ICD-10-CM diagnosis code
S91.151D Open bite of right great toe without damage to nail, subsequent encounter
- Billable
- Yes, a complete code (FY2026)
- Category
- S91 Open wound of ankle and foot
Encounter (7th character)
This code is for a subsequent encounter: active treatment is complete and the patient is being seen during healing or recovery (for example a cast change, medication adjustment or follow-up visit).
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Other codes in S91
360 complete codes in this category.
- S91.146DPuncture wound with foreign body of unspecified lesser toe(s) without damage to nail, subsequent encounter
- S91.146SPuncture wound with foreign body of unspecified lesser toe(s) without damage to nail, sequela
- S91.149APuncture wound with foreign body of unspecified toe(s) without damage to nail, initial encounter
- S91.149DPuncture wound with foreign body of unspecified toe(s) without damage to nail, subsequent encounter
- S91.149SPuncture wound with foreign body of unspecified toe(s) without damage to nail, sequela
- S91.151AOpen bite of right great toe without damage to nail, initial encounter
- S91.151DOpen bite of right great toe without damage to nail, subsequent encounter
- S91.151SOpen bite of right great toe without damage to nail, sequela
- S91.152AOpen bite of left great toe without damage to nail, initial encounter
- S91.152DOpen bite of left great toe without damage to nail, subsequent encounter
- S91.152SOpen bite of left great toe without damage to nail, sequela
- S91.153AOpen bite of unspecified great toe without damage to nail, initial encounter
Documentation tips
- Make sure the note supports every element of the title, “Open bite of right great toe without damage to nail, subsequent encounter”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to S91.
The international WHO ICD-10 also has S91, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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