XUHCPCS Level II
Unusual non-overlapping service, the use of a service that is distinct because
- Usage notes
- Use in place of modifier 59 for a service that is unusual and doesn't overlap the usual components of the other service billed.
- Common mistakes
- Treating XU as a generic 'unbundling' modifier rather than reserving it for services that genuinely don't overlap in their usual components.
Related modifiers
X1Continuous/broad services: for reporting services by clinicians, who provideX2Continuous/focused services: for reporting services by clinicians whoseX3Episodic/broad services: for reporting services by clinicians who have broadX4Episodic/focused services: for reporting services by clinicians who provideX5Diagnostic services requested by another clinician: for reporting services by aXESeparate encounter, a service that is distinct because it occurred during aXPSeparate practitioner, a service that is distinct because it was performed by aXSSeparate structure, a service that is distinct because it was performed on a
Frequently asked questions
What does modifier XU mean?
Unusual non-overlapping service, the use of a service that is distinct because
When do I use modifier XU?
Use in place of modifier 59 for a service that is unusual and doesn't overlap the usual components of the other service billed.
What's a common mistake with modifier XU?
Treating XU as a generic 'unbundling' modifier rather than reserving it for services that genuinely don't overlap in their usual components.
HCPCS modifier data from CMS. CPT® is a registered trademark of the American Medical Association — CPT modifier descriptions are not included on this site. Always verify codes with authoritative sources before making billing decisions.