Three Behavioral Health Billing Mistakes That Trigger Audits

Behavioral health has some of the strictest documentation requirements in outpatient billing, and payers have gotten more aggressive about post-payment audits in the last two years. Three patterns drive most of the recoupments we see.

First: time-based codes without documented start and stop times. A 90837 (60-minute psychotherapy) needs the actual minutes, not just the date. Round numbers and missing endpoints are a flag.

Second: copy-forward notes across sessions. Payers run similarity scoring across a patient's chart, and identical language across multiple sessions reads as cloned documentation — even when the care was real.

Third: treatment plan staleness. If the plan on file is more than a year old, or if the documented sessions don't tie back to specific goals on the plan, recoupment risk goes up sharply.