Illinois Medicare and Medicaid coordination
Medicare and Medicaid in Illinois: Dual Eligibility and FIDE SNPs
Beginning January 1, 2026, Illinois replaced the Medicare-Medicaid Alignment Initiative with fully integrated dual eligible special needs plans, called FIDE SNPs.
Illinois moved from MMAI to FIDE SNPs
MMAI ended
The Illinois Medicare-Medicaid Alignment Initiative ended December 31, 2025.
FIDE SNPs began statewide
Fully Integrated Dual Eligible Special Needs Plans became available January 1, 2026, in every Illinois county.
Medicare remains primary
Medicare generally pays first for Medicare-covered care. Medicaid can help with premiums, cost sharing and services Medicare does not cover.
Enrollment is still a choice
Eligible members can compare a FIDE SNP with other available Medicare coverage rather than assuming one model fits everyone.
Who Illinois says may qualify for a FIDE SNP
Illinois lists several requirements. The person generally must:
- Receive full Illinois Medicaid benefits through the AABD or FamilyCare category
- Be age 21 or older
- Have Medicare Part A and Part B
- Live in the plan’s service area
- Be a U.S. citizen or lawfully present
Illinois also identifies groups that are not eligible, including people in Medicaid spend down, partial-benefit Medicaid programs, certain developmental-disability institutional or waiver programs, the Breast and Cervical Cancer program, or those with comprehensive third-party insurance.
Illinois FIDE SNPs available for 2026
Illinois HFS lists four statewide FIDE SNP organizations for 2026:
Aetna Medicare FIDE
HMO D-SNP
Humana Dual Fully Integrated
HMO D-SNP
Molina Medicare Complete Care Plus
HMO D-SNP
Wellcare Meridian Dual Align
HMO D-SNP
Availability alone does not establish fit. Verify the exact county, current plan listing, providers, drugs and Medicaid category before enrollment.
What “fully integrated” is designed to change
| Feature | Illinois FIDE SNP approach |
|---|---|
| Medicare and Medicaid benefits | The same organization administers the integrated Medicare and Medicaid coverage. |
| Care coordination | One care coordinator can help address Medicare and Medicaid services. |
| Member materials | Integrated materials explain both programs together. |
| ID card | The model uses one member ID card for Medicare and Medicaid plan benefits. |
| Continuity of care | Illinois requires a 90-day transition period for members new to or transferring between FIDE SNPs, subject to state rules. |
| Long-term services and supports | Eligible Medicaid LTSS can be coordinated within the integrated plan. |
Enrollment rights during 2026
Illinois states that members eligible for a FIDE SNP can use the Integrated Care SEP once per month to enroll in a FIDE SNP, with coverage generally beginning the first of the following month.
The separate Dual/LIS SEP allows dual-eligible members to return to Original Medicare with a standalone Part D plan or switch standalone PDPs once per month. It does not create monthly enrollment rights into non-D-SNP Medicare Advantage plans.
Read the full Dual/LIS and D-SNP enrollment guide before acting.
What to verify before choosing an Illinois FIDE SNP
- Confirm full-benefit Illinois Medicaid eligibility and the exact category.
- Check every physician, hospital, specialist, therapy provider and LTSS provider.
- Review every prescription, pharmacy and Part D coverage rule.
- Ask how current Medicaid services and care coordination will transition.
- Understand supplemental-benefit eligibility, approved uses and expiration rules.
- Confirm the requested effective date and preserve every enrollment notice.
Illinois dual eligibility and FIDE SNP FAQ
Did Illinois MMAI continue in 2026?
No. Illinois states that MMAI ended December 31, 2025, and FIDE SNPs began January 1, 2026.
Are FIDE SNPs available throughout Illinois?
Yes. Illinois states that FIDE SNPs are available in every county, although eligibility and exact plan participation must still be verified.
Can an Illinois resident with QMB-only join a FIDE SNP?
Illinois states that partial-benefit Medicaid members are not eligible for its FIDE SNP model. QMB-only remains valuable assistance but is not full-benefit Medicaid.
Can an Illinois resident in Medicaid spend down join a FIDE SNP?
Illinois lists the Medicaid spend-down population among the groups that are not eligible for its FIDE SNP model. Confirm the current category directly with Illinois HFS.
Must every fully dual-eligible Illinois resident choose a FIDE SNP?
No. Eligible people retain Medicare coverage choices. Compare the FIDE SNP with other available Medicare options and understand how Medicaid services will be administered.
More Medicare guidance
Related Articles
Review the Medicare, Medicare Advantage and Illinois Medicaid questions that can arise across state lines.
Illinois cost assistanceIllinois Medicare Savings ProgramsSee 2026 QMB, SLIB/SLMB and QI-1 limits, benefits and ABE application steps.
Illinois Medicaid eligibilityIllinois Medicaid Spenddown and MedicareLearn how Medicare premiums, medical bills and Pay-in Spenddown can be used to meet an Illinois spenddown amount.
Independent Medicare guidance
Compare Illinois coverage using the actual doctors and prescriptions
Benjamin Thompson serves Illinois Medicare beneficiaries and can compare available options using providers, medications, Medicaid status and care needs. Illinois HFS determines Medicaid and FIDE SNP eligibility.
This article provides general educational information about Illinois Medicare and Medicaid coordination as of 2026. FIDE SNP eligibility, plan availability, benefits, networks, formularies and enrollment rights can change. Verify current information with Illinois HFS, Medicare and the exact plan. Thompson Medicare Brokerage is not connected with or endorsed by the U.S. government or the federal Medicare program.