PR — Patient responsibility — this one goes on the patient statement.
So the balance is billable to the patient, provided your advance notice was in order. Check that before the statement goes out. Billing a patient for something you contractually agreed to absorb is the expensive mistake on this code.
The same code, a different prefix. 55 also arrives as CO 55. The reason for the denial is the same. The prefix decides who pays for it, so the next step is not the same. If your remit says CO 55, read that page instead.
Winnable with a clinician. Recoverable on the merits, but somebody clinical has to attest.
Appeal with literature and the payer policy. Low win rate; triage by dollar value.
Where this comes from. This is our own reading of the code, not the payer's and not a copy of the standards text. We classify it from how these denials actually resolve. Where we are unsure, we say so rather than guessing.
Send your denial summary for the last ninety days. Four columns: payer, CARC code, count, billed amount. I will tell you which were winnable and what they were worth.
Send your denial summary No patient data. No BAA. No charge.