Electronic claims

We know your time is valuable. Save time and money by enrolling in electronic processing today.

For faster claims processing, providers can now attach supporting documents when submitting electronic claims through self-service. We encourage providers to use the electronic claims process rather than using fax or secure messaging to submit additional documentation.

The TRICARE East Region payer ID is TREST

It will need to be placed in the following data elements within your X12 837 claim files:

  • ISA-08
  • GS-03
  • NM1-09 (with 40 qualifier)

I have a clearinghouse

Providers who use clearinghouses to process their claims need to enroll via Electronic Data Interchange (EDI) express enrollment in order to process claims and set up EFT/ERA.

To set-up EDI, providers (or groups where applicable):

  • Must enroll for electronic claims submission
  • Must sign, and have on file, a Trading Partner Claims Agreement (“Agreement”) prior to submission of electronic claims
  • Must complete a self-registration process that includes an initial registration and the necessary request forms and business agreement(s)
  • Should sign up for EFT/ERA to ensure faster payment
Enroll now


I do not have a clearinghouse

Providers who do not use a clearinghouse to process their claims can submit claims through provider self-service.