Medicaid vs. Medicare: What They Are, How They Differ, and How They Can Work Together

Understanding Medicaid vs. Medicare can be confusing, especially when both programs sound similar and often get talked about together. But they serve different purposes, have different eligibility rules, and pay for care in different ways.

This guide breaks it all down in clear, practical terms so you can quickly see:

• What Medicaid is
• What Medicare is
• Who qualifies for each
• What they typically cover
• How costs work
• What happens if you qualify for both

Big Picture: The Key Difference in One Sentence

• Medicare is a federal health insurance program, mainly for people 65 and older and some younger people with disabilities.
• Medicaid is a state-run health coverage program for people with limited income and resources, of any age, who meet specific rules.

Think of Medicare as age- and disability-based insurance, and Medicaid as income-based assistance.

What Is Medicare?

Medicare in Simple Terms

Medicare is a national health insurance program run by the federal government. Most people qualify for it when they turn 65, but some people under 65 qualify because of certain disabilities or specific long-term medical conditions.

You do not need a low income to get Medicare. Many people with middle or higher incomes have it because it is tied to age or disability, not financial status.

The Four Parts of Medicare

Medicare is usually described in “parts”:

• Part A – Hospital Insurance
  Helps cover:

  • Inpatient hospital care
  • Limited skilled nursing facility care
  • Some home health care
  • Hospice care

• Part B – Medical Insurance
  Helps cover:

  • Doctor visits
  • Outpatient care
  • Lab tests, X-rays, some screenings
  • Some preventive services
  • Certain medical equipment (like walkers or wheelchairs when medically necessary)

• Part C – Medicare Advantage

  • Offered by private companies approved to provide Medicare benefits
  • Combines Part A and Part B, often includes prescription drug coverage and sometimes extra benefits (like limited dental or vision)
  • You usually still pay your Part B premium and may pay an additional premium to the plan

• Part D – Prescription Drug Coverage

  • Helps pay for outpatient prescription medications
  • Offered through private plans that work with Medicare

Who Typically Qualifies for Medicare?

People commonly qualify if they:

• Are 65 or older and eligible for Social Security or Railroad Retirement benefits, or
• Are under 65 and have received certain disability benefits for a set period, or
• Have specific conditions recognized under Medicare rules (for example, end-stage kidney failure that requires dialysis or a transplant).

Medicare eligibility does not depend on how much money you make.

What Is Medicaid?

Medicaid in Simple Terms

Medicaid is a public health coverage program for people with limited income and resources. It is funded by both the federal government and states, but each state runs its own Medicaid program, so details vary depending on where you live.

Medicaid serves a wide range of people, including:

• Children
• Pregnant people
• Adults with low income
• Older adults with low income
• People with disabilities who meet financial and program rules

Key Features of Medicaid

• Means-tested: Eligibility is based on income, and sometimes assets/resources.
• State-specific: Each state sets its own rules for:
  • Who qualifies
  • What services are covered
  • How much, if anything, members pay
• Broader services for some groups: Medicaid often covers services that Medicare may limit or not cover, such as:
  • Long-term care in nursing facilities
  • Some home- and community-based services
  • Certain transportation for medical appointments, depending on the state

Who Typically Qualifies for Medicaid?

While rules differ by state, people often qualify if they:

• Have income at or below certain thresholds, and
• Belong to a covered group (like children, pregnant people, parents/caregivers, people with disabilities, or older adults), and
• Meet any additional state-specific requirements related to residency, immigration status, or assets.

Some states have expanded Medicaid to cover more adults based mainly on income level. In other states, eligibility can be more limited, especially for adults without children.

At a Glance: Medicaid vs. Medicare

Here’s a simple side-by-side comparison to clarify the basics:

Eligibility: Who Gets Medicaid vs. Who Gets Medicare?

Medicare Eligibility Basics

You might qualify for Medicare if:

1. You are 65 or older, and
2. You are a U.S. citizen or meet specific lawful presence requirements, and
3. You or your spouse have worked long enough in jobs that paid into Medicare taxes (or you may pay a premium if you do not meet work history requirements).

You may also qualify if you are under 65 and have certain disabilities or diagnoses that meet Medicare’s rules.

Medicaid Eligibility Basics

You might qualify for Medicaid if:

1. Your income is below your state’s limit for your household size, and
2. You fit into an eligible group (for example, a child, pregnant person, parent/caregiver, older adult, or person with a qualifying disability), and
3. You meet residency and immigration rules in your state, and
4. You meet any resource/asset limits, if your state uses them for your category.

Because each state sets different income guidelines, someone who qualifies for Medicaid in one state might not qualify in another. Checking your own state’s rules is often the most direct way to know.

What Do Medicare and Medicaid Cover?

What Medicare Typically Covers

Medicare coverage is organized around its parts:

• Part A generally covers:

  • Inpatient hospital stays
  • Skilled nursing facility care (short-term, under certain conditions)
  • Some home health services
  • Hospice care

• Part B generally covers:

  • Doctor visits and specialist visits
  • Outpatient procedures
  • Some screening and preventive services
  • Some emergency room and urgent care services
  • Certain medical supplies and equipment

• Part C (Medicare Advantage):

  • Must include at least the same benefits as Parts A and B
  • May offer extra benefits such as limited dental, vision, or hearing, depending on the plan

• Part D:

  • Outpatient prescription drugs
  • Specific medications and copay amounts vary by plan

Medicare usually does not cover:

• Most routine dental care, dentures
• Most vision care or eyeglasses (some exceptions)
• Long-term custodial care in a nursing home (help with bathing, dressing, etc., if that is the main type of care needed)
• Certain home care that is primarily for help with daily activities rather than medical treatment

What Medicaid Typically Covers

Medicaid must cover certain basic services, and states can choose to add more. Common examples include:

• Required services (in most programs):

  • Inpatient and outpatient hospital services
  • Physician (doctor) services
  • Laboratory and X-ray services
  • Nursing facility services (for adults)
  • Home health services under certain conditions

• Often-covered additional services (varies by state):

  • Prescription drugs
  • Dental care (especially for children; sometimes for adults)
  • Vision services (eye exams, glasses in some cases)
  • Behavioral health/mental health and substance use services
  • Transportation to medical appointments in some programs
  • Long-term services and supports (LTSS), such as nursing home care or certain in-home support services

Because Medicaid is largely run by states, the exact list of covered services can look quite different from one state to another.

Costs: What You Might Pay Under Each Program

Costs with Medicare

People using Medicare typically pay:

• Part A premium:

  • Often $0 for people (or their spouses) with enough work history under Medicare-covered employment
  • A monthly premium for those without enough work history

• Part B premium:

  • A monthly premium that most enrollees pay; the exact amount can change from year to year and can be higher for individuals with higher incomes

• Deductibles:

  • An amount you pay out-of-pocket before coverage starts for certain services, under Part A and Part B

• Coinsurance and copayments:

  • A share of the cost you pay for services (for example, a percentage of the cost after the deductible, or a set dollar amount per visit)

• Part D (drug plan) costs:

  • A monthly premium for drug coverage (varies by plan)
  • Copayments or coinsurance for medications

Because of these costs, many people with Medicare consider supplemental coverage or programs that help pay Medicare costs if they qualify.

Costs with Medicaid

Medicaid is designed for people with limited financial resources, so out-of-pocket costs are often much lower than typical private insurance or Medicare alone.

Depending on your state and your income level, you might:

• Pay no monthly premium
• Pay very small copays for prescriptions or office visits
• Pay reduced or no deductibles

Some groups, such as young children or pregnant people, may have no cost-sharing at all.

In some states, people with slightly higher incomes under Medicaid expansions may pay modest premiums or higher copays, but these are usually limited by federal rules.

Can You Have Both Medicaid and Medicare? (Dual Eligibility)

What “Dual Eligible” Means

Some people qualify for both programs. These individuals are often called “dual eligible” or “dually eligible.”

This generally happens when someone:

• Is 65 or older, or has a qualifying disability (so they get Medicare), and
• Has a low income and limited resources (so they also qualify for Medicaid).

How Medicare and Medicaid Work Together

When someone has both:

• Medicare is usually the primary payer. It pays first for covered services.
• Medicaid is usually the secondary payer and may:
  • Help pay Medicare premiums
  • Cover some or all of Medicare’s deductibles and copays
  • Provide extra services that Medicare does not cover (for example, long-term care, depending on the state and individual circumstances)

This combination can significantly reduce out-of-pocket costs and broaden the range of services available, especially for older adults or people with disabilities who have both low income and ongoing health needs.

Choosing the Right Path for Your Situation

You do not “choose” between Medicaid and Medicare based solely on preference—they each have specific eligibility rules. But understanding those rules can help you know what to look into next.

If You Are 65 or Approaching 65

• Start with Medicare:
  • Check when you can enroll in Medicare (there are set enrollment periods).
  • If your income is limited, explore whether you might also qualify for Medicaid or special programs that help pay Medicare costs.

If Your Primary Concern Is Low Income or Losing Coverage

• Look at Medicaid options in your state:
  • This may be available to adults, children, pregnant people, and others with limited incomes.
  • If you are already on Medicare, also ask whether your state’s Medicaid program can help cover Medicare premiums or cost-sharing.

If You Care for a Family Member

If you are supporting an older or disabled relative, a child with special needs, or another loved one:

• Consider whether Medicare, Medicaid, or both might apply to them.
• Pay attention to long-term care needs, because Medicaid often plays a major role in helping cover nursing home care or certain home-based services that Medicare may not fully pay for.

Common Misunderstandings About Medicaid vs. Medicare

To clear up frequent confusion:

• “Medicare and Medicaid are the same thing.”

  • No. They are different programs with different rules, funding, and purposes. Some people are on one, some on the other, and some on both.

• “You automatically get Medicaid when you turn 65.”

  • Not necessarily. Turning 65 commonly connects to Medicare, not Medicaid. Medicaid eligibility still depends on income, resources, and state rules.

• “Medicare always pays for nursing home care in the long run.”

  • Medicare may cover a limited stay in a skilled nursing facility under certain conditions, but it does not generally cover long-term custodial care. Medicaid is often the main program that helps with long-term nursing home costs if someone qualifies.

• “If I get Medicaid, I do not need Medicare.”

  • If you qualify for Medicare, it usually remains very important even if you also have Medicaid. Many people keep both, with Medicaid helping to cover Medicare’s costs and gaps.

Quick Takeaways: Medicaid vs. Medicare

Here are the most important points to remember:

• Medicare = Federal health insurance

  • Mainly for 65+ or certain people with disabilities
  • Not based on income
  • Parts A, B, C, and D cover hospital, medical, and drug services in different ways

• Medicaid = State-run health coverage

  • Based on limited income and resources
  • Available to children, adults, pregnant people, older adults, and people with disabilities who meet state criteria
  • Often covers extra services like long-term care and supports that Medicare may not fully cover

• Some people have both and are “dual eligible,” with Medicare as primary and Medicaid helping with costs and additional services.

Understanding the basics of Medicaid vs. Medicare can help you or a loved one know what to explore next, what questions to ask, and where certain types of health coverage are likely to come from.