CO-206 — NPI missing
Claim-adjustment reason code 206 · typically reported as CO-206
What it means
A required National Provider Identifier (billing, ordering, or referring) is absent from the claim.
Why DME claims hit it
- Ordering-provider NPI dropped during data entry or 837 mapping
- Atypical-provider edge cases
How to fix it
- Populate the missing NPI in the correct loop/segment and resubmit
Appeal posture
No — data fix.
Related denial codes
CO-16 — Claim lacks information or has a submission errorCO-183 — Referring provider not eligible to referCO-184 — Ordering provider not eligible to order/prescribe
Looking up an item instead? Browse the HCPCS code library for fee schedule amounts and PA flags.
Turn denials into recovered revenue
MyMedi-AI maps every remit code to its fix, tracks appeal deadlines, and drafts appeal letters with the right documentation checklist.
Start free trial Run a CMS-0057-F readiness check