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Please note that the definitions included in this Glossary reflect the manner in which these terms are used on Medicare in general.

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Services or expenses that Original Medicare does not cover. Some examples are but not limited to deductibles and coinsurance as well as some coverage like vision, dental, and hearing care.
Primary Care Physicians (PCP’s) will determine when to recommend you to a specialist physician and coordinate ongoing care.
If you missed your Initial Enrollment Period (IEP) and are not eligible for the Part B Special Enrollment Period, the window of opportunity from January 1 to March 31 each year when you can sign up for Medicare Part B for the first time. Beginning on January 1, 2023 when you sign up for Part B during this timeframe, your coverage becomes effective the first day of the following month you signed up.
A drug that was developed to be the exact same as a name-brand drug and was approved by the Food and Drug Administration (FDA). It is identical in terms of dose, safety, potency, method of administration, quality, performance, and intended purpose.
A series of optical examinations that aid in the diagnosis of glaucoma, an eye condition that can impair vision and result in blindness. When fluid accumulates in the front of the eye applying pressure to the inner eye, glaucoma results.


This glossary explains terms in the Medicare program, but it isn't a legal document. The official Medicare program provisions are found in the relevant laws, regulations, and rulings.

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