A time outside the yearly Open Enrollment Period when you can sign up for health insurance. You qualify for a Special Enrollment Period if you’ve had certain life events, including losing health coverage, moving, getting married, having a baby, or adopting a child. If you qualify for an SEP, you usually have up to 60 days following the event to enroll in a plan. If you miss that window, you have to wait until the next Open Enrollment Period to apply. You can enroll in Medicaid and the Children’s Health Insurance Plan (CHIP) any time of year, whether you qualify for a Special Enrollment Period or not. Job-based plans must provide a special enrollment period of at least 30 days.