Adult expansion Medicaid covers 10 categories of essential health benefits, including doctor visits, hospital stays, mental health care, prescription drugs, and preventive services. It’s available to adults under 65 who earn up to 138% of the federal poverty level, which in 2025 means roughly $21,597 a year for a single person or $44,367 for a family of four.
Who Qualifies for Expansion Medicaid
Before the Affordable Care Act, most states only offered Medicaid to specific groups: pregnant women, children, people with disabilities, and very low-income parents. Expansion opened the program to nearly all adults with income at or below 138% of the federal poverty level, regardless of whether they have children or a disability. The income thresholds for 2025 scale with household size: $29,187 for a two-person household, $36,777 for three people, and $51,957 for five.
Not every state has adopted expansion. If your state hasn’t, these benefits don’t apply to you through Medicaid, though you may qualify for subsidized marketplace coverage instead.
The 10 Required Benefit Categories
Expansion Medicaid must cover services across 10 essential health benefit categories established by the ACA. These aren’t vague promises. They define the floor of what every expansion plan must include:
- Outpatient care: doctor visits, specialist appointments, and same-day procedures that don’t require an overnight hospital stay.
- Emergency services: emergency room visits, including at out-of-network hospitals.
- Hospitalization: overnight stays, surgery, and inpatient care.
- Maternity and newborn care: prenatal visits, labor and delivery, and care for your baby.
- Mental health and substance use disorder services: therapy, counseling, inpatient behavioral health, and addiction treatment.
- Prescription drugs: outpatient medications.
- Rehabilitative and habilitative services: physical therapy, occupational therapy, speech therapy, and medical devices like wheelchairs.
- Lab services: blood work, imaging, and diagnostic tests.
- Preventive and wellness services: screenings, immunizations, and chronic disease management.
- Pediatric services: including dental and vision for children (adult dental and vision coverage varies by state).
Preventive Care at No Cost
Most preventive services are covered with zero out-of-pocket cost when you use an in-network provider. That means no copay or coinsurance for things like immunizations, cancer screenings, blood pressure checks, and annual wellness exams, even if you haven’t met any deductible. This is one of the most practically valuable parts of expansion coverage, since it removes the financial barrier to catching health problems early.
Mental Health and Addiction Treatment
Behavioral health coverage under expansion Medicaid is broad. It includes outpatient counseling, inpatient psychiatric care, and substance use disorder treatment. States are required to cover medication-assisted treatment for opioid use disorder, which combines prescription medications with counseling and is considered the most effective approach for opioid addiction.
Many states have gone further, using waivers and state plan amendments to expand the types of behavioral health services available. The specifics, like whether your state covers residential treatment facilities or peer support services, depend on where you live.
How Prescription Drug Coverage Works
Medicaid operates with what’s essentially an open formulary. State programs must cover nearly all FDA-approved drugs from manufacturers that participate in the federal drug rebate program. That’s a much broader requirement than most private insurance plans, which can exclude entire categories of medication.
The tradeoff is that states use several tools to manage costs. Your state may maintain a preferred drug list that steers prescribers toward cheaper options. If your doctor prescribes something not on that list, prior authorization may be required. States can also use step therapy, which means you try a lower-cost drug first and only move to a more expensive one if it doesn’t work. Some states set limits on the number of prescriptions you can fill per month without additional approval.
Hospital and Emergency Coverage
Expansion Medicaid covers both emergency room visits and inpatient hospital stays, including surgery. After states expanded Medicaid, hospital stays paid by Medicaid increased substantially (by 24 to 52% depending on the hospital type), while the number of people showing up uninsured dropped dramatically. Self-pay hospital stays fell by more than 60% at hospitals in expansion states. In practical terms, this means expansion enrollees can access hospital care without the catastrophic bills that come with being uninsured.
Maternity and Postpartum Care
Pregnancy-related coverage includes prenatal visits, labor and delivery, and postpartum care. A major expansion came through the American Rescue Plan Act of 2021, which gave states the option to extend postpartum coverage from 60 days to a full 12 months after the end of pregnancy. During that 12-month window, you remain continuously eligible regardless of changes in your income, household size, or other circumstances. The only reasons coverage can end during this period are if you request it, move out of state, or were enrolled due to an error or fraud.
States that elect this option must provide full benefits throughout the postpartum period, not a stripped-down package. That includes all the same services you’d receive as a regular Medicaid enrollee.
Rehabilitative Services and Devices
Physical therapy, occupational therapy, and speech therapy all fall under the rehabilitative and habilitative services category. Coverage can also include assistive devices, medical equipment, and supplies that are necessary to meet your rehabilitation goals. A physician or other licensed practitioner needs to recommend these services, and they’re typically organized under a written rehabilitation plan that includes specific goals and a timeline for reassessment (at least once a year).
Habilitative services, which help you develop skills you never had rather than recover ones you lost, are also required. This distinction matters for people with developmental or congenital conditions.
What Varies by State
The 10 essential health benefit categories set the minimum, but states have significant flexibility in deciding exactly how generous coverage is within each category. The most notable gaps tend to show up in adult dental and vision care. Dental benefits for adults are optional under Medicaid, and state approaches range from no coverage at all to emergency-only extractions to comprehensive preventive and restorative care. Vision coverage for adults follows a similar pattern.
Other areas where state decisions matter include the scope of telehealth services, whether community-based mental health services are covered, specific limits on therapy visits, and the details of which medical devices qualify for coverage. Your state Medicaid agency’s website or a call to their helpline is the most reliable way to check exactly what your plan includes beyond the federal minimums.
Cost Sharing for Enrollees
Expansion Medicaid generally has very low cost sharing compared to private insurance. Most preventive services have no cost sharing at all. For other services, states can charge small copays, but federal rules cap what Medicaid can charge, and the amounts are typically a few dollars per visit or prescription. Total out-of-pocket costs for a Medicaid enrollee cannot exceed 5% of household income. For people at the income levels expansion covers, that ceiling is low enough that Medicaid functions close to free coverage for most enrollees.