Understand the X12 274 (Healthcare Provider Information) transaction set — it is used to exchange provider demographic, credential, and network affiliation data between provider networks, payers, and credentialing organizations.
Build or receive the ISA/GS envelope with the correct sender/receiver IDs for the trading partner agreement, followed by the ST 274 transaction set identifier.
Populate the PRV (Provider Information) loop with NPI, taxonomy code, and provider type; populate the N3/N4 loops with practice address and the PER loop with contact information.
Include the REF segment for supplemental identifiers (DEA number, state license number, UPIN if applicable) and the DTP segment for effective and termination dates of directory membership.
Transmit via your clearinghouse or direct EDI channel using the agreed transport (AS2, SFTP, or VAN); confirm with a TA1 interchange acknowledgment and a 999 functional acknowledgment.
Process inbound 274 files by parsing each provider loop and upserting records in your directory database using NPI as the primary key.
Known gotchas
The X12 274 is not one of the HIPAA-mandated standard transactions (unlike 837, 835, 270/271); adoption is inconsistent and many payers use proprietary formats or FHIR Plan-Net instead — confirm support before building.
Effective and termination dates in DTP segments govern whether a provider record is active in the directory; incorrect date handling leads to premature removal or retention of provider entries.
The 274 does not carry clinical privileging or credentialing decision data — it is a directory/demographic exchange only; separate credentialing transactions or CAQH data are needed for privileging information.
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp