admit/Visit Notification | |
| A02 | Transfer a Patient | |
| A03 | Discharge/End Visit | |
| A04 | Register a Patient | |
| A05 | Pre-Admit a Patient | |
| A06 | Change an Outpatient to an Inpatient | |
| A07 | Change an Inpatient to an Outpatient | |
| A08 | Update Patient Information | |
| A09 | Patient Departing - Tracking | |
| A10 | Patient Arriving - Tracking | |
| A11 | Cancel Admit / Visit Notification | |
| A12 | Cancel Transfer | |
| A13 | Cancel Discharge / End Visit | |
| A14 | Pending Admit | |
| A15 | Pending Transfer | |
| A16 | Pending Discharge | |
| A17 | Swap Patients | |
| A18 | Merge Patient Information | |
| A20 | Bed Status Update | |
| A21 | Patient Goes on a Leave of Absence | |
| A22 | Patient Returns From a Leave of Absence | |
| A23 | Delete a Patient Record | |
| A24 | Link Patient Information | |
| A25 | Cancel Pending Discharge | |
| A26 | Cancel Pending Transfer | |
| A27 | Cancel Pending Admit | |
| A28 | Add Person or Patient Information | |
| A29 | Delete Person Information | |
| A30 | Merge Person Information | |
| A31 | Update Person Information | |
| A32 | Cancel Patient Arriving - Tracking | |
| A33 | Cancel Patient Departing - Tracking | |
| A34 | Merge Patient Information - Patient ID Only | |
| A35 | Merge Patient Information - Account Number Only | |
| A36 | A36 | |
| A37 | Unlink Patient Information | |
| A38 | Cancel Pre-Admit | |
| A39 | Merge Person - Patient ID | |
| A40 | Merge Patient - Patient Identifier List | |
| A41 | Merge Account - Patient Account Number | |
| A42 | Merge Visit - Visit Number | |
| A43 | Move Patient Information - Patient Identifier List | |
| A44 | Move Account Information - Patient Account Number | |
| A45 | Move Visit Information - Visit Number | |
| A46 | Change Patient ID | |
| A47 | Change Patient Identifier List | |
| A48 | Change Alternate Patient ID | |
| A49 | Change Patient Account Number | |
| A50 | Change Visit Number | |
| A51 | Change Alternate Visit ID | |
| A52 | Cancel Leave of Absence for a Patient | |
| A53 | Cancel Patient Returns from a Leave of Absence | |
| A54 | Change Attending Doctor | |
| A55 | Cancel Change Attending Doctor | |
| A60 | Update Adverse Reaction Information | |
| A61 | Change Consulting Doctor | |
| A62 | Cancel Change Consulting Doctor | |
| B01 | Add Personnel Record | |
| B02 | Update Personnel Record | |
| B03 | Delete Personnel Record | |
| B04 | Activate Practicing Person | |
| B05 | Deactivate Practicing Person | |
| B06 | Terminate Practicing Person | |
| B07 | Grant Certificate/Permission | |
| B08 | Revoke Certificate/Permission | |
| I07 | Unsolicited Insurance Information | |
| J01 | cancel query/acknowledge message | |
| J02 | cancel subscription/acknowledge message | |
| N02 | Application Management Data Message | |
| P01 | Add Patient Account | |
| P02 | Purge Patient Accounts | |
| P03 | Post Detail Financial Transactions | |
| P05 | Update Account | |
| P06 | End Account | |
| P10 | P10 | |
| P11 | Post Detail Financial Transactions - Expanded | |
| P12 | Update Diagnosis/Procedure | |
| PC1 | PC1 | |
| PC6 | PC6 | |
| PCB | PCB | |
| PCG | PCG | |
| Q03 | deferred response to a query | |
| Q05 | unsolicited display update message | |
| Q16 | Create subscription | |
| Q17 | query for previous events | |
| R01 | Unsolicited Observation Message | |
| R30 | R30 | |
| R31 | R31 | |
| R32 | Unsolicited Pre-Ordered Point-Of-Care Observation | |
| S12 | S12 | |
| T01 | Original Document Notification | |
| T02 | Original Document Notification and Content | |
| T03 | Document Status Change Notification | |
| T04 | T04 | |
| T05 | Document Addendum Notification | |
| T06 | Document Addendum Notification and Content | |
| T07 | Document Edit Notification | |
| T08 | Document Edit Notification and Content | |
| T09 | Document Replacement Notification | |
| T10 | Document Replacement Notification and Content | |
| T11 | Document Cancel Notification | |
| U01 | Automated Equipment Status Update | |
| U02 | Automated Equipment Status Request | |
| U03 | Specimen Status Update | |
| U04 | Specimen Status Request | |
| U05 | Automated Equipment Inventory Update | |
| U06 | Automated Equipment Inventory Request | |
| U07 | Automated Equipment Command | |
| U08 | Automated Equipment Response | |
| U09 | Automated Equipment Notification | |
| U10 | U10 | |
| U11 | U11 | |
| U12 | Automated Equipment Log/Service Update | |
| U13 | Automated Equipment Log/Service Request |