HL7 Workbench
Beta
v2.4
Message Structures
ADT_A18
HL7 v2.x
Parser
Sign in
ADT_A18
ADT_A18
6 segments · 1 events
...
2.3.1
May
1999
2.4
Oct
2000
2.5
Aug
2003
...
Message Structure
Message Structure
6 segments
Tree
Grammar
R
Required
O
Optional
Choice
MSH
R
1
EVN
R
1
PID
R
1
PD1
O
1
MRG
R
1
PV1
R
1
Used by Events:
A18
ADT/ACK - Merge patient information