Mental Health Billing Services for Therapists: 7 Easy Checks
Mental health billing services for therapists are outside companies that handle the insurance side of a practice. They send claims to payers, post what comes back, and chase what does not pay. You keep the clinical work and the documentation. This guide shows what to hand off, what stays with you, and seven checks to run before you sign.
What mental health billing services for therapists actually do
A billing service covers the work between the session and the payment. It checks coverage, prepares and submits the claim, posts the payer’s payment, works denials, and reports what was paid. Credentialing, the process of enrolling you with a payer, is a separate job that usually has to be in place before in-network claims will pay.
| Task | Who usually owns it |
|---|---|
| Verify benefits before the first session | Service, or you, if agreed in writing (see insurance verification and eligibility checks) |
| Write notes and choose the service you delivered | You |
| Build and submit the claim | Service |
| Post payments and read the remittance | Service (see how to read an ERA) |
| Work denials and underpayments | Service, with your input on documentation |
| Collect the client’s share at the visit | You, following your written policy (the client’s share comes from the payer’s remittance) |
| Payer enrollment | Separate task (see credentialing) |
What do mental health billing services do for a private practice?
Mental health billing services for therapists take over the claim cycle so you stop doing it between sessions. A good service submits clean claims, follows up on unpaid ones, and sends you a report you can read. It does not decide what you document or which code fits the visit. Psychiatrists should confirm the service bills an evaluation and management (E/M) visit together with a psychotherapy add-on code, since prescribers bill differently from psychotherapists.
Rules your service has to follow, by payer type
Every payer sets its own claim rules, so mental health billing services for therapists need to know each one. Ask how it tracks filing deadlines for the payers you use.
Private payers
For mental health billing services for therapists, each commercial plan sets its own filing window, claim edits and appeal deadlines. These sit in your contract and the payer’s provider manual. If you are out of network, the rules differ again. Our comparison of in-network and out-of-network credentialing shows the split.
Medicare and Medicaid
Under Original Medicare, the law requires the provider to file claims for covered services, and Medicare.gov says claims must be filed within 12 months. The Centers for Medicare & Medicaid Services (CMS) describes the paper CMS-1500 form and the electronic 837P file in its MLN booklet on Medicare billing (December 2025). Medicare expects initial claims to go in electronically, with limited exceptions, such as some small practices. Medicaid is run state by state, so its deadlines and forms are not the same as Medicare’s.
State rules
Filing windows, Medicaid managed care plans and appeal rights differ by state. Ask whether the service already bills in your state. Do not assume a rule from another state applies to you.
The HIPAA contract you need before any data moves
Mental health billing services for therapists handle protected health information, so HIPAA treats the company as a business associate. The federal definition at 45 CFR 160.103 names billing among the functions that can make a company a business associate. HHS explains that the HIPAA rules generally require a written contract between you and each business associate. Get a signed business associate agreement before you share a single client record, and ask your counsel to review it.
Seven checks before you hire mental health billing services
When you compare mental health billing services for therapists, use the same seven questions with every company, so you compare like with like. Write down the answers. If a company will not put an answer in writing, treat that as an answer.
| Check | What to ask |
|---|---|
| 1. Specialty | Do you bill only mental and behavioral health? Which psychotherapy and E/M codes do you submit every week? |
| 2. Contract and HIPAA | Can I see the service agreement and business associate agreement before I commit? |
| 3. Fees | How are you paid, and what does that cover? Get it in writing, including what costs extra. |
| 4. Credentialing | Do you handle payer enrollment, or do I need someone else? Who submits updates? |
| 5. Reports | What do I receive each month? Ask for a sample, such as the monthly paysheet report. |
| 6. Denials and underpayments | Who works them, and how do I see the result? See our guide to underpayments. |
| 7. Exit | If I leave, what do I get back: claim history, payer portal access, and reports? |
What to do Monday morning
- List every claim still unpaid, with its date of service and payer.
- Pull your payer contracts and note each filing window.
- Write down the billing tasks you do each week, then mark the ones you want to hand off.
- Ask two or three services the seven checks, and request a sample report and the business associate agreement.
- Pick a start date and check your clean claim rate before and after, so you can see whether the change worked.
The short version: mental health billing services for therapists
Mental health billing services for therapists take over claims, payment posting and denial follow-up while you keep documentation and clinical decisions. Check specialty, contract, fees, credentialing, reports, denials and exit terms, and sign a HIPAA business associate agreement first.
How MCM South helps
MCM South Medical Billing Service, LLC bills exclusively for mental and behavioral health. We work with psychotherapists and psychiatrists in solo and medium-size practices, and we bill out-of-network claims for clients.
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Related reading
Ready to hand off the billing side? We can talk through your practice.
FAQ
Should a solo therapist use a billing service or billing software?
Software gives you tools, but you still do the billing work. A service does the work for you. Choose based on how much billing time you want to keep, and know that you stay responsible for your documentation either way.
Does a billing service need a HIPAA business associate agreement?
Yes, in practice. A billing service handles protected health information for you, and the federal definition of a business associate names billing as a function. HHS says the HIPAA rules generally require a written contract with each business associate. Have counsel review the agreement.
Does a billing service also handle credentialing?
Some do and some do not. Credentialing, which enrolls you with a payer, is a separate job from billing claims. Ask who does it, and who updates your records when something changes.
Can a billing service bill out-of-network claims?
Many can, but ask. Out-of-network claims work differently from in-network ones, so confirm the service handles them and how it reports them. MCM South bills out-of-network claims for clients.
Where MCM South works
MCM South Medical Billing Service, LLC works with psychotherapists and psychiatrists in our ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois. We serve solo and medium-size practices that bill mental and behavioral health. Founder Michael Williams has worked with insurance payers in all 50 states. Browse the state and regional billing guides for rules that vary by state, or see our billing services.
This post is operational guidance for billing, not legal advice. Rules change, so confirm with the payer or your counsel.
