Dual Eligible Medicare and Medicaid Denied? Your Rights as a D-SNP or MLTSS Enrollee

About 12 million Americans are "dual eligible" — covered by both Medicare and Medicaid. These individuals are among the most vulnerable in the healthcare system, typically elderly or disabled with complex medical and long-term care needs. Dual eligibles are entitled to a broad set of protections and benefits, but navigating two separate government programs creates significant confusion — and denials. If you're dual eligible and a claim was denied, you may have rights under both Medicare and Medicaid simultaneously.

Who Is Dual Eligible?

You are dual eligible if you are enrolled in both Medicare (Parts A, B, or C) and Medicaid. There are several categories:

• Full dual eligible: Medicaid pays Medicare premiums, deductibles, and cost-sharing (may also cover services Medicare doesn't)
• Partial dual eligible / QMB: Medicare Savings Program beneficiaries whose Medicaid covers their Medicare premiums and cost-sharing (even if they don't have full Medicaid benefits)
• Qualified Medicare Beneficiary (QMB): QMBs cannot be billed for Medicare cost-sharing by any Medicare provider — this is federal law

D-SNP Plans: Dual Eligible Special Needs Plans

Many dual eligibles are enrolled in a Dual Eligible Special Needs Plan (D-SNP) — a Medicare Advantage plan specifically designed for dual eligibles. D-SNPs are required to:

• Cover all Medicare benefits
• Coordinate with Medicaid to provide seamless coverage
• Have an individualized care plan for each enrollee
• Offer enrollee support services including care coordination

D-SNP plan denials are appealed through the Medicare Advantage appeals process (not directly through Medicaid), because the plan is primarily a Medicare plan:

1. Internal appeal with the D-SNP plan
2. IRE (Independent Review Entity) review
3. OMHA ALJ hearing
4. Medicare Appeals Council
5. Federal District Court

However, if the denied service is a Medicaid benefit (not a Medicare benefit), you may need to file a Medicaid fair hearing with your state Medicaid agency.

MLTSS: Managed Long-Term Services and Supports

Many states have moved toward Managed Long-Term Services and Supports (MLTSS) programs that integrate Medicare and Medicaid financing for dual eligibles needing long-term care. MLTSS plans may cover personal care, home health, adult day, supported employment, residential care, and nursing facility services.

If your MLTSS plan denies or reduces services, you have both Medicare and Medicaid appeal rights depending on which program covers the specific service. Common MLTSS appeal issues include:

• Reduction in personal care hours: Appeal through state Medicaid fair hearing
• Denial of nursing facility admission: Appeal through both Medicare SNF process and state Medicaid
• Home health denied: May be appealable under Medicare Part A/B or Medicaid depending on the payer
• Denial of HCBS waiver services: Appeal through state Medicaid fair hearing

QMB Billing Protections: A Special Right

If you are a Qualified Medicare Beneficiary (QMB), federal law prohibits any Medicare provider from billing you for Medicare deductibles, coinsurances, or copays. This applies to all Medicare-covered services. It is illegal for providers to bill QMBs for cost-sharing — period.

If you received a bill for Medicare cost-sharing and you are a QMB:

1. Tell the provider you are a QMB and show your QMB documentation
2. Contact your state Medicaid agency to report the improper billing
3. File a complaint with CMS if the billing continues

This protection applies even if Medicaid doesn't reimburse the provider — the provider cannot pass the cost to you.

Coordination of Benefits Disputes

Dual eligibles sometimes face denials that result from coordination of benefits (COB) errors — where Medicare and Medicaid each believe the other is responsible, resulting in neither paying. If you receive a denial based on COB issues:

1. Contact both Medicare and your state Medicaid agency to identify the responsible payer
2. Contact the Benefits Coordination and Recovery Center (BCRC) at 1-855-798-2627 for Medicare COB disputes
3. File separate appeals with both programs if necessary

Using the Ombudsman

Most states have a Long-Term Care Ombudsman program for residents of nursing facilities and assisted living. If you're dual eligible and living in a facility, the ombudsman can advocate on your behalf for coverage disputes, quality of care issues, and discharge planning problems.

Additionally, State Health Insurance Assistance Programs (SHIPs) provide free one-on-one counseling to Medicare beneficiaries, including dual eligibles. They can help you navigate complex disputes involving both programs.

Which Program Covers What?

A basic guide for dual eligibles:

• Medicare covers first: Hospital care, physician services, DME, skilled nursing (short-term)
• Medicaid covers second: Fills in Medicare cost-sharing (if you're a QMB); covers long-term nursing facility care (once Medicare's 100-day SNF benefit ends); covers Medicaid-only benefits like personal care

If a service was denied because it falls into a gap between programs, contact the Medicaid ombudsman or SHIP counselor for help determining which program is responsible.

Fight Back With ClaimBack

Dual eligible denials are among the most complex in healthcare — involving two government programs, multiple plan types, and overlapping federal rules. ClaimBack helps you identify the right appeal track and draft a professional appeal letter that addresses the specific regulatory framework for your denial.

Start your appeal with ClaimBack

Related Reading

• Internal vs. External Insurance Appeal: Which Should You File?
• What Is Medical Necessity?
• How to Write an Insurance Appeal Letter