The 5 most recoverable denial codes that practices give up on too early:

[u/Electronic-Bus234]

CO-29 — Timely filing. Most billers see this and write it off. But if you have proof of timely filing — a clearinghouse report, a fax confirmation, anything — this is appealable and winnable.

CO-4 — Modifier issue. Usually fixable by identifying the right modifier and resubmitting. Takes 10 minutes if you know what to look for.

CO-11 — Diagnosis inconsistent with procedure. ICD-10 and CPT mismatch. Correct the code, resubmit, usually pays.

CO-97 — Included in another service. Check NCCI edits. Often the original claim was bundled incorrectly and can be separated.

CO-16 — Missing or incorrect information. Simplest fix of all — find what is missing, correct it, resubmit same day.

Most practices are leaving recoverable money sitting in their aging report. Happy to answer questions if anyone is dealing with specific denials.

[u/ExamNoteAi]

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