Medicare

Original Medicare

Original Medicare provides broad provider access nationwide with no referrals required but lacks an out-of-pocket maximum, making supplemental coverage important.

Last reviewed: May 2026 · Editorial methodology

Definition

Original Medicare refers to the traditional fee-for-service Medicare program operated directly by the federal government under the Centers for Medicare & Medicaid Services (CMS), consisting of Part A (hospital insurance) and Part B (medical insurance). Unlike Medicare Advantage, Original Medicare is not offered by private insurers — it is administered directly by CMS and paid for through federal funds and beneficiary premiums. Original Medicare allows beneficiaries to see any doctor, specialist, or hospital that accepts Medicare nationwide, without referrals and without network restrictions, providing maximum provider flexibility. The significant limitation of Original Medicare is the absence of an annual out-of-pocket maximum: because Part B cost-sharing is 20% of Medicare-approved amounts with no cap, a catastrophic illness can result in unlimited patient liability. This gap is the primary reason most Original Medicare beneficiaries purchase Medigap (Medicare Supplement Insurance) to cap their exposure. Original Medicare does not include prescription drug coverage — beneficiaries must add a stand-alone Part D plan for drug benefits.

Where this term matters

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Tip

Glossary definitions are educational. Always check your own policy language — insurers can define common terms differently from one another. When in doubt, request a written explanation from your agent.

Related terms

Medicare Part AMedicare Part A is premium-free for most beneficiaries and covers inpatient care, but comes with significant cost-sharing including a per-benefit-period deductible.Medicare Part BMedicare Part B charges a monthly premium — $202.90 in 2026 for most beneficiaries — and covers the outpatient medical services that Part A does not.Medicare Part C (Medicare Advantage)Medicare Advantage plans deliver all Original Medicare benefits through private insurers and frequently include prescription drug coverage, dental, vision, and hearing benefits.MedigapPrivate Medicare supplement insurance that fills gaps in Original Medicare's coverage.Medigap Plan GMedigap Plan G is the gold standard supplemental coverage for new Medicare beneficiaries, leaving only the $283 Part B deductible as out-of-pocket exposure.

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Source: Cover Forge USA editorial team|Last verified: May 2026|Methodology
Definitions are educational and may be simplified. Always refer to your policy contract and consult a licensed agent for terms that affect coverage decisions.
CF

Cover Forge USA Editorial Team

Editorial Lead

This article was researched and written by the Cover Forge USA editorial team against federal sources (NAIC, CMS, FEMA, DOL, SSA, state DOIs) and standard policy forms. Bylines organize content by topic — they do not assert individual licensure. See our editorial-policy for details.

Reviewed June 2026

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