Medicaid Part B is medical insurance for people who meet their state's income and resource limits

Medicaid Part B is not a separate program — it is the medical coverage piece of Medicaid itself. When you hear "Medicaid," you are hearing about Part B. It covers doctor visits, hospital care, lab work, X-rays, and other medical services for people whose income and assets fall below their state's threshold. Each state runs its own Medicaid program with its own income limits, so what qualifies you in one state may not in another.

The confusion usually comes from the name. "Part B" sounds like it pairs with a Part A, the way Medicare does. In Medicare, Part A covers hospital stays and Part B covers doctor visits — they are genuinely separate. In Medicaid, there is no Part A and Part B split for most people. Medicaid is one program. The term "Part B" is mostly used by people comparing it to Medicare, or by states that have carved out specific services into separate managed-care plans.

If you are on Medicaid, you already have Part B coverage. You do not explore for it separately or choose it as an option. It comes with your Medicaid card.

Key Takeaways

  • Medicaid Part B is the medical coverage that comes with Medicaid — it covers doctor visits, hospital stays, lab work, and preventive care for people below their state's income limit.
  • Each state sets its own income and resource limits, so you must check your specific state's rules to understand whether you may be covered.
  • You do not explore for Part B separately; if you have Medicaid, you have Part B coverage included.
  • Medicaid Part B has no monthly premium for most people, unlike Medicare Part B, which charges a monthly fee.
  • Coverage details, copays, and which doctors accept Medicaid vary by state and sometimes by which managed-care plan you are in.

What Medicaid Part B actually covers

Medicaid Part B pays for visits to doctors, nurse practitioners, and physician assistants. It covers hospital inpatient stays, emergency room visits, and outpatient surgery. Lab work, imaging (X-rays, ultrasounds, CT scans), and pathology are included. Preventive services like annual checkups, cancer screenings, and vaccinations are covered with no copay in most states.

Mental health visits, substance use treatment, and therapy are covered under Medicaid Part B in all states, though the number of visits or the copay amount may vary. Prescription drugs are usually covered under a separate piece called the pharmacy benefit, not Part B itself, but they come with your Medicaid card.

What is not covered varies by state. Dental care, vision care, and hearing aids are optional benefits — some states cover them, others do not. Nursing home care is covered under a different Medicaid category (long-term care), not Part B. Cosmetic surgery and experimental treatments are not covered.

How Medicaid Part B differs from Medicare Part B

The names are similar but the programs are completely different. Medicare Part B is federal insurance for people 65 and older, regardless of income. It costs a monthly premium (the amount changes yearly based on income). Medicaid Part B is state-run insurance for people below a certain income, and it has no monthly premium for most people.

If you are 65 or older and have low income, you may have both Medicare and Medicaid. In that case, Medicare is your primary insurance and Medicaid fills in gaps — it is called "dual coverage." But they are two separate programs with two separate cards.

Income limits and how they work by state

To be covered by Medicaid Part B, your income must be below your state's limit. That limit is usually expressed as a percentage of the federal poverty level. Some states use 100 percent of poverty level, others use 138 percent, and a few use different thresholds depending on whether you are a child, parent, or adult without children.

Your state's Medicaid office counts income in a specific way. Wages, self-employment income, and Social Security are counted. Child support and some other payments may or may not be counted depending on your state's rules. Assets (savings, property, vehicles) are also checked in most states — if you have too much in savings, you may not be covered even if your income is low enough.

Because limits vary widely, a person with $1,500 per month in income might be covered in one state and not in another. You must check your specific state's current limits; they are published on your state Medicaid office website or through your state health department.

Copays, deductibles, and out-of-pocket costs

Medicaid Part B has no monthly premium for most people. However, many states charge small copays when you use services. A doctor visit might be $1 to $5. An emergency room visit might be $3 to $5. Some states charge no copays at all. Pregnant people, children, and people receiving emergency services are often exempt from copays.

Medicaid does not use deductibles the way private insurance does. You do not have to pay a set amount before coverage kicks in. Instead, you may pay a small copay per visit or service, and Medicaid covers the rest (up to what the provider is allowed to charge).

If you cannot afford a copay, tell the provider or the Medicaid office. States must have a process to reduce or waive copays for people who cannot pay. You should not be turned away from care because of a copay.

How to learn about you have Medicaid Part B coverage

If you have a Medicaid card, you have Part B coverage. The card will show your name, a member ID number, and your state Medicaid program name. It will list any copays you owe and any services that are not covered in your state.

If you do not have a card but think you may be covered, contact your state Medicaid office. You can find it by searching "[your state] Medicaid" online or by calling 211 (a free referral line). They will tell you whether you are enrolled and what your coverage includes.

If you are in a Medicaid managed-care plan (some states require this), your card will show the plan name instead of the state Medicaid program name. The coverage is the same, but you may have a specific list of doctors and hospitals you must use.

What happens if you lose Medicaid Part B coverage

Medicaid coverage can end if your income rises above your state's limit, if you move to another state, or if you do not recertify when your coverage period expires. Most states require you to recertify once a year. You will receive a notice in the mail telling you when to recertify and how to do it.

If your coverage ends, you have options. If your income is just slightly above the Medicaid limit, you may be able to buy a plan through the health insurance marketplace (healthcare.gov). If you are 65 or older, you can enroll in Medicare. If you lose coverage due to a life change (job loss, divorce, move), you may be able to enroll in marketplace coverage outside the normal enrollment period.

Frequently Asked Questions

Is Medicaid Part B the same as regular Medicaid?

Yes. Medicaid Part B is the medical coverage that comes with Medicaid. The term "Part B" is used mainly to distinguish it from Medicare Part B or to describe it in comparison to other insurance types. If you have Medicaid, you have Part B coverage.

Do I have to pay a monthly premium for Medicaid Part B?

No. Medicaid Part B has no monthly premium for most people. Some states charge small copays when you use services (usually $1 to $5 per visit), but there is no ongoing monthly cost like Medicare Part B has.

What if my state did not expand Medicaid?

Some states have not expanded Medicaid to cover adults without children, even if their income is very low. In those states, you may not be covered unless you are a child, parent, pregnant person, or elderly or disabled. Check your state Medicaid office to learn your state's rules.

Can I use my Medicaid Part B in another state?

Medicaid is state-run, so your coverage ends if you move. You must explore for Medicaid in your new state. Some states process applications quickly; others take several weeks. If you are moving, contact your new state's Medicaid office before you move to learn how the process works.

Does Medicaid Part B cover prescription drugs?

Prescription drugs are usually covered under Medicaid's pharmacy benefit, which comes with your Medicaid card. The specific drugs covered and any copays vary by state. Ask your pharmacist or Medicaid office which drugs are covered before you fill a prescription.