Behavioral Health billing
Behavioral health is billed in minutes, not procedures, and payers audit those minutes. Add carve-out plans, session limits and authorization windows, and a practice can deliver perfect clinical care and still watch a third of its sessions pend.
What actually gets denied
The psychotherapy codes are defined by face-to-face time — roughly 16–37 minutes for 90834 and 38 minutes or more for 90837. Payers profile providers who bill 90837 for nearly every session and ask for records. We flag the pattern before the payer does rather than after a post-payment review.
90833, 90836 and 90838 are add-ons to an evaluation and management service, not standalone therapy codes. Submitted alone or attached to the wrong parent line, they reject as an invalid code combination.
Many behavioral plans authorize a fixed number of sessions in a date window. Sessions delivered past the last authorized unit deny as no-auth and are usually not appealable. We track remaining units per patient and request extensions before the last visit, not after.
90785 and the crisis codes 90839/90840 have narrow definitions. Appended out of habit rather than documented need, they invite recoupment.
Payer behavior
Many commercial members have medical benefits with one payer and behavioral benefits administered by a separate managed behavioral health organization. Sending the claim to the medical payer produces a clean-looking denial that just means wrong address.
POS 02 versus POS 10, and modifier 95 versus GT, are not interchangeable and payers change their rules on their own schedule. We maintain the current rule per payer rather than a single sitewide default.
Group therapy, IOP and PHP have per-diem and per-unit structures that differ by plan and by state Medicaid program.
Documentation traps
A note that says 'therapy session' without duration cannot support a time-based code on audit.
The billed diagnosis has to be supported by the note for that date, not the intake from months earlier.
Associate-level clinicians billed under a supervising provider must meet that payer's supervision and enrollment rules.
Every behavioral health account is staffed by coders who bill this specialty daily. The work spans our full medical billing and revenue cycle management services — coding, claim scrubbing, denial management and A/R recovery — and you can see how engagements are structured on our pricing page. For the full specialty bench, go back to all specialties we bill, or contact us at (555) 555-0142.
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