Private insurers involved in the government's Medicare Advantage program made hundreds of thousands of questionable diagnoses that triggered extra taxpayer-funded payments, including wrong ones, from 2018 to 2021, a Wall Street Journal analysis found.

Private insurers involved in the government’s Medicare Advantage program made hundreds of thousands of questionable diagnoses that triggered extra taxpayer-funded payments, including wrong ones, from 2018 to 2021, a Wall Street Journal analysis found.