ModifierGlobal

XU

Unusual Non-Overlapping Service

Official Definition

Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service

Other Global modifiers

E1Upper Left, Eyelid
E2Lower Left, Eyelid
E3Upper Right, Eyelid
E4Lower Right, Eyelid
F1Left Hand, Second Digit
F2Left Hand, Third Digit
GAWaiver of Liability on File
GYExcluded from Medicare Benefits
GZNo Waiver of Liability on File
LTLeft Side
RTRight Side
TCTechnical Component

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Read from: CMS HCPCS Alpha-Numeric (ANWEB) release — October 2026 quarterly update. All data sources · How to read the labels

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources