How Medicare and Medicaid Work Together
When you have both Medicare and Medicaid, the programs coordinate to cover different types of care and costs. Understanding this coordination helps you make informed decisions about D-SNPs and other coverage options.
Educational information only. SubsidyCheck does not determine eligibility, enroll you in a plan, or act as a government agency. Final decisions are made by Medicare, your state Medicaid agency, and licensed plan administrators.
Primary and Secondary Payers
For most dual-eligible individuals, Medicare is the primary payer for Medicare-covered services. Medicaid may pay secondary costs such as premiums, deductibles, coinsurance, and copayments—depending on your Medicaid category.
The order of payment matters for billing. Providers typically bill Medicare first, then Medicaid for allowable remaining costs. Full-benefit dual eligible individuals often have very low or no out-of-pocket costs for many services. Partial dual individuals may still have some cost-sharing.
What Each Program Covers
Medicare Parts A and B cover hospital care, doctor visits, preventive services, durable medical equipment, and more. Part D (or Medicare Advantage with drug coverage) handles prescriptions. Medicaid may cover services Medicare does not, such as long-term care in a nursing facility, personal care services, or certain behavioral health services—depending on your state.
Neither program covers everything. Dental, vision, and hearing are limited under Original Medicare but may be included in a D-SNP or available through Medicaid in some states.
D-SNPs as a Coordination Tool
A D-SNP brings Medicare benefits—and often Medicaid-related services—under one plan umbrella. Care coordination teams help members navigate this combined coverage, schedule appointments, and access community resources.
Some D-SNPs use fully integrated models where the plan manages both Medicare and Medicaid benefits. Others coordinate with state Medicaid while focusing on Medicare services. The model affects how seamlessly your benefits work together.
Cost-Sharing for Dual-Eligible Members
Federal law limits cost-sharing for full-benefit dual eligible individuals enrolled in Medicare Advantage plans, including D-SNPs. You generally should not pay Medicare deductibles, coinsurance, or copayments for Medicare-covered services.
Partial dual individuals may have different cost-sharing rules. Medicare Savings Program levels (QMB, SLMB, QI) determine what Medicaid pays on your behalf. Always confirm your specific cost-sharing with your plan and state Medicaid office.
Keeping Coverage Coordinated
Report changes in income, address, or health status to both Medicare and Medicaid. A change in one program can affect the other. If you enroll in a D-SNP, inform your providers so they bill correctly.
SubsidyCheck does not manage your benefits or guarantee coordinated coverage. For account-specific questions, contact Medicare, Medicaid, or your plan's member services.
Frequently asked questions
Will Medicaid pay my Medicare Part B premium?
If you qualify for certain Medicare Savings Programs or full Medicaid, your state may pay your Part B premium. Eligibility depends on your income and Medicaid category.
Can I use any doctor with dual coverage?
If you are in Original Medicare with Medicaid, most providers who accept both programs can treat you. In a D-SNP, you typically must use in-network providers.
What is a Medicare-Medicaid Plan (MMP)?
An MMP is a type of integrated plan in certain states that combines Medicare and Medicaid benefits. D-SNPs are a different model but also serve dual-eligible populations.
Do I need both Medicare and Medicaid cards?
Yes. Keep both cards available. Providers may need information from both programs to process claims correctly.
Sources & official references
Related D-SNP guides
Curious whether a D-SNP may fit your situation?
Take our educational eligibility check. It does not enroll you in a plan or guarantee benefits.