Policy Research
CMS Requires More Restrictive Definition of Medical Frailty in New Medicaid Work Requirements Rule
On June 1, the Centers for Medicare and Medicaid Services issued an interim final rule on Medicaid work requirements that adopts a restrictive definition of medical frailty — differing from states’ early expectations. KFF’s Jennifer Tolbert explains why the more restrictive definition of medical frailty adopted by the Trump Administration will be challenging for states to implement and could lead to more people falling through the cracks and losing coverage.
affordable care act
How Has Insurer Participation in the ACA Marketplaces Changed in 2026?
This brief features maps showing how insurer participation has changed at the state and county level from 2025 to 2026 and insight into the number of issuers offering plans at specific metal levels.
policy spotlight
Explore the Basics of U.S. Health Policy
Health Policy 101 is a comprehensive guide covering fundamental aspects of U.S. health policy and programs, including Medicare, Medicaid, the Affordable Care Act, employer-sponsored insurance, racial and ethnic disparities, and more. The chapters can be downloaded in a PDF format for faculty and student use, and the information will be updated annually or as data and circumstances change.