Two settlements. Roughly $674 million in one quarter. Record penalties against Kaiser and Aetna moved Medicare Advantage risk adjustment from a compliance question to a balance-sheet risk, and DOJ has named MA fraud its top enforcement priority for 2026. See what RADV audit litigation means for health plans, and hear from the attorneys arguing these cases at RISE West.
Why this matters now
Risk adjustment enforcement has crossed a line. What health plans once treated as a coding-accuracy question now lands on the balance sheet as nine-figure liability.
In January 2026, five Kaiser Permanente affiliates agreed to pay $556 million to resolve False Claims Act allegations tied to unsupported diagnosis codes submitted for Medicare Advantage enrollees. The figure stands as the largest FCA settlement connected to MA risk adjustment on record. Two months later, Aetna agreed to pay $117.7 million to resolve allegations of submitting or failing to delete inaccurate diagnoses, including morbid obesity codes, across payment years 2018 through 2023. Two settlements, roughly $674 million, inside one quarter. Boards noticed.
What changed
The Department of Justice has named Medicare Advantage fraud its top enforcement priority, with risk adjustment at the center. The DOJ False Claims Act Working Group has flagged coding accuracy, network adequacy, and access to care. In February 2026, the OIG issued its first Medicare Advantage-specific compliance program guidance since 1999, and the 2026 OIG Work Plan added a review comparing the V24 and V28 risk adjustment models.
Both the Kaiser and Aetna matters turn on the same fact pattern. Retrospective chart reviews and addenda processes stood accused of adding revenue-generating codes while leaving unsupported diagnoses in place. Regulators treat the failure to delete as squarely within FCA reach, not solely the act of submitting.
Why this matters for health plans
FCA exposure now reads as a financial risk with board-level visibility, not a compliance footnote. Three shifts stand out.
Settlement sizes have reset expectations for what a single risk adjustment matter costs. Whistleblowers remain the engine behind these cases. A coding auditor's qui tam complaint drove the Aetna matter, earning a $2 million relator share, while Kaiser relators will receive roughly $95 million. Coding staff and auditors see the same documentation gaps regulators later scrutinize. Legal experts also warn the themes will not stop at coding. Attorneys tracking the docket point to a possible expansion into Star Ratings enforcement, widening the surface area for plans already managing RADV audit pressure.
Questions defining the moment
For risk adjustment, quality, and compliance leaders, a few questions define the moment. Which fact patterns do courts and regulators view as credible violations at the pleading stage? Where does failure to correct create liability separate from active submission? How far will enforcement reach beyond risk adjustment into Stars? The answers shape defense strategy and reserve planning alike.
Hear from the attorneys shaping this at RISE West
These questions sit at the core of an Extended Insight Session at RISE West: "RA Litigation Today: What Lawyers Say About Risk, Enforcement, and Exposure." The session features Ari Yampolsky, Partner at Whistleblower Partners LLP, Brian Boynton, Partner at WilmerHale, and Jason Silberberg, Partner at Frier Levitt. They will map where MA fraud litigation heads next, break down recent FCA cases and OIG audit trends, and identify which themes gain traction at the pleading stage and which do not. A live Q&A will put your real-world compliance and risk-mitigation questions in front of the attorneys arguing these cases. Join them at RISE West.
Sources: DOJ — Aetna Agrees to Pay $117.7 Million, KFF Health News — Kaiser $556 Million Settlement, Whistleblower Law Collaborative — MA Fraud Enforcement in the Spotlight, Sidley — OIG Medicare Advantage Compliance Program Guidance