Testing New Codes to Capture Post-Operative Care.

The Centers for Medicare & Medicaid Services (CMS) uses the resource-based relative value system to determine payment for physicians and nonphysician practitioners for their professional services. For many surgeries and other types of procedures, Medicare payment includes pre- and post-operative visits delivered during a global period of 10 or 90 days. Congress mandated that CMS collect data on the "number and level" of visits in the global period from a representative sample of physicians beginning January 1, 2017. At CMS's request, RAND developed a new set of nonpayment codes that could be used to capture the number and level of visits. In July 2016, CMS issued a proposed rule that included a slightly modified version of the codes developed by RAND and proposed to require their use by practitioners. Given that these codes had never been tested or used by practitioners, CMS asked RAND to pilot the proposed codes to determine whether practitioners understood and could accurately apply the codes. RAND's approach was to create a series of vignettes and to test the use of these vignettes using semi-structured interviews with a small set of physicians, followed by more-extensive testing through surveys with a larger group of physicians. This study provides recommendations on how to use vignettes to test new codes and uncover questions about such codes. Such input could be used to help refine instructions for using codes, as well as to potentially refine the codes themselves.