The Medicare Foundation on Syam Adusumilli

The Trust Fund Clock

Sun, 15 Mar 2026 00:00:00 +0000

MCR-00.01 — Series 0: The Structural Baseline
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Medicare Policy Analysis | March 2026
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Every major Medicare policy decision made in 2025 and 2026 traces back to a single structural fact: the program’s largest trust fund is running out of time. Not metaphorically. On the current trajectory, the Hospital Insurance Trust Fund will be depleted in 2033. When that happens, Medicare will be legally prohibited from paying full Part A benefits. Providers will face automatic payment cuts of roughly 11 percent the day it occurs.

Summary: The Trust Fund Clock

Sun, 15 Mar 2026 00:00:00 +0000

The Hospital Insurance Trust Fund will be depleted in 2033, according to the 2025 Medicare Trustees Report, a date that moved up three years from the prior year’s projection. At depletion, incoming revenues will cover only 89 percent of scheduled Part A benefits, and CMS will have no legal authority to make up the difference. Inpatient hospital care, skilled nursing, home health, and hospice will face automatic payment cuts. The One Big Beautiful Bill Act, signed July 4, 2025, may accelerate the timeline by an additional year to 2032 by eliminating Social Security benefit taxation for most recipients, reducing an indirect revenue flow to the HI Trust Fund.

Original Medicare as Policy Choice

Sun, 15 Mar 2026 00:00:00 +0000

MCR-00.02 — Series 0: The Structural Baseline
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Medicare Policy Analysis | March 2026
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The dominant assumption in Medicare policy discourse has been, for more than a decade, that Medicare Advantage is the direction of travel. Enrollment crossed 50 percent of beneficiaries in 2024. The 2025 Trustees Report projects MA will cover 57.8 percent of Medicare beneficiaries by 2034. Supplemental benefits, dental, vision, over-the-counter allowances, transportation, have been powerful enrollment drivers. The political consensus across administrations has treated MA growth as a durable feature of the program’s architecture.

Summary: Original Medicare as Policy Choice

Sun, 15 Mar 2026 00:00:00 +0000

Medicare Advantage enrollment crossed 54 percent of beneficiaries in 2025, and the Trustees project it will reach 57.8 percent by 2034. The dominant assumption in policy discourse has been that MA is the direction of travel. In 2026, that assumption warrants reexamination. Benefits are contracting. Plan exits are accelerating. Prior authorization has been introduced into Original Medicare for the first time through WISeR. Medigap underwriting creates exit barriers most beneficiaries did not understand at enrollment. And ACOs have converted Original Medicare into a more coordinated product than it was a decade ago, competitive on access and quality in many markets.

The Medigap Market

Sun, 15 Mar 2026 00:00:00 +0000

MCR-00.03 — Series 0: The Structural Baseline
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Medicare Policy Analysis | March 2026
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Medigap is the most consequential supplemental insurance market most Medicare policy analysts underanalyze. At roughly 14 million enrollees, it covers approximately a fifth of all Medicare beneficiaries and roughly two-fifths of those in Traditional Medicare. Its pricing rules vary materially by state. Its market is dominated by a single carrier at the national level. Its guaranteed issue architecture, the rules that determine whether a beneficiary can buy it at all, contains a structural asymmetry that effectively locks millions of Medicare Advantage enrollees out of the Traditional Medicare pathway once they have developed serious health conditions.

Summary: The Medigap Market

Sun, 15 Mar 2026 00:00:00 +0000

Medigap covers approximately 14 million enrollees, roughly a fifth of all Medicare beneficiaries and two-fifths of those in Traditional Medicare. Its pricing rules vary by state. Its market is dominated at the national level by a single carrier. Its guaranteed issue architecture contains a structural asymmetry that effectively locks millions of Medicare Advantage enrollees out of the Traditional Medicare pathway once they have developed serious health conditions. In a policy environment where MA benefit contraction is accelerating and plan exits are increasing, the Medigap market is where the practical consequences of beneficiary choice get resolved.

The Medicare Foundation on Syam Adusumilli

The Trust Fund Clock

MCR-00.01 — Series 0: The Structural Baseline #

Medicare Policy Analysis | March 2026 #

Summary: The Trust Fund Clock

Original Medicare as Policy Choice

MCR-00.02 — Series 0: The Structural Baseline #

Medicare Policy Analysis | March 2026 #

Summary: Original Medicare as Policy Choice

The Medigap Market

MCR-00.03 — Series 0: The Structural Baseline #

Medicare Policy Analysis | March 2026 #

Summary: The Medigap Market

MCR-00.01 — Series 0: The Structural Baseline
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Medicare Policy Analysis | March 2026
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MCR-00.02 — Series 0: The Structural Baseline
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Medicare Policy Analysis | March 2026
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MCR-00.03 — Series 0: The Structural Baseline
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Medicare Policy Analysis | March 2026
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