| |
6.1 MSH-Message
Segment Header
|
Seq
|
Element Name
|
Req
|
Type
|
Len
|
Comments
|
|
0
|
Segment ID (MSH)
|
R
|
ID
|
3
|
"MSH"
|
|
1
|
Field Separator (FS)
|
R
|
AN
|
1
|
This is used to identify separator char “|”
|
|
2
|
Encoding Characters
|
R
|
AN
|
4
|
^ ~ \ &
|
|
3
|
Sending Application (SA)
|
NU
|
AN
|
15
|
Not used
|
|
4
|
Sending Facility (SF)
|
NU
|
AN
|
20
|
Not used
|
|
5
|
Receiving Application (RA)
|
NU
|
AN
|
15
|
Not used
|
|
6
|
Receiving Facility (RF)
|
NU
|
AN
|
20
|
Not used
|
|
7
|
Date/Time of Message (TOM)
|
O
|
AN
|
15
|
YYYYMMDDhhmm[ss]
|
|
8
|
Security (SEC)
|
NU
|
AN
|
40
|
Not used
|
|
9
|
Message Type (MT)
|
R
|
AN
|
7
|
ADT – Admit, Discharge, Transfer Message
ACK – General Acknowledgment Message
|
|
10
|
Message Control ID (MCID)
|
R
|
AN
|
20
|
|
|
11
|
Processing ID (PID)
|
R
|
NU
|
1
|
P
|
|
12
|
Version ID (VID)
|
R
|
AN
|
8
|
HL7 standard version being used.
HL7 2.x Version
|
|
13
|
Sequence Number (SEQ)
|
NU
|
AN
|
15
|
Not used
|
|
14
|
Continuation Pointer
|
NU
|
AN
|
180
|
Not used
|
|
15
|
Accept Acknowledgment Type
|
NU
|
AN
|
2
|
Not used
|
|
16
|
Application Acknowledgment Type
|
NU
|
AN
|
2
|
Not used
|
|
17
|
County
Code |
NU
|
AN
|
2
|
Not
used |
|
R = Required, CR = Conditionally Required,
O = Optional, NU = Not Used, N = Numeric,
AN = Alpha/Numeric, ID = Segment Identification
|
6.2 MSA-Message
Acknowledgment Segment
The MSA
acknowledges receipt of incoming messages.
|
Seq
|
Element Name
|
Req
|
Type
|
Len
|
Comments
|
|
0
|
Segment ID (MSA)
|
R
|
ID
|
3
|
"MSA"
|
|
1
|
Acknowledgment Code (AC)
|
NU
|
NU
|
2
|
Not used
|
|
2
|
Message Control ID (MCID)
|
R
|
AN
|
20
|
ID of the message from the sending system sent as the
MCID field in the MSH segment.
|
|
3
|
Text Message (TM)
|
NU
|
AN
|
80
|
Not used
|
|
4
|
Expected Sequence Number (ESN)
|
NU
|
AN
|
15
|
Not used
|
|
5
|
Delayed Acknowledgment Type (DAT)
|
NU
|
AN
|
1
|
Not used
|
| 6 |
Error
Condition |
NU
|
AN
|
100
|
Not
used |
|
R = Required, CR = Conditionally Required,
O = Optional, NU = Not Used, N = Numeric,
AN = Alpha/Numeric, ID = Segment Identification
|
|
|
 |
|
|
 |
|
