Does Medicare Cover Mental Health Services?

Medicare covers mental health services by applying the same cost-sharing rules to psychiatric and behavioral health care as it applies to comparable medical and surgical services under the Mental Health Parity and Addiction Equity Act. Coverage splits across three parts: Part A for inpatient psychiatric care, Part B for outpatient therapy and evaluations and Part D for prescription medications. The full scope of health insurance coverage under Medicare depends on which part governs the specific service you receive.

The two conditions that most determine whether a specific service is covered are whether the provider accepts Medicare assignment and whether the service meets Medicare's medical necessity standard. Both conditions must be satisfied for standard Medicare cost-sharing to apply.

Part A covers inpatient stays in Medicare-certified psychiatric hospitals and general acute-care hospitals. The 2026 Part A deductible of $1,736 covers days 1 through 60 of a benefit period. Coinsurance applies beginning on day 61 at $434 per day through day 90, then at $868 per day for lifetime reserve days beyond that threshold. Part B covers all outpatient mental health services under a separate cost-sharing structure.

Freestanding psychiatric hospitals carry a 190-lifetime-day cap on inpatient coverage. Once that limit is exhausted, Medicare pays nothing further for stays at those facilities. The 190-day cap does not apply to inpatient psychiatric care received in a general hospital's psychiatric unit.

Part B covers outpatient mental health services at 20% coinsurance after the $283 annual deductible in 2026, with no annual visit limit for medically necessary care. The parity rule prohibits plans from applying higher cost-sharing to mental health services than to equivalent medical services. The provider must accept Medicare assignment for the standard rate to apply.

• Individual therapy with a psychiatrist, psychologist, clinical social worker, nurse practitioner or physician assistant
• Partial hospitalization programs (PHPs) when a physician certifies the service as medically necessary
• Substance use disorder counseling and opioid treatment programs
• Preventive depression and alcohol misuse screenings, covered at 100% with no coinsurance

Part D covers prescription medications for mental health conditions, including antidepressants, antipsychotics and mood stabilizers. CMS designates antidepressants and antipsychotics as protected drug classes, requiring every Medicare Part D plan to cover all or substantially all drugs in those categories on its formulary. Coverage is still subject to each plan's tier placement and step therapy requirements.

Because formulary structures vary across Part D plans, beneficiaries should confirm their specific medication is on their plan's formulary before filling a prescription. A standalone Medicare Part D plan must be enrolled separately from any Medigap or Original Medicare benefit.

Original Medicare does not cover custodial psychiatric care, providers who opt out of Medicare or services in facilities not certified by Medicare. These exclusions carry the most financial risk because they are the scenarios beneficiaries most often assume are covered. Beneficiaries who receive care from a non-participating provider may be billed the full charge with no Medicare contribution toward the cost.

Medicare Advantage plans are required by law to cover all mental health services Original Medicare covers, but cost-sharing, network requirements and prior authorization rules vary by plan. Many Medicare Advantage plans cover additional benefits Original Medicare excludes, such as telehealth therapy sessions and caregiver counseling programs. Beneficiaries enrolled in Medicare Advantage plans should confirm network coverage and prior authorization requirements before scheduling any mental health provider.

Prior authorization is a common requirement for inpatient psychiatric care under Medicare Advantage, even for services Original Medicare would cover without pre-approval. The structure of Medicare Advantage versus Medicare Supplement coverage differs fundamentally in how providers are accessed and how cost-sharing is calculated.

Finding a mental health provider who accepts Medicare assignment is the first step to using your benefits at the standard cost-sharing rate. Original Medicare gives you access to any willing psychiatrist, psychologist, clinical social worker, nurse practitioner or physician assistant enrolled in Medicare. Medicare Advantage enrollees must also confirm the provider is in their plan's network before scheduling.

Medicare covers mental health services across Part A, Part B and Part D with the same cost-sharing structure as other medical care. The 190-day inpatient cap, provider assignment status and prior authorization requirements under Medicare Advantage are the variables most likely to affect what you will actually pay. Closing gaps requires either a Medicare Supplement plan or Medicare Advantage.

Medicare mental health coverage raises different questions depending on whether you're on Original Medicare or Medicare Advantage and whether the care is outpatient, inpatient or prescription-based. The frequently asked questions below address the most common scenarios directly: