First adjudication made by an insurance carrier or fiscal intermediary (FI) following a request for Medicare payment or the first determination made by a peer review organization either in a prepayment or postpayment context.

Under a Medicare Part D plan, this phrase means the plan covers the first $2250 of total drug costs (the amount the insured and plan pays).

For Medicare beneficiaries, this is a time 3 months immediately before a person is entitled to Medicare Part A and enrolled in Part B. If he or she chooses to join a Medicare health plan during the initial coverage election period, the plan must accept him or her. The only time a plan can deny enrollment during this period is when it has reached its member limit. This limit is approved by the Centers for Medicare and Medicaid Services (CMS). The initial coverage election period is different from the initial enrollment period (IEP). See election period .

One of four periods during which an individual can enroll in Medicare Part A. The IEP is the first chance the person has to enroll in Medicare Part A. This period starts 3 months before he or she first meets all the eligibility requirements for Medicare and continues for 7 months. Also see annual enrollment period (AEP), general enrollment period (GEP), open enrollment period (OEP), special enrollment period (SEP) , and transfer enrollment period (TEP) .

Feedback form sent to the Medicare beneficiary when he or she becomes eligible for Medicare to learn if he or she has other insurance that should pay the medical bills before Medicare.

First time an individual goes to see a physician for objective inspection and/or testing of organ systems or body areas to prevent the occurrence of illness, injury, and disease.