Official CARC description: “Coinsurance amount.” Here’s what it actually means, why it fires, and how to get the claim paid.
The patient's percentage share after the deductible. Pure patient liability — the tasks are verifying the percentage and collecting well, not appealing.
Liability group: PR = Patient Responsibility — the amount can be billed to the patient (deductible, coinsurance, non-covered care) — but only after you verify the denial is correct. Mis-grouped PR denials are a common appeal win.
Verify the percentage matches the plan's benefit summary
Processed OON wrongly? Fix network status — that changes the patient's share
Bill any secondary/Medigap before statementing the patient
Offer card-on-file and estimates at scheduling for chronic-visit patients
Nothing to appeal when the math is right. Dispute only mis-set percentages or wrong network status — both change the patient's share materially.
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.
Coinsurance amount. In practice: The patient's percentage share after the deductible. Pure patient liability — the tasks are verifying the percentage and collecting well, not appealing.
PR stands for Patient Responsibility — the amount can be billed to the patient (deductible, coinsurance, non-covered care) — but only after you verify the denial is correct. Mis-grouped PR denials are a common appeal win.
Nothing to appeal when the math is right. Dispute only mis-set percentages or wrong network status — both change the patient's share materially.