National Provider Identifier - Not matched.
Group code
CO or PI
Category
Credentialing/Enrollment
Risk level
High
Appealable
Yes
Common RARC pairings
RARCs (Remittance Advice Remark Codes) provide the specific reason detail alongside CARC 208 on the 835 electronic remittance. These are the RARCs seen most often with this CARC.
| RARC | Meaning |
|---|---|
| N31 | Missing/incomplete/invalid prescribing provider identifier. |
| N77 | Missing/incomplete/invalid designated provider number. |
| N253 | Missing/incomplete/invalid attending provider primary identifier. |
| N255 | Missing/incomplete/invalid billing provider taxonomy. |
| N257 | Missing/incomplete/invalid billing provider/supplier primary identifier. |
| N258 | Missing/incomplete/invalid billing provider/supplier address. |
| N262 | Missing/incomplete/invalid operating provider primary identifier. |
| N265 | Missing/incomplete/invalid ordering provider primary identifier. |
See the full resolution workflow for CARC 208
Members of the EDI-Code Intelligence Lab get the step-by-step rework path, appeal language, root-cause drivers, and prevention checklist for every CARC and RARC pairing, plus payer-specific quirks.
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