Health Affairs

Medicare Advantage Payment & Coding Fights Intensify

The Health Affairs podcast episode focused on the escalating dispute over Medicare Advantage (MA) payments and the role of diagnostic coding intensity. Host Jeff Buyers and AEI scholar Ben Epilo explained that the federal government spends roughly 14% more on beneficiaries enrolled in MA plans than on those in traditional Medicare, a gap driven by favorable selection and aggressive coding practices that boost risk‑adjustment payments. Epilo highlighted a recent CMS initiative that stripped about 2,000 diagnosis codes deemed primarily cost‑inflating, aiming to blunt upcoding. A Health Affairs Scholar study suggested that, had the rule been in place earlier, coding intensity—and associated excess spending—could have been dramatically reduced. The debate intensified after a Wall Street Journal editorial accused MedPAC of overstating the problem and even called for its defunding, prompting push‑back that MA plans do generate savings through network restrictions and prior authorizations, not merely inflated codes. Key moments included Epilo’s clarification that the WSJ piece misread the study, the citation of Michael Chernew’s work aligning CMS and MedPAC estimates, and the observation that every regulatory tweak prompts insurers to re‑optimize their coding strategies. The conversation underscored the political divide—Republicans favoring market‑based MA, Democrats preferring traditional Medicare—while noting MA now covers over half of Medicare beneficiaries, making reforms politically salient. Looking ahead, the panel warned that the coding battle is far from settled; risk‑adjustment models will continue to evolve, and insurers will adapt, potentially reshaping plan generosity, market entry, and enrollment trends. Policymakers must monitor these dynamics to balance fiscal responsibility with beneficiary welfare as MA’s share of the Medicare landscape grows.