A change has been done at the visit identifier level. That is, a PV1-19 - Visit Number has been found to be incorrect and has been changed.
An A50 event is used to signal a change of an incorrectly assigned visit number value. The "incorrect source visit number" value is stored in the MRG segment (MRG-5 - Prior Visit Number) and is to be changed to the "correct target visit number" value stored in the PV1 segment (PV1-19 - Visit Number).
Each superior identifier associated with this visit number identifier level, i.e. PID-3/MRG-1 and PID-18/MRG-3 should have the same value in both the PID and MRG segments.
See sections 3.5.2, "Merging patient/person information," and 3.5.2.1.4, "Change identifier," for a discussion of issues related to the implementation of change messages.
The fields included when this message is sent should be the fields pertinent to communicate this event. When demographic data in other fields change, it is recommended that the A08 (update patient information) event be used in conjunction with this message.
Segment | Cardinality | Implement | Status |
---|---|---|---|
ADT^A50^ADT_A50 | |||
MSH Message Header |
[1..1] | SHALL | |
ARV Access Restriction |
|||
SFT Software Segment |
|||
UAC User Authentication Credential Segment |
[0..1] | ||
EVN Event Type |
[1..1] | SHALL | |
PID Patient Identification |
[1..1] | SHALL | |
PD1 Patient Additional Demographic |
[0..1] | ||
MRG Merge Patient Information |
[1..1] | SHALL | |
PV1 Patient Visit |
[1..1] | SHALL |
MSH-15 | MSH-16 | Immediate ACK | Application Ack |
---|---|---|---|
Blank | Blank | - | ADT^A51^ADT_A50 |
Blank | Blank | - | ADT^A50^ADT_A50 |
NE | NE | - | - |
NE | NE | - | - |
AL, SU, ER | NE | ACK^A51^ACK | - |
AL, SU, ER | NE | ACK^A50^ACK | - |
NE | AL, SU, ER | - | ACK^A51^ACK |
NE | AL, SU, ER | - | ACK^A50^ACK |
AL, SU, ER | AL, SU, ER | ACK^A51^ACK | ACK^A51^ACK |
AL, SU, ER | AL, SU, ER | ACK^A50^ACK | ACK^A50^ACK |