Look up a payer ID, enroll a trading partner with a clearinghouse, and route 837 transactions to the correct destination

Steps

1. Search the clearinghouse payer directory (available via portal or API from clearinghouses such as Availity, Change Healthcare, or Waystar) using payer name or payer ID to retrieve the canonical electronic payer ID and supported transaction types
2. Verify the payer supports the transaction types you need (837P, 837I, 270, 276, 835) in the directory listing; some payers support only a subset electronically and require paper or portal for others
3. Complete the clearinghouse trading partner enrollment form: provide your NPI (Type 1 individual or Type 2 organizational), Tax ID, billing provider name and address, and the transaction types you intend to submit; submit enrollment and await activation confirmation (typically 1–10 business days)
4. For ERA enrollment (receiving 835 files) complete a separate ERA enrollment with each payer through the clearinghouse; some payers also require a direct CAQH EFT/ERA enrollment form before electronic remittances are delivered
5. Configure your billing system or EDI translator to use the payer's electronic payer ID in ISA08 (interchange receiver ID) and GS03 (functional group receiver) on all outbound transactions; use your clearinghouse's own ISA ID in ISA06 as the submitter
6. Test with a small batch of claims in the clearinghouse's test environment, verify you receive a 999 acceptance and a 277CA, then move to production