Continued Use of Modifier 59 After January 1, 2015
The Centers for Medicare and Medicaid Services (CMS) has issued additional guidance regarding the new subsets of modifier 59 (i.e. XE, XP, XS, and XU) that became effective January 1, 2015 and the continued use of modifier 59 after January 1, 2015. In the updated guidance, CMS states providers may continue to use modifier 59 after January 1, 2015 in any instance in which it was correctly used prior to January 1, 2015. Additional guidance and education as to the appropriate use of the new modifiers will be forthcoming as CMS continues to introduce the modifiers in a gradual and