AAA03 — Reject Reason Code (X12 element 901)
79 — Invalid Participant Identification
Draft — pending verification
This reference entry has not yet been verified against its authoritative source (X12 005010X217 TR3 / element 901 code list — verify against licensed copy). Do not rely on it for production configuration until this notice is removed.
How 79 is used
Returned in AAA03 at the level identifying the failing party. Check ISA/GS envelope IDs and the payer/UMO identifiers in the transaction against the companion guide.
Example
A 278 sent with an outdated UMO identifier after a payer consolidates review entities returns AAA03 = 79.
Where it lives in the transaction
79 is a value of AAA03 — Reject Reason Code (X12 element 901), carried in the AAA (Request Validation), 278 response — returned at the loop level where the problem was found of the 278 Health Care Services Review — Response (005010X217). For the payer-side view of how PA Bridge normalizes these codes across X12 and FHIR intake, see the articles section.