On May 9, 2019, the Louisiana Supreme Court issued an important opinion restricting application of the collateral source rule in personal injury lawsuits. In Simmons v. Cornerstone Investments, LLC, et al., 2018-CC-0735 (La. 5/8/19), the Court held the collateral source rule inapplicable to medical expenses charged above the amount actually paid by a workers’ compensation insurer pursuant to the workers’ compensation medical fee schedule.