F5HCPCS Level II
Right hand, thumb
- Usage notes
- Append to procedure codes performed on the right hand, thumb.
- Common mistakes
- Using F5 for a left thumb procedure — F5 is right-hand only; the left thumb uses FA.
Related modifiers
Frequently asked questions
What does modifier F5 mean?
Right hand, thumb
When do I use modifier F5?
Append to procedure codes performed on the right hand, thumb.
What's a common mistake with modifier F5?
Using F5 for a left thumb procedure — F5 is right-hand only; the left thumb uses FA.
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.