ISA Interchange Control Header

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

Position: ISA-01 · Element: I01 · Name: Authorization Information Qualifier · Type: Identifier (ID) · Requirement: Mandatory · Min: 2 · Max: 2 · Repeat: -

Code to identify the type of information in the Authorization Information.

Position: ISA-02 · Element: I02 · Name: Authorization Information · Type: String (AN) · Requirement: Mandatory · Min: 10 · Max: 10 · Repeat: -

Information used for additional identification or authorization of the sender or the data in the interchange. The type of information is set by the Authorization Information Qualifier.

Position: ISA-03 · Element: I03 · Name: Security Information Qualifier · Type: Identifier (ID) · Requirement: Mandatory · Min: 2 · Max: 2 · Repeat: -

Code to identify the type of information in the Security Information.

Position: ISA-04 · Element: I04 · Name: Security Information · Type: String (AN) · Requirement: Mandatory · Min: 10 · Max: 10 · Repeat: -

This is used for identifying the security information about the sender or the data in the interchange. The type of information is set by the Security Information Qualifier.

Position: ISA-05 · Element: I05 · Name: Interchange ID Qualifier · Type: Identifier (ID) · Requirement: Mandatory · Min: 2 · Max: 2 · Repeat: -

Qualifier to designate the system/method of code structure used to designate the sender or receiver ID element being qualified.

Position: ISA-06 · Element: I06 · Name: Interchange Sender ID · Type: String (AN) · Requirement: Mandatory · Min: 15 · Max: 15 · Repeat: -

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 number in the sender ID element.

Position: ISA-07 · Element: I05 · Name: Interchange ID Qualifier · Type: Identifier (ID) · Requirement: Mandatory · Min: 2 · Max: 2 · Repeat: -

Qualifier to designate the system/method of code structure used to designate the sender or receiver ID element being qualified.

Position: ISA-08 · Element: I07 · Name: Interchange Receiver ID · Type: String (AN) · Requirement: Mandatory · Min: 15 · Max: 15 · Repeat: -

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.

Position: ISA-09 · Element: I08 · Name: Interchange Date · Type: Date (DT) · Requirement: Mandatory · Min: 6 · Max: 6 · Repeat: -

Date of the interchange.

Position: ISA-10 · Element: I09 · Name: Interchange Time · Type: Time (TM) · Requirement: Mandatory · Min: 4 · Max: 4 · Repeat: -

Time of the interchange.

Position: ISA-11 · Element: I10 · Name: Interchange Control Standards Identifier · Type: Identifier (ID) · Requirement: Mandatory · Min: 1 · Max: 1 · Repeat: -

Code to identify the agency responsible for the control standard used by the message that is enclosed by the interchange header and trailer.

Position: ISA-12 · Element: I11 · Name: Interchange Control Version Number · Type: Identifier (ID) · Requirement: Mandatory · Min: 5 · Max: 5 · Repeat: -

This version number covers the interchange control segments.

Position: ISA-13 · Element: I12 · Name: Interchange Control Number · Type: Numeric (N0) · Requirement: Mandatory · Min: 9 · Max: 9 · Repeat: -

This number uniquely identifies the interchange data to the sender. It is assigned by the sender. Together with the sender ID it uniquely identifies the interchange data to the receiver. It is suggested that the sender, receiver, and all third parties be able to maintain an audit trail of interchanges using this number.

Position: ISA-14 · Element: I13 · Name: Acknowledgment Requested · Type: Identifier (ID) · Requirement: Mandatory · Min: 1 · Max: 1 · Repeat: -

Code sent by the sender to request an interchange acknowledgment.

Position: ISA-15 · Element: I14 · Name: Test Indicator · Type: Identifier (ID) · Requirement: Mandatory · Min: 1 · Max: 1 · Repeat: -

Code to indicate whether data enclosed by this interchange envelope is test or production.

Position: ISA-16 · Element: I15 · Name: Subelement Separator · Type: String (AN) · Requirement: Mandatory · Min: 1 · Max: 1 · Repeat: -

This is a field reserved for future expansion in separating data element subgroups. (In the interest of a migration to international standards, this must be different from the data element separator).