CMS updates the NCCI Policy Manual for Medicare Services once a year. The NCCI Policy Manual should be used by Medicare Administrative Contractors (MACs) as a general reference tool that explains the rationale for NCCI edits. The most current policy manual, effective Jan. 1, 2023, was posted on Dec. 1, 2022. Additions and revisions to the manual are noted in red font. Additional prior versions of the National Correct Coding Initiative Policy Manual for Medicare Services are available in the Medicare NCCI Policy Manual Archive.