Understanding How Medicaid Works Across State Lines

Medicaid is a joint federal and state program that provides health coverage to millions of Americans with lower incomes. Unlike Medicare, which is a federal program with the same rules everywhere, Medicaid varies significantly from state to state. Each state sets its own income limits, covered services, and enrollment procedures. When you move to a new state, your Medicaid coverage does not automatically follow you. Instead, your coverage in the new state depends on that state's specific rules and whether you meet its requirements.

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According to the Centers for Medicare & Medicaid Services (CMS), as of 2023, Medicaid covered approximately 72 million Americans. However, what is covered and who is covered changes based on geography. For example, a single adult with an annual income of $18,000 might qualify for Medicaid in one state but not in another. Some states have expanded Medicaid coverage to adults earning up to 138% of the federal poverty level, while other states maintain lower income limits.

The key difference between states comes down to policy choices. States decide whether to participate in Medicaid expansion under the Affordable Care Act, set their own income thresholds for different groups (children, pregnant women, parents, and adults), and choose which medical services to cover beyond the federal minimum. This means that your coverage status can change when you cross a state border, even if your personal situation remains exactly the same.

Understanding this variation is critical when planning a move. You need to research your new state's Medicaid program before relocating or immediately after arrival to understand what coverage may be available. This guide provides information about the key factors that change between states and what you should know about continuing or obtaining coverage in your new location.

Practical Takeaway: Before moving, visit your new state's Medicaid website to compare income limits and covered services with your current state. Write down the specific limits and services that matter most to your situation so you can understand what might change.

Income Limits and Financial Thresholds by State

Income limits are among the most significant factors that change between states. Medicaid uses income thresholds to determine who may participate in the program. These thresholds are expressed as a percentage of the federal poverty level. In 2024, the federal poverty level for a single person is approximately $14,600 per year, and for a family of four, it is approximately $30,000 per year.

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States that have adopted Medicaid expansion generally set the income limit at 138% of the federal poverty level for adults. This means a single adult could have income up to around $20,100 per year and still qualify. However, 10 states have not adopted expansion, and in those states, non-disabled, non-elderly adults may not qualify for Medicaid at any income level. Instead, coverage is typically limited to pregnant women, children, parents with very low incomes, elderly individuals, and people with disabilities.

Here are examples of how income limits vary:

  • Expansion states like New York and California: Adults earning up to 138% of the federal poverty level may qualify. A single adult earning $20,100 could be within the threshold.
  • Non-expansion states like Texas and Florida: Non-disabled adults without children may not qualify regardless of income. Eligibility focuses on specific categories like parents of minor children with very limited incomes (often below 50% of poverty level) or elderly individuals.
  • Middle-ground states: Some states set limits between the minimum federal requirement and full expansion, such as at 100% or 110% of poverty level.

It's important to note that income is calculated in a specific way for Medicaid. Not all types of income count the same way. For example, child support received, certain types of self-employment income, and assets may be treated differently than wages. Some states disregard small amounts of income or assets. When you move states, the new state will recalculate your income using its own rules, and you may find yourself above or below the threshold.

Beyond the basic income threshold, states also have different rules about what counts as income and whether they consider assets. Most states do not impose asset limits for Medicaid coverage (with the exception of aged, blind, and disabled individuals), but a few states still do. Asset limits, where they exist, typically range from $2,000 to $4,000 for individuals.

Practical Takeaway: Calculate your monthly household income and compare it to your new state's income limits. Contact your new state's Medicaid program or visit its website to find the current year's thresholds. If your income is near the limit, gather documentation of your actual income to have ready.

Changes to Covered Services and Medical Benefits

One of the most significant surprises people face when moving states is discovering that their Medicaid coverage does not include the same services in the new state. While federal law requires states to cover certain core services—such as hospitalization, physician services, laboratory and X-ray services, and some long-term care—states have flexibility to cover additional services. This means your coverage could be broader or narrower depending on where you move.

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The federally required "mandatory" services that all states must cover include inpatient hospital services, outpatient hospital services, physician services, medical and surgical services, laboratory and X-ray services, skilled nursing facility services for individuals aged 21 and older, family planning services, and rural health clinic services. However, beyond these core services, states make their own choices.

Examples of services that vary by state include:

  • Dental coverage: Some states offer comprehensive dental coverage for adults, including cleanings, fillings, and extractions. Other states offer no adult dental coverage at all through Medicaid, only emergency services or coverage for children.
  • Vision care: Some states cover routine eye exams and glasses for adults. Others limit coverage to necessary medical eye care, not routine or corrective services.
  • Prescription medications: All states cover medications, but the specific drugs covered (the "formulary") and prior authorization requirements differ. A medication your doctor prescribes in your current state might require special approval in your new state, or it might not be covered at all.
  • Mental health and substance use disorder treatment: Levels of coverage vary widely. Some states offer robust outpatient mental health services, inpatient psychiatric hospitalization, and medication-assisted treatment for opioid use disorder. Others have more limited offerings.
  • Rehabilitation services: Physical therapy, occupational therapy, and speech-language pathology services have different coverage limits by state.
  • Durable medical equipment: Coverage of items like wheelchairs, oxygen equipment, and diabetic supplies varies.

If you currently use specific medical services covered by Medicaid, you must verify that your new state's program covers those same services. This is particularly important for ongoing treatments, therapies, or medications. Some people discover after moving that treatments they relied on are not available under their new state's Medicaid program, leaving them to pay out of pocket or seek alternative treatment options.

Additionally, states set different copayment amounts for services. While most Medicaid services have minimal or no copays, some states charge small amounts for certain services like doctor visits or emergency room use. The copay amounts and which services require them differ between states.

Practical Takeaway: Make a list of all Medicaid-covered medical services you currently use or anticipate needing in the next year. Before moving, contact your new state's Medicaid program to verify each service is covered. If a critical service is not covered, research alternative coverage options or private insurance before your move.

The Process of Losing Coverage in Your Current State

When you move out of a state, your Medicaid coverage does not continue in your new location. Instead, your coverage in your current state ends. The exact timing and process depends on your state's rules, but generally, you need to report your move to your current state's Medicaid program. Failure to report the change could result in continued billing to your old address or payment of claims in the state you no longer live in, creating confusion later.

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According to data from the Kaiser Family Foundation, approximately 4 million Americans move to a different state each year