HL7 Workbench
Beta
v2.1
HL7 v2.x
Parser
Sign in
HL7 v2.1
Published December 1992
2.1
Dec
1992
2.2
Nov
1994
2.3
Apr
1997
...
38
Segments
23
Data Types
434
Data Elements
105
Tables
37
Events
16
Message Types
69
Structures
Most used in v2.1
Structural usage across the specification — not popularity, arithmetic.
Segments
— in N of 69 structures
MSH
MESSAGE HEADER
69
MSA
MESSAGE ACKNOWLEDGMENT
35
PID
PATIENT IDENTIFICATION
29
PV1
PATIENT VISIT
29
ERR
ERROR
27
EVN
EVENT TYPE
27
DG1
DIAGNOSIS
13
DSC
CONTINUATION POINTER
8
Tables
— referenced by N data elements
0010
PHYSICIAN ID
8
0079
LOCATION
7
0061
CHECK DIGIT SCHEME
6
0001
SEX
3
0063
RELATIONSHIP
3
0108
QUERY RESULTS LEVEL
2
0116
BED STATUS
2
0018
PATIENT TYPE
2
Data types
— used by N fields
ST
string data
127
ID
CODED VALUE
112
NM
numeric
47
TS
time stamp
29
CM
CM
20
CN
composite ID number and name
20
DT
DATE
19
SI
SET ID
14