People with Medicare and Medicaid, or with Extra Help, may have special enrollment opportunities. The current rules do not let every eligible person switch to any Medicare Advantage plan every month. The type of coverage and the specific enrollment period matter.
Two monthly opportunities serve different purposes
| Enrollment opportunity | What it can allow |
|---|---|
| Dual/LIS Special Enrollment Period | Eligible people can elect a stand-alone Part D plan once per calendar month. |
| Integrated Care Special Enrollment Period | Eligible full-benefit Medicaid members can join a qualifying integrated D-SNP, with applicable Medicaid-plan alignment. |
| Other enrollment periods | Annual or event-specific opportunities may permit other changes. |
The older quarterly description is outdated
CMS replaced the former quarterly Dual/LIS enrollment opportunity starting in 2025. A current enrollment decision should use the newer rules, not an older article describing one change during each of the first three calendar quarters.
The integrated-care option requires more than having a Medicaid card. Verify full-benefit Medicaid status, the D-SNP's eligibility for that enrollment period and any relationship to the member's Medicaid managed care organization.
Check the consequences before submitting a change
Joining a stand-alone Part D plan can end enrollment in many Medicare Advantage plans and return the person to Original Medicare. Do not treat the change as simply adding an extra benefit to the existing plan.
Compare doctors, hospitals, services and coordination with Medicaid before choosing a new arrangement. Confirm the effective date and what happens to existing authorizations or care-management support.
Get the enrollment basis confirmed
Ask the plan, Medicare or an independent SHIP counselor to identify the exact enrollment period and required documents. Keep proof of Medicaid or Extra Help status and the enrollment confirmation. Being eligible for a special period does not by itself establish that every advertised D-SNP is available or appropriate.
Related coverage questions
- Medicare and Medicaid: Different Programs, Coordinated Help
- How to Apply for Medicaid: Eligibility and Documents
- How to Compare Medicare Advantage Plans: A Practical Worksheet