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3.2.22 ADT/ACK - patient returns from a "leave of absence" (event A22)

An A22 event is sent to notify systems that an admitted patient has returned to the healthcare institution after a temporary "leave of absence." It is used for systems in which a bed is still assigned to the patient, and it takes their current admitted patient activities off of "hold" status. For example, it is used to notify dietary services and laboratory systems when the patient returns from a weekend trip to his/her home.

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 patient information) event be used instead.

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
ACK     General Acknowledgment     Chapter
MSH     Message Header         2
MSA      Message Acknowledgment       2
[ ERR ]    Error            2

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