Washington University School of Medicine studied 59.5M Medicare beneficiaries in 2019 and 63.2M in 2022.
Chronic conditions were coded less often after COVID-19, changing mortality links and risking bias in claims-based research.
jamanetwork.com/journals/jam...
This cross-sectional study examines chronic conditions and mortality in fee-for-service Medicare and Medicare Advantage in 2019 and 2022, before and after the COVID-19 pandemic.
