Health insurer Elevance has filed a lawsuit against the federal government over $115 million it says is linked to Medicare Advantage star ratings that were not calculated appropriately by the Centers for Medicare & Medicaid Services, according to reporting by STAT News.
The Core of the Dispute
The case centers on how CMS arrived at Elevance's star ratings under the Medicare Advantage program. Elevance alleges the agency's methodology was flawed, and the financial stakes attached to that disagreement amount to $115 million, according to STAT News.
Star ratings in Medicare Advantage carry direct financial consequences for insurers. The rating system is used by CMS to determine payment adjustments, meaning that how a plan is scored can materially affect the revenue it receives. Elevance's lawsuit reflects the view that the agency's calculations did not follow appropriate procedures in its case.
Broader Tensions Between Insurers and Regulators
The lawsuit is the latest sign of friction between private insurers participating in Medicare Advantage and federal regulators over the methodology underpinning the star rating system. As STAT News noted, the case highlights ongoing tensions between insurers and CMS regarding how ratings are determined and how those determinations translate into payment outcomes.
Medicare Advantage, the privately administered alternative to traditional Medicare, has grown substantially in recent years, making the financial implications of rating disputes increasingly significant for both insurers and the federal government. Disagreements over rating methodology are not new to the industry, but litigation of this scale draws attention to how consequential those methodological choices can be.
What the Lawsuit Alleges
Elevance's central allegation is that CMS did not apply its star rating calculations correctly when assessing the insurer's plans. The $115 million figure represents the amount Elevance is contesting in the suit, according to STAT News. The insurer's legal action signals that internal or administrative remedies were either exhausted or deemed insufficient to resolve the dispute.
The star rating system has long been a point of contention within the Medicare Advantage market. Insurers have periodically challenged CMS determinations through various channels, and litigation, while less common, has occurred when other avenues have not produced satisfactory outcomes.
Significance for the Medicare Advantage Market
Because star ratings influence payment structures across the Medicare Advantage landscape, legal challenges to the methodology used to produce those ratings can have implications beyond any single insurer. A court ruling on how CMS must calculate ratings — or on what procedural standards apply — could affect how the agency administers the system more broadly.
The outcome of Elevance's lawsuit may therefore be watched closely by other insurers operating in the Medicare Advantage market, particularly those that have raised similar concerns about rating methodologies in the past. The case, as reported by STAT News, remains in its early stages, and the full scope of the legal arguments has not yet been publicly detailed.