Medicaid is not one program. It is 51 programs (50 states plus the District of Columbia) built on a federal floor, and the most common source of confusion is that the floor is much narrower than what most enrollees actually receive.
Federal law names a specific list of benefits every state Medicaid program must cover. Everything else is a state choice made through the state plan process. That is why a service fully covered in Oregon can be flatly excluded in Alabama, and why “does Medicaid cover X” almost always has a state-specific answer.
For scale: 73,526,272 people were enrolled in Medicaid and CHIP across the 50 states and DC in May 2026, according to CMS enrollment data last updated August 28, 2026. Of those, 66.4 million were in Medicaid and 7.1 million in CHIP, and 35.2 million (47.9% of total enrollment) were children.
The Federal Floor: 18 Mandatory Benefits
Medicaid.gov publishes the authoritative list of mandatory state plan benefits, each tied to a section of the Social Security Act and a federal regulation. Every state has to cover all of them:
- Inpatient hospital services
- Outpatient hospital services
- Physician services
- Laboratory and x-ray services
- Nursing facility services
- Home health services
- Rural health clinic services
- Federally qualified health center (FQHC) services
- EPSDT services for people under 21
- Family planning services
- Tobacco cessation counseling for pregnant women
- Transportation to medical care
- Nurse midwife services
- Certified pediatric and family nurse practitioner services
- Freestanding birth center services (where the state licenses or recognizes them)
- Medication Assisted Treatment (MAT)
- Routine patient costs for enrollees in qualifying clinical trials
- Concurrent care for children receiving hospice
Two of those deserve a flag because people rarely know they exist. Transportation to medical care is genuinely mandatory under 42 CFR 431.53, so if you cannot get to a covered appointment, your state has to arrange a ride. And FQHC and rural health clinic services are mandatory, which is why community health centers are the most reliable Medicaid-accepting providers in most markets. Our guide to free and sliding-scale clinics explains how to find one.
The Optional Column Is Where Coverage Actually Varies
Here is the part that surprises people. The following are all optional benefits that a state may or may not elect:
- Prescription drugs
- Dental services and dentures
- Eyeglasses
- Physical therapy, occupational therapy, and speech, hearing and language services
- Hospice
- Personal care services
- Case management
- Clinic services
- Private duty nursing
- Prosthetics
- Inpatient psychiatric services for people under 21
- Other licensed practitioner services
- Certified community behavioral health clinic (CCBHC) services
- Home and community based services under 1915(i), 1915(j) and Community First Choice
Prescription drugs are the clearest illustration of how “optional” works in practice. Every state has elected drug coverage, so no one loses medication access at the state line, but each state runs its own preferred drug list and prior authorization rules. If your drug is non-preferred, see prescription assistance programs for the manufacturer and foundation routes.
Adult dental and adult vision are where the optional column bites hardest, because the variation is extreme and the out-of-pocket consequences are immediate. We break those out separately in does Medicaid cover dental and does Medicaid cover vision.
EPSDT: Why Coverage Is Different Under 21
If there is one fact worth taking away from this page, it is this one.
Early and Periodic Screening, Diagnostic and Treatment (EPSDT) is the mandatory benefit for Medicaid enrollees under age 21, and it functions as an override on the whole optional/mandatory split. Medicaid.gov states the rule plainly: states must furnish all Medicaid-coverable, appropriate and medically necessary services needed to correct or ameliorate a condition, whether or not the state covers that service for adults.
The federal regulation at 42 CFR 441.56(c) is specific about what has to be provided when a screening indicates a need, “even if the services are not included in the plan,” and it names three categories outright: diagnosis and treatment for defects in vision and hearing, including eyeglasses and hearing aids; dental care needed for relief of pain and infections, restoration of teeth and maintenance of dental health; and appropriate immunizations.
The screening itself is also defined. Under 42 CFR 441.56(b), an EPSDT screen must include a comprehensive health and developmental history, a comprehensive unclothed physical exam, appropriate vision testing, appropriate hearing testing, appropriate laboratory tests, and dental screening by direct referral to a dentist beginning at age 3.
Practical translation: a 19-year-old on Medicaid in a state with no adult dental benefit still has a dental benefit, because 19 is under 21. Same for eyeglasses, hearing aids, physical therapy and orthodontia when a case is scored medically necessary. That last one is the whole basis of does Medicaid cover braces.
Does Medicaid Cover Therapy and Mental Health Care?
Yes, in every state, though the benefit is assembled from optional categories rather than a single mandatory “mental health” line. Outpatient counseling is typically paid as a physician service, a clinic service, or an “other licensed practitioner” service, while rehabilitative services under 42 CFR 440.130 carry most community behavioral health programs.
What protects the depth of that coverage is federal parity. The Mental Health Parity and Addiction Equity Act (MHPAEA) requires coverage for mental health and substance use disorders to be no more restrictive than the coverage generally available for medical and surgical conditions. Medicaid.gov confirms a March 2016 final rule applied those requirements to Medicaid managed care organizations, to Alternative Benefit Plans under Section 1937 (the benefit package used for the ACA expansion population), and to CHIP.
Parity covers four things specifically: copays, coinsurance and out-of-pocket maximums; limits on how many inpatient days or outpatient visits are covered; the use of care management tools; and the criteria used for medical necessity determinations. So a managed care plan cannot cap you at 12 therapy visits a year while placing no visit cap on primary care.
Two more things worth knowing. Medication Assisted Treatment for opioid use disorder is a mandatory benefit, not an optional one. And Certified Community Behavioral Health Clinic services are an optional benefit a growing number of states have elected, which matters because CCBHCs are required to serve everyone regardless of ability to pay.
If you are uninsured rather than enrolled, our therapy cost without insurance guide covers the cash market instead.
What Medicaid Generally Does Not Cover
Medicaid is broad, but a few gaps are consistent across states:
Purely cosmetic procedures. Not covered anywhere. This is the line orthodontia sits on, which is why states screen with a medical necessity index.
Long-term custodial care without meeting the eligibility rules. Nursing facility services are mandatory, but qualifying financially for long-term care Medicaid is a separate hurdle. See Medicaid spend-down.
Care from providers who do not accept Medicaid. This is the most common real-world coverage gap. A benefit that exists on paper is worthless if no dentist or specialist within 60 miles is enrolled.
Services above a state’s limits. Optional benefits routinely carry annual dollar caps, visit caps and prior authorization requirements that a mandatory benefit would not.
How to Find Out What Your State Actually Covers
Three steps, in order of reliability.
- Read your state Medicaid agency’s member handbook, not a third-party summary. Every state publishes one, and it is the document that governs.
- If you are in a managed care plan, check the plan’s evidence of coverage too. Many states let plans add “value-added benefits” on top of the state package, and those extras vary by plan within the same state.
- Call the number on your Medicaid card before scheduling anything expensive. Ask specifically whether the service requires prior authorization, because a covered service delivered without prior authorization gets denied like an uncovered one.
If you are still deciding whether Medicaid is the right program at all, Medicaid vs. Medicare sorts out which applies to you, Medicaid income limits for 2026 covers eligibility, how much Medicaid costs covers premiums and copays, and Medicaid renewal covers keeping it. If you are uninsured and not eligible, start with our uninsured start here guide.
The Bottom Line
Eighteen benefits are guaranteed in every state. Everything else, including the services people most often need and most often assume are covered, is a state election. And if you are under 21, EPSDT converts nearly the entire federal benefit catalog into something your state has to provide when it is medically necessary. That single rule is the difference between a thin benefit and a comprehensive one, and it is the first thing to check before paying cash for anything.