A Dual Eligible Special Needs Plan (D-SNP) is a type of Medicare Advantage plan designed specifically for people who qualify for both Medicare and Medicaid. It bundles medical coverage, prescription drugs, and extra benefits into a single plan while coordinating care across both programs. Most D-SNPs charge no monthly premium to members, making them one of the lowest-cost Medicare Advantage options available.
Who Qualifies for a D-SNP
To enroll in a D-SNP, you need to be entitled to Medicare (Part A, Part B, or both) and also eligible for some level of Medicaid. That second part is where it gets more specific, because “eligible for Medicaid” covers a wider range of people than most realize. You don’t need full Medicaid benefits to qualify.
There are several categories of dual eligibility, each based on income relative to the federal poverty level:
- Full-benefit dual eligible: Income at or below roughly 73% of the federal poverty level (though some states extend this to 100%). You receive full Medicaid benefits, including coverage of your Medicare Part B premium and cost sharing.
- Qualified Medicare Beneficiary (QMB): Income up to 100% of the federal poverty level. Medicaid pays your Medicare Part B premium and cost sharing, but you don’t receive full Medicaid benefits.
- Specified Low-Income Medicare Beneficiary (SLMB): Income between 100% and 120% of the federal poverty level. Medicaid covers your Part B premium only.
- Qualifying Individual (QI): Income between 120% and 135% of the federal poverty level. Medicaid covers your Part B premium only.
All of these categories can enroll in a D-SNP, though the benefits you receive through the plan may differ depending on whether you have full or partial Medicaid coverage. Full-benefit dual eligibles, for instance, gain access to long-term services and supports that partial-benefit members typically do not.
How D-SNPs Differ From Regular Medicare Advantage
Standard Medicare Advantage plans accept anyone with Medicare Part A and Part B, regardless of income. D-SNPs restrict enrollment to people with both Medicare and Medicaid, and that narrower focus allows the plan to tailor its benefits, provider networks, and care coordination to a population with more complex health needs and tighter budgets.
Every D-SNP is required to have a contract with the state Medicaid agency, known as a State Medicaid Agency Contract (SMAC). This contract spells out which Medicaid benefits the plan covers, how providers are shared between Medicare and Medicaid, how the plan verifies your eligibility for both programs, and what cost-sharing protections you’re entitled to. It’s this state-level contract that makes D-SNPs different from a regular Medicare Advantage plan that simply happens to have low-income enrollees.
Three Levels of Integration
Not all D-SNPs coordinate Medicare and Medicaid to the same degree. Federal rules recognize three tiers, and the differences matter for how seamless your experience feels.
A coordination-only D-SNP meets the baseline federal requirements. It has a state contract and handles the eight minimum coordination areas (cost-sharing protections, eligibility verification, provider information sharing, and so on), but Medicare and Medicaid benefits may still feel like two separate programs with separate paperwork and separate appeals processes.
A Highly Integrated D-SNP (HIDE SNP) goes further. Its state contract must include coverage of long-term services and supports, behavioral health services, or both. This means the plan is responsible for a broader slice of your care under one roof.
A Fully Integrated D-SNP (FIDE SNP) is the most comprehensive option. It covers primary care, acute care, long-term services and supports, and behavioral health (unless the state handles behavioral health separately) through a single managed care organization. FIDE SNPs may also receive additional federal funding to account for the higher cost of serving particularly frail enrollees. For members, a FIDE SNP is the closest thing to having all your Medicare and Medicaid benefits managed by one entity with one phone number to call.
Costs for Members
Most D-SNPs set their monthly premium at or below the amount covered by the federal Low-Income Premium Subsidy, which means you pay nothing out of pocket for the plan premium. Your Medicare Part B premium is also typically covered by Medicaid if you fall into categories like QMB, SLMB, or QI. The practical result: many D-SNP members pay zero in monthly premiums for both their plan and their Part B coverage.
Cost sharing for doctor visits, hospital stays, and other services is also reduced or eliminated. Medicaid wraps around Medicare to pick up copays and deductibles that you would otherwise owe, though the exact protections depend on your dual-eligibility category and your state’s Medicaid rules.
Extra Benefits Beyond Standard Medicare
D-SNPs typically include supplemental benefits that standard Medicare does not cover. Common additions include dental care, vision exams and eyeglasses, hearing aids, over-the-counter health product allowances, and non-emergency medical transportation. These extras vary by plan and by region, so two D-SNPs in the same state may offer different packages. Full-benefit dual eligibles generally have access to the broadest set of supplemental benefits.
Prescription Drug Coverage
D-SNPs include Medicare Part D prescription drug coverage. Because dual-eligible individuals automatically qualify for the Low-Income Subsidy (also called Extra Help), your drug costs are significantly lower than what a typical Medicare beneficiary pays. The federal government subsidizes your Part D premium, and your copays at the pharmacy are reduced to a few dollars per prescription or, in some cases, nothing at all.
If you’re already receiving the full Low-Income Subsidy and your current drug plan raises its premium above the subsidy threshold, CMS will automatically reassign you to a plan that stays within the covered amount. This reassignment process also kicks in if your drug plan leaves the Medicare program entirely.
When and How to Enroll
Dual-eligible individuals have more enrollment flexibility than most Medicare beneficiaries. Starting in 2025, two special enrollment periods replace the old quarterly switching window:
The dual/LIS special enrollment period lets all dual-eligible individuals (full-benefit and partial-benefit alike, plus those eligible for Extra Help) make one plan change per month into Original Medicare with a standalone prescription drug plan, or switch between standalone drug plans.
The integrated care special enrollment period is available only to full-benefit dual eligibles and allows a once-per-month election into a FIDE SNP, HIDE SNP, or other applicable integrated plan. This is designed to make it easier for people to move into the most coordinated coverage options without waiting for open enrollment.
Beyond these two SEPs, you can also join or switch plans during the standard Medicare enrollment windows: the Initial Enrollment Period when you first become eligible for Medicare, the annual Open Enrollment Period from October 15 through December 7, and the Medicare Advantage Open Enrollment Period from January 1 through March 31. During these windows, dual-eligible individuals can choose any Medicare Advantage plan, not just D-SNPs.
How Care Coordination Works
People who qualify for both Medicare and Medicaid often have multiple chronic conditions, disabilities, or functional limitations that require care from many different providers. Without coordination, it’s common for Medicare and Medicaid services to operate in silos, leaving you to manage conflicting instructions, duplicate paperwork, and gaps in coverage on your own.
D-SNPs are required to submit a “Model of Care” to CMS that outlines how they’ll coordinate services for their members. In practice, this typically means you’re assigned a care coordinator or care management team that serves as a central point of contact. They help schedule appointments, ensure your providers are communicating with each other, arrange transportation, and connect you with Medicaid-covered services like home health aides or community-based support programs. The goal is a single, personalized care plan rather than two disconnected systems.
Availability by State
D-SNPs are not uniformly available everywhere. Because each plan must hold a contract with the state Medicaid agency, the number and type of D-SNPs in your area depends heavily on your state’s approach to Medicaid managed care. Some states actively encourage FIDE SNPs and HIDE SNPs, offering robust integration. Others have more limited options, with only coordination-level D-SNPs available. You can search for D-SNPs in your area through Medicare’s plan finder tool at Medicare.gov, filtering by your zip code and dual-eligibility status.