Private Practice Billing Services for Mental Health
Title: Private Practice Billing Services for Mental Health
SEO Title: Private Practice Billing Services for Mental Health
Meta Description: Learn how commercial insurance billing works for mental health private practices, from benefit checks and claims to credentialing and denials.
Category: Billing Services
Author: MCM South Billing Team
Publish Date: Evergreen
Private practice billing services manage the insurance work behind a mental health practice, including checking benefits, submitting claims, and following up on payment. For practices that accept commercial insurance, the work depends on each payer’s contract and plan rules—not one public fee schedule. This guide is for independent psychotherapists, psychiatrists, and small-to-medium practices, not large health systems or hospital departments.
What Private Practice Billing Services Cover
A billing service can support the full claims cycle, from checking eligibility to following up on unpaid claims.
For a commercial-insurance-heavy practice, the work often includes:
- Benefits verification: Check whether the patient’s plan is active, what mental health benefits apply, and whether authorization or referrals are required.
- Carve-out checks: Find out whether a separate behavioral health administrator handles the mental health benefit.
- Claims submission: Send claims with the correct patient, provider, service, and coding details.
- Denial and rejection follow-up: Identify why a claim did not pay, correct issues when appropriate, and submit appeals within the payer’s deadline.
- Secondary claims: Bill a second plan after the primary payer has processed the claim, following coordination-of-benefits rules.
- Credentialing support: Manage applications and payer follow-up so clinicians can seek in-network status.
- EAP billing: Handle Employee Assistance Program claims under the applicable EAP rules, which can differ from a patient’s regular insurance benefit.
A billing partner should understand the difference between psychotherapy claims and psychiatry claims. Psychotherapists commonly bill psychotherapy services. Psychiatrists may bill evaluation and management (E/M) services for medical visits and, when payer rules and documentation support it, add psychotherapy codes to the E/M service. Those claims need careful code and documentation review.
MCM South focuses exclusively on mental and behavioral health billing for solo practitioners and small-to-medium practices. The team handles eligibility checks, claims, denials, credentialing, and payer policy changes so clinicians can spend less time managing billing work.
How Commercial Insurance Billing Differs From Medicare and Medicaid
Commercial reimbursement comes from payer-specific contracts; Medicare and Medicaid follow government program rules.
Commercial plans set reimbursement and claim requirements under their own contracts and product rules. Rates, authorization requirements, appeal deadlines, and network terms can vary by payer, plan, and contract. Confirm the details for the specific plan rather than relying on a rule from another payer or product.
Medicare uses a public fee schedule, and Medicaid follows program rules that vary by state. Those programs are outside this article’s scope. This guide covers commercial insurance, including employer-sponsored and individual private plans—not government payers.
The CPT Codes Commercial Payers Reimburse Most Often
These common behavioral health codes are a starting point for reviewing claims, but a code alone does not determine coverage or payment.
- 90791 — psychiatric diagnostic evaluation.
- 90834 — individual psychotherapy, generally associated with a 45-minute session.
- 90837 — individual psychotherapy, generally associated with a 60-minute session.
- 90847 — family psychotherapy with the patient present.
The AMA’s CPT resources explain CPT code terminology. The CMS Physician Fee Schedule Search provides a Medicare reference, not a commercial reimbursement promise. Commercial rates are negotiated by contract and vary by payer and plan. Confirm them with the payer or review your contract and remittance records.
Psychiatrist billing can involve a different code structure. A psychiatrist may report an E/M service for medical evaluation or medication management and add a psychotherapy code—90833, 90836, or 90838—when the service, documentation, and payer policy support it. These psychotherapy add-on codes are not stand-alone services. Check each payer’s rules for code combinations, time, documentation, and any authorization requirement before submitting a claim.
For a focused comparison of family psychotherapy codes, see 90847 vs. 90846: which pays better?.
Verifying Commercial Benefits and Behavioral Health Carve-Outs
Verify the specific member’s plan before the first appointment; a payer name alone does not tell you who administers behavioral health.
A behavioral health carve-out is an arrangement in which a separate company administers some or all mental health benefits for a health plan. Other plans administer those benefits directly. The arrangement can vary by product line, employer, and member plan—even when the insurance card shows a familiar payer name.
When checking benefits, confirm:
- The member’s coverage is active on the service date.
- The clinician and service location are in network, if the practice expects to bill as in-network.
- The mental health benefit administrator and the correct claim destination.
- Copay, coinsurance, deductible, visit limits, and any authorization or referral requirements.
- Whether the planned service and clinician type are covered under that specific plan.
Record the date, reference number, and source of the verification. A benefits check is not a guarantee of payment. Eligibility, coverage, and claim payment can depend on the plan’s terms and the information submitted on the claim.
Credentialing: In-Network vs. Out-of-Network With Commercial Payers
Credentialing establishes a provider’s qualifications with a payer; contracting sets the terms for participating in its network.
In-network providers have a contract with the payer and generally agree to its rates and billing rules. The patient’s cost-sharing is determined by their plan. Out-of-network clinicians do not have that same network contract. Depending on the plan, the patient may owe more, the plan may reimburse the patient rather than the provider, or out-of-network coverage may not be available.
Credentialing and contracting timelines vary by payer and application. Do not assume a fixed completion date or bill as in-network before the payer confirms the provider’s effective date and terms. Keep CAQH ProView information current when a payer uses it as part of the application process.
Credentialing is provider- and payer-specific. A group’s network status does not automatically establish every clinician’s status. Supervision arrangements and associate billing can also have payer-specific requirements. See MCM South’s overview of billing services for therapists and psychiatrists for more on how requirements can depend on who provides and pays for a service.
What Commercial Parity Law Actually Changes
Federal mental health parity rules address how many health plans apply limits to mental health and substance use benefits compared with medical and surgical benefits.
The Mental Health Parity and Addiction Equity Act (MHPAEA) applies parity requirements to covered plans and benefits. The U.S. Department of Labor’s parity resources explain the law and its enforcement for many employer-sponsored plans.
Parity does not mean every service is covered, every clinician is in network, or all reimbursement rates must match. Plan type and specific requirements matter. This section is educational, not a legal interpretation. For a question about a plan’s compliance or a dispute with real legal or financial exposure, consult the payer, a billing consultant, or qualified legal counsel.
Denials, Appeals, and Secondary Claims With Commercial Payers
A denial needs a reason-specific response, and each payer sets its own filing and appeal rules.
Common commercial claim problems include inactive coverage, incorrect member or provider details, a missing authorization, a code or modifier mismatch, a service that is excluded under the plan, or a claim filed after the payer’s deadline. A rejection often means the claim did not pass an initial processing check; a denial means the payer processed it but did not approve payment as billed. Read the notice or electronic remittance advice before deciding what to do next.
A practical follow-up process is to:
- Match the claim to the remittance or denial notice.
- Identify the payer’s stated reason and any correction or appeal deadline.
- Compare the claim with the eligibility record, authorization, contract, and supporting documentation.
- Correct and resubmit when the payer identifies a correctable claim error; use the appeal process when disputing a coverage or payment decision.
- Track the submission date, reference number, and outcome.
Do not assume a standard appeal window applies. Check the specific payer’s instructions and contract. When a patient has two plans, submit the secondary claim after the primary payer processes the claim, and include the primary payer’s explanation of benefits as required. An EAP authorization or payment arrangement is not automatically the same as secondary insurance coverage; verify how the specific EAP and plan should be billed.
What should a private practice therapist look for in a billing partner?
Choose a billing partner that can explain how it will manage the commercial claims your practice actually submits.
Before signing, ask how the service handles benefits verification, carve-outs, claim corrections, denials, appeals, secondary claims, and payer-specific credentialing. Ask how it reports work and outstanding balances, what tasks are included in its fee, and how your practice can review claim status. A partner should be clear about what it can handle and what requires action from the clinician or practice.
A practical evaluation checklist
- Experience with commercial behavioral health billing, not only general medical billing.
- Familiarity with both psychotherapy claims and psychiatry E/M-plus-add-on billing.
- A clear process for tracking denials, appeal deadlines, and unresolved claims.
- Transparent reporting that shows claim status and follow-up activity.
- A written description of services, responsibilities, fees, and communication expectations.
- Experience with practices similar in size and clinician mix to yours.
- A clear boundary around large health systems and hospital-based departments if you are comparing services designed for independent practices.
For a broader comparison, read 17 mental health billing companies for private practice and MCM South’s guide to growing a therapy practice without losing revenue to billing issues.
MCM South is the publisher of this article and a potential billing partner for independent behavioral health practices. Founded in 2010, the company specializes exclusively in mental and behavioral health billing. Founder Michael Williams spent seven years as a SimplePractice consultant, working directly with the clearinghouse on billing issues and software processes. Affiliate disclosure: The SimplePractice link is an affiliate link; MCM South may receive compensation if you use it.
MCM South’s active client work is concentrated in Georgia, Massachusetts, Connecticut, Texas, Florida, and New York. The team has hands-on billing experience across all 50 states historically, which is distinct from its current active service areas. Some staff members are bilingual in Spanish. Confirm current service availability and fit directly with the company.
FAQ
What does a mental health billing company actually do for a therapist?
It may verify benefits, submit claims, track payments, investigate denials, coordinate secondary claims, and support credentialing. The exact services vary, so ask which tasks are included and what the practice must still do.
Why do therapy claims get denied more often than medical claims?
There is no single reason or universal denial rate. Behavioral health claims can be affected by authorization requirements, plan-specific benefits, provider network status, coding and documentation details, and claim deadlines. Check the reason on each payer’s notice rather than assuming one cause.
How do I verify a patient’s mental health benefits before the first session?
Use the payer’s eligibility process and confirm the behavioral health administrator, active coverage, network status, cost-sharing, authorization requirements, and any service limits for the specific plan. Save the date and reference number, and explain to the patient that verification is not a guarantee of payment.
What is the difference between in-network and out-of-network for a therapy practice?
An in-network clinician has a contract with the payer and follows its participation terms. An out-of-network clinician does not have that contract. Patient costs and reimbursement options depend on the plan, so confirm the member’s benefits before setting expectations.
How long does commercial insurance credentialing take?
There is no single timeline that applies to every payer or application. Ask each payer’s provider relations team for current status, and wait for confirmation of the effective date and contract terms before treating a clinician as in-network.
The Takeaway
Commercial insurance billing is payer-specific from the first benefits check through the final appeal. Build a reliable process for verifying each plan, submitting clean claims, tracking deadlines, and confirming network status. A specialist can take on much of that operational work, but the practice should still understand the services included and have clear access to its billing information.
Quick Action Checklist
- List the commercial plans your patients use most often and confirm their behavioral health claim routes.
- Verify benefits, network status, and authorization requirements before the first session.
- Review claim denials and appeal deadlines against the specific payer’s instructions.
- Ask any billing partner for a written scope of work, fee structure, reporting process, and service-area confirmation.
Watch: MCM South Medical Billing YouTube channel
MCM South provides private practice billing services focused exclusively on mental and behavioral health, with active client work in Georgia, Massachusetts, Connecticut, Texas, Florida, and New York.
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