STAT+: The IRS is probing UnitedHealth, and a private equity slowdown

The Internal Revenue Service is investigating UnitedHealth, according to a recent regulatory filing. The IRS is seeking to significantly increase UnitedHealth's taxable income for the years 2017 through 2020, and the company may also be forced to pay more for subsequent years after 2020. The investigation could have significant financial implications for the health insurer.