Boston Judge Blocks CMS 'Medically Frail' Definition in Medicaid Work Rules

Key points

• Judge Richard Stearns ruled that CMS's June guidance on 'medically frail' definitions is contrary to law and beyond the agency's powers.
• The ruling blocks the requirement for patients to prove their conditions 'significantly impair' their ability to meet the 80-hour monthly work or community engagement mandate.
• The decision leaves the rest of the Medicaid work requirements in place, with national enforcement beginning in January 2027.
• States must wait at least six months after the work rules take effect before canceling insurance for those claiming a medical exemption.
• The judge upheld the government's 12-month lookback on medical evidence and its policy allowing states to reject self-attestation of medical frailty.

Background

The One Big Beautiful Bill Act of 2025 mandated that Medicaid expansion recipients work, volunteer, or attend school for 80 hours a month to maintain coverage, with an exemption for those 'medically frail.' Earlier coverage noted that states like Nebraska faced significant coverage losses and bureaucratic chaos during early implementation attempts, highlighting the administrative burdens of these rules. The current legal battle stems from the tension between Congress's broad exemption for the medically frail and CMS's narrower administrative interpretation.

How outlets are covering it

Politico reports that Judge Stearns sided with 25 Democratic-led states and D.C., finding the CMS guidance unlawful. The AMA and public health scholars, in amicus briefs, argue that CMS's requirement to prove 'significant impairment' is an administrative overreach that creates barriers for patients with fluctuating symptoms. They emphasize that physicians are not trained to make vocational assessments. Conversely, the Trump administration and CMS defended the 12-month lookback on medical evidence and the option for states to reject self-attestation, arguing these measures prevent fraud and are not arbitrary. The judge agreed with the government on these specific points, noting that disagreement with agency policy does not make it unlawful.

Why it matters

This ruling prevents the immediate disenrollment of millions of vulnerable individuals with chronic illnesses who might not meet CMS's strict definition of 'medically frail.' It preserves access to care for those with complex conditions, avoiding a surge in emergency room visits and unmanaged chronic diseases. The decision also reduces the administrative burden on healthcare providers, who were concerned about spending time on eligibility paperwork instead of patient care. It sets a precedent for the limits of federal agency authority in interpreting congressional mandates for social safety nets.

What to watch

States have six months after the January 2027 start of the work rules to update their verification systems to comply with the ruling. The remaining work requirements, including the 80-hour mandate and the 12-month lookback on medical evidence, will take effect as scheduled. A separate lawsuit in Maryland challenging the policy remains pending. Eight states have already rejected the one-year grace period for self-attestation and will require documentation in 2027. CMS has not yet responded to the ruling.