Court strikes down CMS's restrictive 'medical frailty' exemption for Medicaid work requirements

A Massachusetts federal judge has struck down a key piece of the Trump administration's Medicaid work requirements rule — specifically, the CMS's definition of "medically frail." The ruling sided with more than two dozen states and consumer advocates who argued the definition was far too narrow, potentially causing eligible but seriously ill Medicaid enrollees to lose coverage.

Under the GOP's "Big Beautiful Bill" passed last summer, most ACA Medicaid expansion adults must log at least 80 hours per month of work, volunteering, or schooling starting in 2027 to keep their coverage. The law exempted people who are "medically frail," but the CMS's formal guidance raised the bar — requiring individuals to be so sick they cannot comply with work rules, rather than simply being very ill. Judge Richard Stearns vacated that definition, calling enforcement of it a risk of "great hardship" for vulnerable enrollees. States get a six-month grace period before enforcement kicks in.

Key Takeaways:

• The ruling vacates the CMS's "medically frail" definition but upholds two other contested policies: the 12-month lookback window for medical claims data and limits on self-attestation of frailty
• The AMA and America's Physician Groups praised the decision as a win for patients and medical ethics
• The CMS may still appeal, and a separate lawsuit from Medicaid enrollees and provider groups remains pending

Why it matters: With Medicaid work requirements set to begin in early 2027, this ruling injects significant uncertainty into state implementation plans and could reshape how millions of vulnerable enrollees are assessed for exemptions.