The Social Security Act amendments provide for the special enrollment period (SEP) beginning 11/84 for the working aged and 1/87 for the disabled. The SEP is the period
for enrollment in SMI and/or Premium-HI that is provided for individuals who:
are eligible for SMI and/or Premium-HI on the basis of age or as disabled beneficiaries,
have been (or are currently) covered by a group health plan (GHP) or a large group
health plan (LGHP) based on current employment status.
NOTE: Individuals with end-stage renal disease (ESRD) are not eligible for the SEP or premium surcharge rollback. This includes individuals who
are dually-entitled to Medicare based on ESRD and age or disability.