Official CARC description: “Patient cannot be identified as our insured.” Here’s what it actually means, why it fires, and how to get the claim paid.
The payer can't match the person on the claim to a member. Almost always a data hygiene issue — ID typos, name changes, or the wrong plan's card scanned at intake.
Liability group: CO = Contractual Obligation — the provider absorbs it — the amount cannot be billed to the patient. If the denial is wrong, the money is recovered by correcting or appealing the claim, not by balance-billing.
Re-scan the card; verify ID, name spelling, DOB against the 271 response
Correct and resubmit — this is not an appeal
No match anywhere: run a coverage-discovery check, then patient outreach
Tighten front-desk card capture (photo both sides, verify at every visit)
No appeal path — only correction. Protect timely filing by documenting the original submission while you chase the right identity/payer.
Fill in the denial facts — use placeholders, never real patient data (the letter keeps [PATIENT NAME]-style fields so you can merge real details privately). A payer-ready draft with an enclosure checklist comes back in ~20 seconds.
Your appeal letter draft will appear here.
Patient cannot be identified as our insured. In practice: The payer can't match the person on the claim to a member. Almost always a data hygiene issue — ID typos, name changes, or the wrong plan's card scanned at intake.
CO stands for Contractual Obligation — the provider absorbs it — the amount cannot be billed to the patient. If the denial is wrong, the money is recovered by correcting or appealing the claim, not by balance-billing.
No appeal path — only correction. Protect timely filing by documenting the original submission while you chase the right identity/payer.