A qualifying life event can open a Special Enrollment Period to change your Medicare coverage outside the normal windows. Here's exactly what applies when you have Medicaid or Extra Help.
Quick answer: If you have Medicaid or qualify for Extra Help (the Part D Low-Income Subsidy), you get a Special Enrollment Period to change your drug coverage. Under the rule effective January 1, 2025, you can use it once per month — replacing the old quarterly window.
Join, switch, or drop a standalone Part D prescription drug plan, or move to Original Medicare with a drug plan. A separate integrated-care SEP lets full-benefit dual-eligible members move into an aligned dual-eligible special needs plan (D-SNP) once a month. Note: these SEPs do not allow switching into a non-D-SNP Medicare Advantage plan.
A change made in a given month generally takes effect the first day of the next month.
People who have full or partial Medicaid (dual-eligible), and people who qualify for the Part D Extra Help / Low-Income Subsidy. This is one of the most valuable mid-year SEPs and is frequently underused.
Our free enrollment finder walks through your situation and points you to the right Medicare window — no signup, no email.
Open the Enrollment Finder →Since January 1, 2025, people with Medicaid or Extra Help can use the dual/LIS Special Enrollment Period once per month to join or switch a standalone drug plan, with the change effective the first of the next month. This replaced the older once-per-quarter rule.
No. The dual/LIS SEP and the integrated-care SEP do not allow enrollment into, or switching between, non-D-SNP Medicare Advantage plans. The monthly election is for standalone drug plans and, for full-benefit dual-eligibles, aligned dual-eligible special needs plans.
Special Enrollment Periods are short and event-driven — miss one and the client waits months. A dated SEP log is the difference between a saved client and a lost one. This page is free to share. The Medicare SEP Tracker gives you a ready-made spreadsheet to log every client's qualifying event and deadline so nothing slips.
See the Medicare SEP Tracker on Etsy →These windows are based on U.S. government Medicare enrollment rules: