SEP (Special Enrollment Period)

Full Definition

A Special Enrollment Period (SEP) is an enrollment window outside the standard AEP or ACA OEP, triggered by a qualifying life event (QLE). Common QLEs include: loss of prior coverage (job loss, aging off a parent's plan, losing Medicaid), marriage or divorce, birth or adoption, permanent move to a new coverage area, income change affecting subsidy eligibility (ACA), and dual-eligible or LIS qualification (Medicare). SEP duration varies by trigger — typically 60 days from the event for ACA, 2 months for most Medicare SEPs. SEPs are essential to year-round lead generation in both Medicare and ACA markets; they smooth the revenue curve between AEP and OEP. Medicaid Unwinding (beginning April 2023) generated an unusually large wave of SEP-eligible consumers through 2024.

Related Terms

• ACA (Affordable Care Act) / Marketplace — U.S. federal law (2010) that created the individual health insurance marketplace, premium subsidies, and the open enrollment framework for under-65 major medical.
• Open Enrollment (ACA) — The annual November 1 – January 15 window (on the federal Marketplace) during which consumers can enroll in or change ACA Qualified Health Plans.
• OEP (Medicare Advantage Open Enrollment Period) — The January 1 – March 31 window during which MA enrollees can make a one-time switch to another MA plan or back to Original Medicare + PDP.
• IEP (Initial Enrollment Period) — The 7-month window around a consumer's 65th birthday during which they can first enroll in Medicare Parts A, B, C, and D.
• AEP (Annual Enrollment Period) — The October 15 – December 7 annual window during which Medicare beneficiaries can enroll in, switch, or drop Medicare Advantage and Part D plans.

Where This Applies on InsureLeads

• Medicare Leads
• Medicare OEP Leads
• ACA Open Enrollment Leads
• T65 Leads