Reference

Denial codes, in plain English

What each code means, whether it is worth appealing, and what to do next. 50 pages across 41 codes, written the way a billing manager would explain them.

Most searched

The codes billers look up most, by measured search volume.

CO 97 · CO 96 · OA 23 · PR 204 · CO 109 · CO 197 · CO 45 · CO 50

Contractual and patient responsibility

Prior authorisation

Missing information

Timely filing

Medical necessity

Bundling and NCCI

Coding

Units and frequency

Benefit maximums

Eligibility

Coordination of benefits

Duplicates

Non-covered

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