NextGen Knowledge Center

Electronic Claims File Structure

Compliance with the Health Insurance Portability and Accountability Act of 1996 (HIPAA) requires the ANSI ASC X12N 837 Health Care Claims (837) transaction for professional claims and/or encounters to contain specific standardized information. The standardization of health care information allows health care providers to submit 837 electronic files within the NextGen In-line Edits environment.

There are three types of 837 electronic files:

  • Professional (1500 claim forms)
  • Institutional (UB claim forms)
  • Dental ADA

Each type has the same basic electronic file structure. The 837 electronic file is structured to deliver control segments of information, which include:

  • Interchange Control Segments
  • Functional Group Control Segments
  • Transaction Control Segments
  • Loop Control Segments
  • Interchange Acknowledgment Control Segments

Each control segment usually has a beginning header label and an ending trailer label. The table below outlines each of the control segments and their identifying labels.

Control SegmentIdentifying Header LabelIdentifying Trailer Label
Interchange EnvelopeISA – Interchange Control HeaderIEA – Interchange Control Trailer
Functional GroupGS – Functional Group HeaderGE – Functional Group Trailer
Transaction SetST – Transaction HeaderSE – Transaction Trailer
Loop Control Segment (Data Segments)LS – Loop HeaderLE – Loop Trailer
Interchange AcknowledgmentTA1 – Interchange AcknowledgmentThere is no identifying trailer label associated with the TA1. The TA1 is a single control segment.