CWCI research tracks changes in the prevalence and volume of professional medical services in the first 2 years of treatment for indemnity claims in which medical care began between 2014 and 2019. To examine the impact of the pandemic, the authors compare the prevalence and volume of services in the first 6 months of treatment for claims in which treatment began in 2018 and 2019 claims in which treatment began in 2020 and 2021. In both cases, results are broken out for claims with and without surgery.