Mental Health Billing Services

Why Mental Health Billing Follows Different Rules

Behavioral health billing runs on rules the rest of medicine doesn't have: time-based CPT codes where minutes decide payment, session limits and authorization requirements that vary wildly by plan, telehealth policies still in flux, and carve-outs where the patient's mental health benefit is administered by a completely different company than the card in their wallet. Practices that bill therapy like office visits leave money everywhere. Here's what disciplined mental health billing looks like.

Time-Based Codes: The Minutes Are the Money

Psychotherapy codes are selected by documented session time — and the difference between a 45-minute and 60-minute code is real money across a caseload of weekly sessions. Time must be documented per session, not assumed from the calendar slot. Add-on codes for psychotherapy with E/M (for prescribers), interactive complexity, and crisis sessions each have their own time and documentation rules. We audit that documented times support billed codes — protecting both revenue and compliance, because rounded-up minutes are an easy audit finding.

Carve-Outs and Eligibility: Billing the Right Payer the First Time

Mental health benefits are frequently carved out to behavioral health administrators — the member's card says one company, but therapy claims pay through another. Billing the medical payer gets a denial weeks later; meanwhile sessions continue and the balance grows. We verify behavioral health benefits specifically — the carve-out entity, session limits, authorization requirements, and telehealth rules — before the first appointment, not after the first denial. When claims do land at the wrong entity, our CO-109 workflow redirects them fast.

Authorizations and Session Limits

Many plans authorize therapy in blocks — six, twelve, twenty sessions — and quietly deny everything after the block runs out. We track authorized sessions against delivered ones per patient, request continuations before the block exhausts, and flag plans with hard annual limits so the practice and patient can plan. Nothing erodes a therapy practice's finances like discovering ten unauthorized sessions in a denial batch.

Telehealth: The Rules Keep Moving

Teletherapy is now a permanent part of behavioral health, but payer rules haven't settled: place-of-service codes, telehealth modifiers, audio-only policies, and cross-state licensure questions all vary by payer and change year to year. We maintain a per-payer telehealth grid and keep claims aligned with it, so the shift to virtual care doesn't become a denial stream.

Group Practices, Supervision, and Incident-To

Group behavioral health adds another layer: pre-licensed clinicians billing under supervision, incident-to rules that differ between Medicare and commercial payers, and roster management so every clinician is credentialed with every plan they see. Billing a clinician the payer doesn't recognize produces the CO-B7 denials that blindside growing practices. We manage the roster, the supervision billing rules, and the credentialing calendar together.