Alignment Healthcare Sues CMS After Share of Members in Plans Rated Four Stars or Higher Falls to 25%
Alignment Healthcare sued CMS, alleging unlawful calculation of 2027 Medicare Advantage star ratings, which dropped its 4+ star plans to 25% from 100%. The lawsuit claims CMS violated the Administrative Procedure Act. A TD Cowen analyst estimated potential 2028 revenue loss of over $170 million. CMS has not responded, and the case is pending.
How this was made

The 30-second read
Why it matters
The legal challenge could alter quality bonus payments for 2028, impacting Alignment's revenue and potentially setting precedent for other insurers.
Market read
The lawsuit introduces regulatory risk to the Medicare Advantage sector, with possible revenue impact for Alignment and peers.
What to watch
The lawsuit may prompt broader regulatory scrutiny of star rating calculations, affecting all MA providers.
Background
Alignment Healthcare, a Medicare Advantage insurer, sued CMS over the 2027 star rating calculations after its rating share fell dramatically.
Market effects
Potential pressure on Medicare Advantage insurers as star rating methodology faces legal challenge.
US healthcare sector may see heightened volatility during open enrollment period.
Limited; primarily affects US Medicare Advantage market.
Counterpoint
If CMS adjusts methodology favorably, Alignment could recover lost bonus revenue and rebound.
Key entities
- companyAlignment Healthcare
Medicare Advantage insurer filing lawsuit against CMS.
- government_agencyCMS
Centers for Medicare & Medicaid Services overseeing star ratings.

