In most of the United States, you can’t buy health insurance just anytime. The only way to get health insurance if you have missed open enrollment is to experience a qualifying life event. Such events include getting married, having a baby, moving to another state, or losing other health coverage. A Special Enrollment Period (SEP) usually lasts 60 days from the date of the qualifying event. If you miss the open enrollment deadline and do not qualify for a special enrollment period, you might consider a supplemental health insurance plan such as or .