ICD-10-CM
ICD-10 code for Wound, open toe (s): S91.109
The ICD-10-CM index points "Wound, open toe (s)" to S91.109, Unspecified open wound of unspecified toe(s) without damage to nail. S91.109 is not billable on its own. Add the 7th character for the encounter, for example S91.109A, Unspecified open wound of unspecified toe(s) without damage to nail, initial encounter.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
Run it in Rivvi
Check every code on your export
Upload a claims or problem-list export. Rivvi flags codes that are not billable, replaced, or unspecified when a specific code exists.
Check my exportFree to start. Opens Rivvi, the AI workspace for healthcare teams.
Index subterms
A header groups codes and is not billed. A billable code is one you can report.