Medical Billing for Mental Health: A Plain-English Guide
Medical billing for mental health is the process of getting paid by insurance for therapy, psychiatry, and related services. It follows the same basic path as other medical billing, but the codes, payer rules, and authorization requirements are specific to behavioral health. This plain-English guide explains the process for practice owners.
How is medical billing for mental health different?
Three things set behavioral health apart. First, services are billed by session length and type, so the code depends on what was done and for how long. Second, many plans use a separate company to manage behavioral health benefits, so the claim and authorization rules can differ from medical benefits. Third, employee assistance programs add another payer type. Our behavioral health billing terms define the vocabulary.
The mental health billing process, step by step
- Verify benefits before the first visit.
- Document the session and choose the diagnosis and code.
- Send the claim electronically. See our electronic claims service.
- Receive the payment and explanation of benefits.
- Work denials and send secondary claims. See denial follow-up and secondary claims.
Which codes do mental health practices use most?
Therapists use psychotherapy codes that vary by session length and by whether the client is alone or with family. Psychiatrists bill evaluation and management visits, sometimes with a psychotherapy add-on. Start with our CPT code guides, individual psychotherapy, and psychiatry billing.
Private, Medicare, and state rules differ
Keep three sets of rules apart. Private plans follow their own contracts and policies. Medicare follows federal rules and is processed by a Medicare Administrative Contractor (CMS.gov, checked 10/21/26). State law and state Medicaid programs add a third layer, and they vary by state. Our Medicare behavioral health billing guide and state billing guides cover each layer.
What documentation does a mental health claim need?
A mental health claim is only as strong as the note behind it. Keep the date, the length of the session, the service provided, the diagnosis, and the reason the service was needed. If the plan requires authorization, keep the authorization number and the dates it covers.
Review each payer’s documentation policy, since behavioral health benefits may be run by a separate company with its own rules. When the note, the code, and the authorization agree, the claim is far more likely to be paid the first time.
How MCM South does it
MCM South Medical Billing Service, LLC was founded in 2010 and works only in mental and behavioral health. It serves psychotherapists and psychiatrists in solo and medium-size practices and handles verification, claims, secondary claims, EAP claims, denial follow-up, out-of-network claims, and credentialing. Start with our Who We Serve page, or Get a Free Quote.
Medical billing for mental health FAQ
What is medical billing for mental health?
It is the process of billing insurance for therapy, psychiatry, and related behavioral health services, using codes and payer rules specific to those services.
Why is mental health billing different?
Services are coded by session length and type, benefits are often managed by a separate behavioral health company, and EAP sessions follow employer program rules.
Do Medicare and private insurance follow the same rules?
No. Private plans follow their own contracts, Medicare follows federal rules through a MAC, and state law and Medicaid add more rules that vary by state.
Can I bill mental health claims myself?
Yes, many practices do. The tradeoff is time: verification, claims, and denial follow-up take hours that could go to clients.
Who does MCM South bill for?
MCM South bills for psychotherapists and psychiatrists in solo and medium-size practices. It does not serve hospital systems.
Where MCM South works
MCM South serves practices in our ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina, and Illinois. Plan rules vary by payer and by state, so check each plan before you bill.
