If you qualify for both Medicare and Medicaid, you hold the most generous coverage in the system, and being dual eligible can erase nearly all of your out-of-pocket costs. Millions of Americans are in this position, where Medicare covers the medical bills, Medicaid fills the gaps including long-term care, and prescription help arrives automatically. This guide explains the two kinds of dual eligibility, how the programs coordinate, what each pays, and the plans that combine them.
What dual eligible means
A person is "dual eligible" when they qualify for both Medicare and Medicaid at the same time. Medicare is the federal health insurance program tied mostly to age and work history. Medicaid is the joint federal-state program based on income and assets. Having both is powerful because each program covers what the other does not.
There are two groups, and which one you fall into decides how much help you get.
Full vs. partial dual eligibility
The line between full and partial duals is about whether you have full Medicaid or only premium and cost-sharing help. Full duals get Medicaid's complete benefit package layered on top of Medicare. Partial duals get a narrower form of help that pays Medicare's premiums and, in one case, its cost-sharing, but does not open the door to Medicaid's broader services such as long-term custodial care.
| Feature | Full-benefit dual | Partial-benefit dual |
|---|---|---|
| What you have | Medicare plus full Medicaid | Medicare plus a Medicare Savings Program only |
| Part B premium | Paid by Medicaid or the QMB program | Paid by the Medicare Savings Program |
| Medicare cost-sharing | Generally covered | Covered only under the QMB tier |
| Long-term custodial care | Covered by Medicaid | Not covered |
| Extra Help for Part D drugs | Automatic and full | Automatic and full |
| Eligible for a D-SNP | Yes | Yes, depending on the plan's tier |
How Medicare and Medicaid coordinate
The order of payment is fixed. Medicare is the primary payer and pays first on covered services. Medicaid is the secondary payer and pays second, picking up Medicare's premiums and cost-sharing and covering services Medicare leaves out.
The most important of those gaps is long-term custodial care. Medicare pays for skilled nursing only on a short-term, post-acute basis, and it does not pay for ongoing help with daily activities, the kind of care most people mean by "nursing home." Medicaid does. For a full dual in a nursing facility, Medicaid covers the cost of that care, which is the single largest reason dual eligibility matters financially. Nursing-facility residents typically contribute most of their monthly income, less a small personal needs allowance, toward the cost of care regardless of which plan they have.
Coordination also means you rarely choose between the programs. They run together: Medicare processes the claim, then Medicaid handles the remainder according to its rules.
The QMB cost protection
The strongest cost protection in dual eligibility belongs to the Qualified Medicare Beneficiary (QMB) group. Under federal law, Medicare providers, suppliers, and pharmacies are prohibited from billing a QMB enrollee for Medicare Part A and Part B cost-sharing, meaning deductibles, coinsurance, and copays. The Centers for Medicare and Medicaid Services confirms this balance-billing prohibition.
This protection is violated in practice more often than it should be. If you are in the QMB group and a provider sends you a bill for Medicare cost-sharing, that bill is improper, and you can enforce the protection. Keep your QMB documentation, and tell the provider's billing office you are a QMB enrollee.
The QMB tier is one of several Medicare Savings Programs. The tiers differ by income and by what they pay.
| Program | Income (approximate, individual) | What it pays |
|---|---|---|
| QMB (Qualified Medicare Beneficiary) | At or below 100% FPL, about $1,350/month | Part A and Part B premiums plus all Medicare cost-sharing |
| SLMB (Specified Low-Income Medicare Beneficiary) | 100 to 120% FPL, about $1,616/month | Part B premium only |
| QI (Qualifying Individual) | 120 to 135% FPL, about $1,816/month | Part B premium only; first-come, first-served; cannot have full Medicaid |
Income figures are approximate, run somewhat higher in Alaska and Hawaii, and may reflect state income disregards. Confirm current limits with your state Medicaid agency. The 2026 asset limit for all three is $9,950 for an individual and $14,910 for a married couple.
Automatic Extra Help for prescriptions
Anyone who qualifies for Medicaid, or for any Medicare Savings Program, automatically qualifies for Extra Help, the full Part D Low-Income Subsidy. You do not file a separate application. This matters because Extra Help sharply lowers drug costs.
In 2026, full Extra Help enrollees pay no more than $5.10 for a generic and $12.65 for a brand-name covered drug, and $0 once out-of-pocket costs reach the $2,100 catastrophic threshold. Because of the Inflation Reduction Act, the old partial-subsidy tier was eliminated in 2024, so everyone who qualifies now receives the full subsidy rather than a reduced version. For dual-eligible individuals enrolled in an integrated plan, generic and brand copays can be even lower, between $0 and a few dollars.
Plans that combine both programs
Dual-eligible Special Needs Plans (D-SNPs) and the more tightly integrated FIDE-SNPs are Medicare Advantage plans built to coordinate Medicare and Medicaid in one plan, with one card and one care team. A Fully Integrated Dual Eligible Special Needs Plan holds a capitated Medicaid contract covering primary, acute, behavioral health, and long-term services, so the same plan manages both sides of your coverage.
Most full duals in a FIDE-SNP have a $0 monthly premium, $0 deductibles, and $0 medical copays. Integration also simplifies appeals: a FIDE-SNP combines Medicare and Medicaid appeals into a single process. Availability and the exact plan tier vary by state and county, and the dual-eligible plan rules are changing under recent federal rulemaking. The dedicated guide below walks through how these plans work and where they operate.
How to get dual coverage
If you already have Medicare, the path to dual eligibility runs through Medicaid and the Medicare Savings Programs, both administered by your state. You apply through your state Medicaid agency. The agency checks your income against the relevant limit and your assets against the $9,950 / $14,910 thresholds for the savings programs, or the state's full-Medicaid rules for full coverage.
Two points are easy to miss. First, the savings-program asset limit is higher than many people assume, so applicants who think they have too much in savings often still qualify. Second, applying for any Medicare Savings Program triggers automatic Extra Help, so a single application can lower both your premium and your drug costs.
Frequently asked questions
Full-benefit duals have Medicare plus full Medicaid, including long-term care. Partial-benefit duals have Medicare plus a Medicare Savings Program that pays Medicare premiums, and under the QMB tier also cost-sharing, but not full Medicaid services.
No. Federal law prohibits providers, suppliers, and pharmacies from billing QMB enrollees for Medicare Part A and Part B deductibles, coinsurance, and copays. If you get such a bill, it is improper, and you can tell the billing office you are a QMB enrollee to have it corrected.
No. Qualifying for Medicaid or for any Medicare Savings Program gives you automatic full Extra Help for Part D, with no separate application.
Medicare pays first as the primary payer. Medicaid pays second, covering Medicare's premiums and cost-sharing and paying for services Medicare does not cover, most importantly long-term custodial care.
The 2026 resource limit for QMB, SLMB, and QI is $9,950 for an individual and $14,910 for a married couple. Income limits vary by tier and run somewhat higher in Alaska and Hawaii, so confirm with your state.
Learn More
- Dual-eligible plans (FIDE-SNPs): Medicare and Medicaid in one plan
- What is Medicare? Parts A, B, C, and D explained
- Original Medicare vs. Medicare Advantage
Find personalized help checking whether you qualify as dual eligible and applying for Medicaid at brevy.com.
The information on Brevy.com is for educational purposes only and is not a substitute for professional legal, financial, or medical advice. Rules vary by state and program and change frequently. Always verify with the relevant agency or a qualified professional. Brevy is not a law firm, financial advisor, or healthcare provider.