Insurer-specific (guaranteed issue) · Private insurance companies
Application exercising guaranteed issue rights when leaving an MA plan, losing employer coverage, or plan discontinuation. 63-day window applies.
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Mail to the Medigap insurer
Inform the insurer of your guaranteed issue right and provide documentation of the qualifying event.
Through a licensed agent or your SHIP counselor
https://www.shiphelp.org/Filing Deadline
Typically 63 days from the qualifying event (e.g., losing employer coverage, MA plan leaving your area, plan violation). Some events have different windows.
1-2 weeks. No medical underwriting — you cannot be denied.
The insurer must accept your application at the standard rate without medical underwriting. Coverage starts based on the effective date of the qualifying event.
CMS-40B · CMS
Application for enrollment in Medicare Part B (medical insurance). Used during Initial Enrollment, General Enrollment, or Special Enrollment Periods.
CMS-L564 · CMS
Employer verification of group health plan coverage dates. Required alongside CMS-40B when using a Special Enrollment Period after employer coverage ends.
CMS-10797 · CMS
Application for Medicare Part A and Part B during a Special Enrollment Period for exceptional conditions such as natural disasters or employer misinformation.
CMS-10798 · CMS
Application for Part B immunosuppressive drug coverage for individuals who lose Part B but need ongoing immunosuppressive drug coverage after a kidney transplant.
Plan-specific (CMS model template) · CMS
Model enrollment form for Medicare Advantage or Part D prescription drug plans. Plans customize the CMS template but must include all required elements.
CMS model disenrollment form · CMS
Request to disenroll from a Medicare Advantage or Part D plan and return to Original Medicare. Available during applicable enrollment periods.
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