Massachusetts attorney general’s lawsuit alleges $100M fraud by UnitedHealthcare

Massachusetts Attorney General Andrea Campbell has launched a blockbuster lawsuit against healthcare behemoth UnitedHealthcare, alleging the insurer perpetrated a massive, years-long fraud scheme worth over $100 million. The suit claims UnitedHealthcare systematically inflated risk scores for its Medicare Advantage members to illicitly boost capitation payments from the federal government, driven by a "growth-at-all-costs" strategy. This legal broadside intensifies the already high-stakes scrutiny on the multi-trillion-dollar Medicare Advantage market, where insurers like UnitedHealthcare derive substantial profits. The AG's complaint, filed June 3, 2026, zeroes in on UnitedHealthcare alleged practice of upcoding patient diagnoses—often via its subsidiary Optum—to secure higher risk adjustment payments, echoing similar federal investigations and settlements against other major Managed care organizations (MCOs). The Centers for Medicare & Medicaid Services (CMS) has recently tightened its oversight, signaling a broader crackdown on MA plan integrity. The lawsuit, filed under the Massachusetts False Claims Act, promises a prolonged and contentious legal battle. Should the allegations prove true, it could trigger significant financial penalties for UnitedHealthcare, reshape how MA plans manage risk adjustment, and embolden other state attorneys general or the federal government to pursue similar actions. The outcome will be closely watched by the entire healthcare industry, as it challenges the fundamental profitability model of Medicare Advantage.