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This past March, as in many Marches previous, MedPAC’s annual report to Congress found that a) the federal government is paying Medicare Advantage plans more than it would pay to cover the same enrollees in traditional, fee-for-service Medicare; b) that excess payment is widening (from 104% in 2022 to 106% this year); c) almost all the excess payment (almost 5 percentage points) stems from a risk adjustment system that enables MA plans inflating their enrollees’ risk scores, and d) the risk score gap between MA enrollees and FFS enrollees is also widening.
Sum it all up, and risk adjustment stands out as the engine by which MA is swallowing FFS Medicare. 2023 is the first year in which more Medicare enrollees are enrolled in MA than in FFS. MedPAC raises the possibility that in some counties at least FFS may no longer serve as a reliable benchmark for CMS’s capitated payment rates to MA plans. Those benchmarks - -which, according to MedPAC, also require adjustment — are the tether that hold MA provider payment rates close to those set by FFS Medicare. That tether is basically the only effective control on provider payment rates.
A modest proposal: Revenue-neutral risk adjustment in MA
MA insurers’ inflation of their enrollees’ risk scores is so obvious and pervasive that CMS is statutorily required to shave a minimum of 5.9% off of MA risk scores. It’s not enough. MedPAC estimates that in 2022 MA risk scores exceeded the scores that MA enrollees would be ascribed in FFS Medicare by 10.8%. In November 2021, Richard Kronick, a former CMS official and current professor at UCSD, and F. Michael Chua, also of UCSD, pegged the MA coding excess at 20% — almost double the MedPAC estimate — and estimated that the resulting overpayments would total $600 billion from 2023 to 2031 if not adjusted.
