Using MassHealth for Addiction Treatment: What Massachusetts Residents Need to Know

Cost is one of the most frequently cited barriers to addiction treatment in the United States. In Massachusetts, it does not have to be. MassHealth — the Commonwealth’s Medicaid program — covers one of the broadest ranges of substance use disorder (SUD) treatment services of any state Medicaid program in the country. If you have MassHealth coverage, you have access to medical detox, residential treatment, medication-assisted treatment, outpatient services, and peer recovery support — at little or no cost to you.

The challenge is not whether coverage exists. The challenge is knowing exactly what is covered, how to access it, what prior authorization requirements apply, and what to do if a claim is denied. This guide answers all of those questions.

What MassHealth Is

MassHealth is Massachusetts’s Medicaid program, a joint federal-state health insurance program for low-income Massachusetts residents. Massachusetts expanded Medicaid under the Affordable Care Act (ACA), covering adults up to 138 percent of the federal poverty level. Combined with the Commonwealth Care Bridge and other state programs, Massachusetts has achieved one of the lowest rates of uninsured residents in the United States — fewer than 3 percent, according to the Massachusetts Health Connector.

MassHealth is administered by the Massachusetts Executive Office of Health and Human Services (EOHHS). Behavioral health benefits — including substance use disorder treatment — are managed through a specialized managed care system.

MassHealth Behavioral Health: The Managed Care Structure

Massachusetts carved out behavioral health from its standard Medicaid managed care plans in 2020, creating a new integrated system. Under the current structure:

MassHealth Standard and CommonHealth: The primary full-benefit programs cover comprehensive behavioral health services, including SUD treatment. These programs serve most adult MassHealth members.

Behavioral Health Integration: Massachusetts has been working to integrate behavioral health into Accountable Care Organizations (ACOs) and Primary Care Clinician (PCC) plans to improve coordination between SUD treatment, mental health, and physical health care.

Emergency Medicaid: Limited Medicaid coverage for people in acute medical emergencies — covers medically necessary emergency detox but not ongoing treatment.

What MassHealth Covers for SUD Treatment

Federal law — specifically the ACA, the Mental Health Parity and Addiction Equity Act (MHPAEA), and their implementing regulations — requires MassHealth to cover SUD treatment at parity with other medical conditions. Massachusetts also has its own parity laws with strong enforcement mechanisms.

In practice, MassHealth covers:

Medical Detoxification

MassHealth covers medically supervised withdrawal management (detox) in:

• Licensed detox facilities and hospital-based detox units
• Both social model detox (supervision without medications) and medically managed detox (with withdrawal medications)

Prior authorization is typically required. Your provider will submit the request; MassHealth must respond within 24–72 hours for urgent requests.

Residential Treatment

MassHealth covers residential SUD treatment for members who meet clinical criteria established by the American Society of Addiction Medicine (ASAM). This is a significant coverage area — many states’ Medicaid programs cover residential treatment only minimally or through separate waivers.

Coverage includes room and board for MassHealth members in licensed residential treatment programs, subject to clinical necessity review.

Key requirement: The facility must be a MassHealth-enrolled provider. Verify enrollment before entering a program.

Partial Hospitalization Programs (PHP)

MassHealth covers PHP for members meeting clinical criteria. PHP typically involves 5–7 hours of structured programming per day, 5–7 days per week.

Intensive Outpatient Programs (IOP)

MassHealth covers IOP — typically 9+ hours per week of structured programming — for members meeting clinical criteria.

Standard Outpatient Treatment

MassHealth covers individual and group therapy with licensed behavioral health providers.

Medication-Assisted Treatment (MAT)

This is an area of particular strength in Massachusetts MassHealth coverage:

Buprenorphine: Prescriptions and associated office visits covered. MassHealth does not require prior authorization for buprenorphine — a significant access improvement compared with many state Medicaid programs. Telehealth buprenorphine prescribing is covered.

Methadone: Covered through enrolled Opioid Treatment Programs (OTPs). MassHealth pays the OTP a daily dose rate that covers dispensing and associated counseling services.

Naltrexone (Vivitrol injection): Covered. May require prior authorization.

Oral naltrexone: Covered as a standard pharmacy benefit.

Associated counseling: Counseling associated with MAT — required by federal regulation for OTPs and best practice for office-based buprenorphine — is covered.

Psychiatric Evaluation and Medication Management

Co-occurring mental health conditions are common among people with SUD. MassHealth covers psychiatric evaluation and medication management for co-occurring disorders.

Peer Recovery Support Services

MassHealth covers certified peer recovery support specialist services through its Community Support Program (CSP) benefit. Certified Peer Specialists (CPSs) who are MassHealth-enrolled providers can bill MassHealth for peer support services. This is an important and often underutilized benefit.

Crisis Services

MassHealth covers emergency psychiatric services, including crisis stabilization and acute treatment services for behavioral health emergencies.

MassHealth Eligibility

Who Qualifies

MassHealth Standard (full benefits):

• Massachusetts residents with income up to 138% of the federal poverty level (FPL)
• Children and teenagers under 19 with family income up to 300% FPL
• Pregnant women up to 200% FPL
• People receiving SSI (automatically eligible)
• People who are 65+ with income below limits
• People who are blind or disabled meeting income requirements

2024 income limits (approximate):

• Individual: $20,783/year (138% FPL)
• Family of 4: $43,056/year (138% FPL)

People with income slightly above MassHealth limits may qualify for subsidized coverage through the Massachusetts Health Connector (marketplace plans with premium tax credits).

How to Apply

Online: healthcare.gov or the Massachusetts Health Connector at mahealthconnector.org

By phone: MassHealth Customer Service at 1-800-841-2900

In person: Local MassHealth Enrollment Centers throughout the state

At a treatment facility: Many MassHealth-enrolled treatment providers have enrollment specialists who can help you apply for MassHealth at the point of treatment entry

If you need treatment urgently, apply for MassHealth at the same time as seeking treatment. Many providers will begin a clinical assessment while your application is processed.

How to Use MassHealth Benefits for SUD Treatment

Step 1: Confirm Your Coverage and Plan

Log in to your MassHealth account or call 1-800-841-2900 to confirm your current coverage type and whether you are enrolled in a managed care plan.

Step 2: Find MassHealth-Enrolled Providers

Not all treatment providers accept MassHealth. Finding enrolled providers is important:

• Massachusetts BSAS provider directory: mass.gov/bsas — searchable, filterable by service type and location
• SAMHSA’s treatment locator: findtreatment.gov — filter for Medicaid/state-financed coverage
• Massachusetts Substance Use Helpline: 1-800-327-5050 — can identify MassHealth-enrolled providers with availability

Step 3: Understand Prior Authorization

Some MassHealth services require prior authorization:

• Buprenorphine: No prior authorization required in most cases
• Detox and residential: Prior authorization typically required, submitted by your provider
• PHP and IOP: Authorization may be required and is subject to ongoing clinical review

Step 4: Know Your Rights if Benefits Are Denied

If MassHealth denies a claim or authorization, you have rights:

Internal appeal: File an appeal with MassHealth within 30 days of a denial. Continue receiving disputed services during the appeal if you request it.

Fair hearing: If your internal appeal is denied, you have the right to a fair hearing before an impartial hearing officer.

MassHealth member ombudsman: For complaints about MassHealth administration.

MHPAEA parity complaint: If you believe SUD treatment is being covered at lower levels than equivalent medical treatment, file a parity complaint with the Massachusetts Division of Insurance.

Other Funding Options for Massachusetts Residents

If you do not qualify for MassHealth, other options include:

Massachusetts Health Connector: Subsidized marketplace plans for people with incomes above MassHealth limits. SUD treatment coverage is required under the ACA.

BSAS-funded treatment slots: The Massachusetts Bureau of Substance Addiction Services funds treatment for people without coverage through the publicly funded system. Access through the Massachusetts Substance Use Helpline (1-800-327-5050).

Community health centers: FQHCs provide SUD treatment on sliding-scale fees regardless of insurance status.

Veterans’ Benefits: Massachusetts veterans have access to VA SUD treatment at VA Boston Healthcare System (Jamaica Plain campus), Bedford, and other Massachusetts VA locations.

The Bottom Line on MassHealth and Addiction Treatment

MassHealth is one of the most comprehensive state Medicaid programs for SUD treatment coverage in the country. If you are eligible, you have access to the full treatment continuum — from detox through residential, through outpatient, through MAT — at little or no cost.

The key steps: verify your eligibility, find enrolled providers, understand what requires prior authorization, and know your rights if benefits are denied.

Get Help Today

Navigating MassHealth benefits while in the middle of a crisis is genuinely difficult. Our Massachusetts Addiction Hotline specialists can help you understand your coverage, identify MassHealth-enrolled providers, and take the first step toward treatment.

Call our Massachusetts Addiction Hotline today. Free, confidential, and available 24 hours a day. You do not have to figure this out alone.