Definitions for "INITIAL ENROLLMENT PERIOD"
The Initial Enrollment Period is the first chance you have to enroll in Medicare Part B. Your Initial Enrollment Period starts three months before you first meet all the eligibility requirements for Medicare and lasts for seven months.
The first chance you have to enroll in Part A or Part B, if you don't get it automatically. If you enroll during this time, which begins three months before you first meet the eligibility requirements for Medicare and continues for seven months, you do not pay a premium penalty.
The period of time during which a person is first eligible to enroll under the contract. It starts on the date of the person's initial date of eligibility and ends several weeks later.