On May 29, 2026, Massachusetts Attorney General Andrea Joy Campbell filed suit against UnitedHealthcare, alleging that the nation’s largest insurer manipulated the health statuses of MassHealth members to extract inflated payments from the state’s Medicaid program. The complaint estimates the scheme cost MassHealth at least $100 million.
The allegations are stark. According to the AG’s office, United systematically miscoded members enrolled in its Senior Care Options (SCO) plan, a program serving residents aged 65 and older, assigning them to higher-acuity care levels they did not qualify for. This included allegations of attributing behavioral health and substance abuse diagnoses to members with no corresponding diagnosis or treatment history, improperly classifying members as needing higher levels of care than they did, and falsely representing that members required daily skilled nursing services when most did not need or get that care. The complaint alleges that these were not inadvertent errors but the product of a “growth-at-all-costs strategy” that incentivized overloaded field nurses to code members as sicker than they were.
According to the complaint, United has known of problems for years, including through its own internal reviews that revealed miscoding, field nurse complaints, and government audits.
If this scheme sounds familiar, it should. The core conduct alleged here, inflating health conditions to generate higher capitated payments, is the defining fraud theory in Medicare Advantage (MA) enforcement, and it has become one of the most active areas of False Claims Act (FCA) litigation.
Under MA, private insurers receive monthly payments from the federal government that are adjusted for the health status of their enrollees, commonly called “risk adjustment.” In general, the sicker the member is on paper as reflected by their reported health conditions, the higher the payment to the health plan. That structure creates powerful financial incentives to upcode diagnoses, mine medical records for additional conditions, and document illnesses that may never be treated.
Recent federal enforcement and political attention highlight the scale of the problem. In January 2026, Kaiser Permanente agreed to pay a staggering $581 million in the largest FCA settlement under MA (also called Medicare Part C). Regulators like DOJ and HHS-OIG have repeatedly declared MA risk adjustment as a top enforcement priority. And a Senate Judiciary Committee report on UnitedHealth Group’s MA practices blasted the company for “turn[ing] risk adjustment into a major profit centered strategy, which was not the original intent of the program.” And now, Massachusetts AG’s lawsuit targets United for very similar alleged misconduct in the Medicaid context.
The Massachusetts lawsuit is a meaningful signal that state attorneys general are not waiting for federal prosecutors to act. Medicaid, unlike Medicare Advantage, is a joint federal-state program, and states have both the authority and the financial incentive to pursue their own recoveries. For managed care organizations operating Medicaid plans, the message is clear: The intense scrutiny that has reshaped compliance in the MA market is coming to Medicaid managed care.
Investigations into complex healthcare fraud depend heavily on insiders — people within health plans, provider networks, at clinical vendors, or in compliance departments who observe the conduct firsthand and have the courage to report it.
Under the federal False Claims Act and parallel state statutes, whistleblowers who file qui tam lawsuits on behalf of the government are entitled to a share of any recovery — typically between 15 and 30 percent. Qui tam filings hit record levels in fiscal year 2025, and the DOJ reported that FCA settlements and judgments exceeded $6.8 billion for the year — the highest annual total ever recorded, with the vast majority tied to healthcare fraud.
If you work in a managed care organization and have observed manipulation of member health assessments, diagnosis coding practices designed to inflate risk scores, or internal reviews revealing overpayments that were never disclosed to payors, you may have information that could form the basis of a whistleblower claim.
The Massachusetts AG's lawsuit against UnitedHealthcare is a reminder that this conduct has consequences. The people best positioned to uncover it are often the ones already inside the room.
Whistleblower Partners LLP represents individuals with knowledge of fraud against federal and state healthcare programs. Contact us for a confidential consultation.
