CMS & OIG Oversight

CMS and OIG oversight is intensifying around Medicare Advantage risk adjustment, with OIG estimating CMS may have overpaid MA plans by $462 million for unsupported acute stroke diagnoses and DOJ-related False Claims Act activity continuing through Matrix Medical Network’s $36.5 million settlement over unsupported MA diagnoses—raising compliance risk for MA plans, vendors, and provider groups tied to coding-driven revenue strategies. At the same time, VBC stakeholders are pushing CMS to refine hospital payment policy and quality incentives through the FY 2027 IPPS/LTCH PPS rulemaking, while CMS’s Medicaid work requirement implementation adds new eligibility and administrative burdens that could disrupt population health management for Medicaid ACOs and safety-net systems. The through-line is a Trump CMS/OIG posture that is pairing payment-model expansion and technical modernization with sharper scrutiny of documentation, eligibility, and diagnosis integrity across MA, Medicaid, and hospital VBC programs (OIG MA stroke overpayments