The purpose of this document is to identify codes and standards that could provide the greatest benefit for the advanced reactor design types being developed today, and to prioritize them so that the most beneficial codes and standards are developed first. Prioritization is based on the benefit to potential NRC applicants in terms of facilitating the licensing process and reducing design, component fabrication, facility construction and plant operating costs. Prior activities by the Oak Ridge National Laboratory (ORNL), American Nuclear Society (ANS) and NRC identified technical areas that warrant additional research and development to support standards development activities and a lengthy list of standards that need levels of revision to support the deployment of advanced reactors. Building on those activities, the tables contained herein list prioritized codes and standards and include descriptions of their content to explain the rationale of the specific changes needed to facilitate application to advanced reactors.