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X Modifiers

Created: 13/31/14 | Updated: 02/26/2015
CMS is establishing the following four new HCPCS modifiers (referred to collectively as X modifiers) to define specific subsets of the 59 modifier:

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

The implementation date for this change is Jan. 1, 2015

Click here for:  X Modifier Tip Sheet

Click the links below to view more examples:

Novitas Solutions--Modifier 59 and New Modifiers XE, XS, XP, XU
Super Coder-- Several Carriers Provide Modifier X{EPSU} Examples
NASPGHAN Winter 2014 Newsletter
Medical Practice Coding Pro, October 2014, Vol. 20, No. 10
SMFM Coding Committee February 2015
Ortho Coder's Pink Sheet, February 2015 Vol. 16, Issue 2
AAPC X Modifiers Guide
HCPro Modifier-59 Changes for 2015
ZHealth March Newsletter- Modifiers for 2015