Becker's Healthcare January 14, 2025
Rylee Wilson

CMS is facing a half-dozen lawsuits over its 2025 Medicare Advantage star ratings.

Alignment Healthcare is the latest MA insurer to sue CMS alleging it acted wrongfully when assigning 2025 star ratings. In a complaint filed Jan. 10 in federal court in Washington, D.C., attorneys for the insurer alleged CMS and its contractors made “significant mistakes” in their handling of Alignment’s MA star ratings.

The MA insurer also slammed the agency’s application of the Tukey outlier deletion Rule, a statistical method meant to eliminate extreme outliers from data sets. Alignment attorneys argued the rule is “based on objectively bad data science, and it produces arbitrary and capricious results.”

At least five other insurers have challenged their star ratings...

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