108 Medicare Terms Defined

Medicare Glossary

Plain-English definitions for every Medicare term — from ABN to ZIP enrollment. No jargon, no confusion.

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O

Observation Status

Part B

A classification used when a hospital monitors your condition before deciding whether to formally admit you. Even if you stay overnight, observation status is considered outpatient care (Part B), not inpatient (Part A). This distinction matters for skilled nursing facility eligibility.

Also known as: Outpatient observation

Original Medicare

Medicare Basics

The traditional fee-for-service Medicare program offered directly through the federal government, consisting of Part A (hospital insurance) and Part B (medical insurance). Under Original Medicare, you can go to any doctor or hospital that accepts Medicare.

Also known as: Traditional Medicare, Fee-for-service Medicare

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