The A12 event is sent when an A02 (transfer a patient) event is canceled, either because of erroneous entry of the A02 event or because of a decision not to transfer the patient after all. PV1-3-assigned patient location must show the location of the patient prior to the original transfer.
The fields included when this message is sent should be the fields pertinent to communicate this event. When other important fields change it is recommended that the A08 (update event be used instead.
The DG1 segment remains in this message for backward compatibility only.
ADT ADT Message Chapter
MSH Message Header 2
EVN Event Type 3
PID Patient Identification 3
[PD1] Additional Demographics 3
PV1 Patient Visit 3
[ PV2 ] Patient Visit - Additional Info. 3
[ { DB1 } ] Disability Information 3
[ { OBX } ] Observation/Result 7
[ DG1 ] Diagnosis Information 6
[ { DRG } ] DRG Information 6
ACK General Acknowledgment Chapter
MSH Message Header 2
MSA Message Acknowledgment 2
[ ERR ] Error 2