Enrollment is the process of joining or "buying" a health plan, which you do during a time period called open enrollment. Once you are enrolled, you will generally only be able to change your health plan once a year, during open enrollment. You may be able to make changes to your health plan at other times of the year if you have a major life event, such as getting married or adding a child to your family.

WebMD Medical Reference Reviewed by Sarah Goodell on June 19, 2019
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