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Coordination of Benefits Agreement

Eligibility File Formats

This page provides new and existing COBA trading partners with files layouts for the following processes:

  • Eligibility EO1 Record Layout
  • Acknowledgement File Layout
  • Eligibility Response File (ERF) Layout

The Drug Coverage Record Layouts are also available.

If you have further questions please contact your EDI rep or contact the COBC at 1-800-999-1118 or TTY/TDD 1-800-318-8782 for the hearing and speech impaired, Monday through Friday, from 9:00 a.m. - 5:00 p.m., Eastern Standard Time, except holidays.


 

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