GRHCPCS Level II

This service was performed in whole or in part by a resident in a department of

Related modifiers

Frequently asked questions

What does modifier GR mean?

This service was performed in whole or in part by a resident in a department of

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.