Use the correct election period
D-SNP Enrollment Periods and the Dual/LIS Special Enrollment Rules
Having Medicaid or Extra Help does not create one unlimited monthly Medicare Advantage switching right. The Dual/LIS SEP and Integrated Care SEP allow different actions for different groups.
The old “dual members can change plans every month” explanation is incomplete
Dual/LIS SEP
Allows a dual-eligible or LIS-only person to elect a standalone Part D plan in any month. It can also support returning from Medicare Advantage to Original Medicare with a standalone PDP.
Integrated Care SEP
Allows a qualifying full-benefit dual member to enroll in an eligible integrated D-SNP in any month when the enrollment aligns Medicare and Medicaid coverage as required.
What each current SEP permits
| Enrollment right | Who may qualify | What it can do | What it cannot do |
|---|---|---|---|
| Dual/LIS SEP | People with Medicaid or Part D Extra Help | Elect or switch standalone PDP coverage in any month; can accompany a return to Original Medicare | Does not permit monthly enrollment into any Medicare Advantage plan |
| Integrated Care SEP | Qualifying full-benefit dual members | Enroll in an eligible integrated D-SNP in any month when alignment requirements are met | Does not apply to every D-SNP or every partial-benefit category |
Other enrollment periods may still apply
Initial enrollment
A person first eligible for Medicare may choose coverage during the applicable Initial Enrollment Period.
Annual Enrollment Period
From October 15 through December 7, eligible beneficiaries can generally join, change or leave Medicare Advantage or Part D coverage for January 1.
Medicare Advantage OEP
From January 1 through March 31, a person already in Medicare Advantage generally has one opportunity to switch MA plans or return to Original Medicare.
Event-specific SEPs
Moving, losing Medicaid, gaining Medicaid, a plan termination or another qualifying event can create a separate SEP with its own dates and allowed actions.
Five checks before using a D-SNP SEP
- Confirm current Medicaid status. Full-benefit, QMB-only, SLMB-only and other categories do not produce identical plan eligibility.
- Name the action. Joining an integrated D-SNP, switching a PDP and returning to Original Medicare are different transactions.
- Verify the exact D-SNP. CMS publishes an annual list of integrated D-SNPs eligible to receive enrollment under the Integrated Care SEP.
- Check alignment. The Medicare D-SNP and Medicaid managed-care enrollment may need to be affiliated or otherwise aligned.
- Coordinate medical and drug coverage. Avoid an unintended gap, duplicate drug coverage or automatic disenrollment from incompatible coverage.
Why plan comparison still comes before enrollment
An SEP answers whether Medicare permits a change; it does not answer whether the new plan is a good fit. Confirm provider networks, hospitals, prescriptions, pharmacies, prior authorization, Medicaid coordination and supplemental-benefit restrictions.
Use the D-SNP comparison checklist before submitting the application.
D-SNP enrollment FAQ
Can every dual-eligible person switch D-SNPs monthly?
No. A monthly Integrated Care SEP may allow a qualifying full-benefit dual member to join an eligible integrated D-SNP when alignment rules are met. Other changes require another valid enrollment period.
What does the Dual/LIS SEP allow?
It allows a person with Medicaid or Extra Help to elect a standalone Part D plan in any month. It may be used when returning from Medicare Advantage to Original Medicare with PDP coverage.
Can the Dual/LIS SEP enroll someone in an ordinary Medicare Advantage plan?
No. CMS replaced the old quarterly rule with a monthly SEP focused on standalone Part D elections.
When does coverage usually begin?
For many SEP elections, coverage begins the first day of the month after the plan receives the valid request. Confirm the effective date before ending or relying on other coverage.
Does losing Medicaid create a different SEP?
It can. Loss of special-needs status and loss of Medicaid or Extra Help can create separate enrollment rights. The timing depends on the notice and the individual situation.
Related dual-eligibility and Medicare guides
Use the right SEP for the right coverage change
Benjamin Thompson can help identify the requested change, review available plans and coordinate the medical and prescription pieces before an enrollment is submitted.
This article provides general educational information and does not determine Medicaid, Medicare Savings Program, Extra Help or D-SNP eligibility. Program rules, limits, benefits, networks, formularies and enrollment rights can change. Verify the exact person’s status with Medicare, the applicable state Medicaid agency and the plan before changing coverage. Thompson Medicare Brokerage is not connected with or endorsed by the U.S. government or the federal Medicare program.