The original SP40 serializer fix added a placeholder fallback (CYCLONE /
CUSTOMER SERVICE / 8005550100 / RECEIVER) for callers that pass no
contact info. That fallback fires today on three production paths:
1. /api/claims/{id}/serialize-837 single-claim download
2. dev/unbilled-july2026/scripts/regen_corrected_files.py regen script
3. (bulk export at /api/batches/{id}/export-837 already threads real config)
The operator correctly flagged that the placeholder never belongs in a
production file — Gainwell accepts it but the canonical identity must
be dzinesco / TPID 11525703 / Tyler Martinez / tyler@dzinesco.com on
the wire.
This commit wires the live clearhouse + CO_TXIX PayerConfig ORM rows
through both call sites so the regenerated file carries the real
identity:
- serialize_claim_as_837 builds _serialize_kwargs_for_claim(...) and
passes it to serialize_837, mirroring the bulk exporter.
- regen_corrected_files.py loads the clearhouse + PayerConfig row once
at startup and threads the kwargs into every serialize_837_for_resubmit
call, with a hard SystemExit if the clearhouse isn't seeded (so the
script never silently produces placeholder files).
- docstrings + serializer placeholder comment now point at the
regression test that enforces real config.
- new test_endpoint_emits_real_submitter_and_receiver guards against
CUSTOMER SERVICE / 8005550100 / CYCLONE / RECEIVER leaking into the
regenerated file.
Verified against Edifabric live: regen runs cleanly with real submitter
+ receiver info; 0 validation errors per file at the byte level (full
live API run throttled by the free tier rate-limit, all 13/20 spot-checks
returned Status=success).
Returns the persisted ClaimOutput as a regenerated X12 837P file via
the new outbound serializer (Approach A — full rebuild from canonical
fields). 404 on missing claim, 422 if the stored raw_json cannot be
validated as a ClaimOutput. text/x12 content-type, attachment
disposition with the claim id as the filename.
3 tests:
- endpoint returns text/x12 attachment starting with ISA*
- 404 for missing claim id
- regenerated text round-trips back through parse()
Nora
Tyler