Official CARC description: “Precertification/notification/authorization/pre-treatment exceeded.” Here’s what it actually means, why it fires, and how to get the claim paid.
An auth exists but this claim went past it — more visits, more units, or dates outside the window. The auth needs extending, or the excess needs clinical defense.
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.
Track auth utilisation live — request extensions BEFORE visits exhaust
Ask for a retro-extension with progress notes showing continued necessity
Date-window misses: sometimes just an auth-dates correction call
Split billing: within-auth lines paid, excess lines appealed
Appeal the excess with clinical progression documentation — payers grant retro-extensions when notes show necessity continued. Time-barred without notes, so document as you go.
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.
Precertification/notification/authorization/pre-treatment exceeded. In practice: An auth exists but this claim went past it — more visits, more units, or dates outside the window. The auth needs extending, or the excess needs clinical defense.
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.
Appeal the excess with clinical progression documentation — payers grant retro-extensions when notes show necessity continued. Time-barred without notes, so document as you go.