The Relative Value Scale Update Committee (RUC) plays a critical role in determining physician payment. When the Centers for Medicare and Medicaid Services (CMS) transitioned to paying physicians based on the Resource-Based Relative Value Scale, the American Medical Association developed this unique multispecialty committee. Physicians at the RUC determine the resources required to provide physician services and recommend appropriate payment for those services. The RUC then submits its recommendations to CMS. Physicians have thus been important in determining relative value and hence payment for the services they provide.