Mar 09, 2020 · Payer-to-Payer Data Exchange: CMS-regulated payers are required to exchange certain patient clinical data (specifically the U.S. Core Data for Interoperability (USCDI) version 1 data set) at the patient’s request, allowing the patient to take their information with them as they move from payer to payer over time to help create a cumulative health record with their current ….