ISA Interchange Control Header

To start and identify an interchange of zero or more functional groups and interchange-related control segments

Position
Element
Name
Type
Requirement
Min
Max
Repeat
ISA-01
Authorization Information Qualifier
Identifier (ID)
Mandatory
2
2
-
Code to identify the type of information in the Authorization Information
ISA-02
Authorization Information
String (AN)
Mandatory
10
10
-
Information used for additional identification or authorization of the interchange sender or the data in the interchange; the type of information is set by the Authorization Information Qualifier (I01)
ISA-03
Security Information Qualifier
Identifier (ID)
Mandatory
2
2
-
Code to identify the type of information in the Security Information
ISA-04
Security Information
String (AN)
Mandatory
10
10
-
This is used for identifying the security information about the interchange sender or the data in the interchange; the type of information is set by the Security Information Qualifier (I03)
ISA-05
Interchange ID Qualifier
Identifier (ID)
Mandatory
2
2
-
Qualifier to designate the system/method of code structure used to designate the sender or receiver ID element being qualified
ISA-06
Interchange Sender ID
String (AN)
Mandatory
15
15
-
Identification code published by the sender for other parties to use as the receiver ID to route data to them; the sender always codes this value in the sender ID element
ISA-07
Interchange ID Qualifier
Identifier (ID)
Mandatory
2
2
-
Qualifier to designate the system/method of code structure used to designate the sender or receiver ID element being qualified
ISA-08
Interchange Receiver ID
String (AN)
Mandatory
15
15
-
Identification code published by the receiver of the data; When sending, it is used by the sender as their sending ID, thus other parties sending to them will use this as a receiving ID to route data to them
ISA-09
Interchange Date
Date (DT)
Mandatory
6
6
-
Date of the interchange
ISA-10
Interchange Time
Time (TM)
Mandatory
4
4
-
Time of the interchange
ISA-11
Interchange Control Standards Identifier
Identifier (ID)
Mandatory
1
1
-
Code to identify the agency responsible for the control standard used by the message that is enclosed by the interchange header and trailer
ISA-12
Interchange Control Version Number
Identifier (ID)
Mandatory
5
5
-
This version number covers the interchange control segments
ISA-13
Interchange Control Number
Numeric (N0)
Mandatory
9
9
-
A control number assigned by the interchange sender
ISA-14
Acknowledgment Requested
Identifier (ID)
Mandatory
1
1
-
Code sent by the sender to request an interchange acknowledgment (TA1)
ISA-15
Test Indicator
Identifier (ID)
Mandatory
1
1
-
Code to indicate whether data enclosed by this interchange envelope is test or production
ISA-16
Component Element Separator
String (AN)
Mandatory
1
1
-
This field provides the delimiter used to separate component data elements within a composite data structure; this value must be different than the data element separator and the segment terminator

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