Effective January 1, 2015, CMS has introduced four new modifier subsets of the -59 Modifier in order to better define a “Distinct Procedural Service”. Currently providers can utilize modifier -59 to indicate that a CPT code is separate but distinct from another service that could be bundled. CMS feels that this modifier’s usage has been applied broadly and as such has been applied incorrectly by providers. High levels of abuse and fraud have been associated with this modifier. The primary issue with the -59 modifier is that it is defined for use in a wide variety of circumstances such as different encounters, anatomical sites and distinct services.
The four new HCPCS subsets of the -59 Modifier are:
XE- separate encounter
XP- separate practitioner
XU- unusual non-overlapping service …(Read More Here)