Coding Update: Modifiers XE, XP, XS, and XU Effective 01/01/2015

Effective January 1, 2015, CMS has created four new HCPCS modifiers that will selectively identify subsets of modifier 59 for Distinct Procedural Services as follows:

•  XE Separate Encounter: a service that is distinct because it occurred during a separate encounter
•  XP Separate Practitioner: a service that is distinct because it was performed by a different practitioner
•  XS Separate Structure: a service that is distinct because it was performed on a separate organ/structure
•  XU Unusual Non-Overlapping Service: the use of a service that is distinct because it does not overlap usual components of the main service

Beginning with claims for dates of service on or after January 1, 2015, the Health Plan will accept these new modifiers. We will apply edits to the modifiers equivalent to our modifier 59 edits with our February quarterly update for claims processed on or after February 16, 2015. Prior to the February 16, 2015 update, these modifiers will be considered informational and will not be used to override an edit.