ICD-10-CM 2027 diagnosis code
S91.1Open wound of toe without damage to nail
S91.1 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it and add the required 7th character.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About S91.1
S91.1 is the ICD-10-CM diagnosis code for open wound of toe without damage to nail. It belongs to category S91 (open wound of ankle, foot and toes), block S90-S99 (injuries to the ankle and foot) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.
Within S91, choose S91.1 (toe without damage to nail) only when documentation doesn't support a more specific option: ankle (S91.0), toe with damage to nail (S91.2) and foot (S91.3).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category S91
- S91.10Unspecified open wound of toe without damage to nail
- S91.101Unspecified open wound of right great toe without damage to nail
- S91.102Unspecified open wound of left great toe without damage to nail
- S91.103Unspecified open wound of unspecified great toe without damage to nail
- S91.104Unspecified open wound of right lesser toe(s) without damage to nail
- S91.105Unspecified open wound of left lesser toe(s) without damage to nail
- S91.106Unspecified open wound of unspecified lesser toe(s) without damage to nail
- S91.109Unspecified open wound of unspecified toe(s) without damage to nail
- S91.11Laceration without foreign body of toe without damage to nail
- S91.111Laceration without foreign body of right great toe without damage to nail
- S91.112Laceration without foreign body of left great toe without damage to nail
- S91.113Laceration without foreign body of unspecified great toe without damage to nail
- S91.114Laceration without foreign body of right lesser toe(s) without damage to nail
- S91.115Laceration without foreign body of left lesser toe(s) without damage to nail
- S91.116Laceration without foreign body of unspecified lesser toe(s) without damage to nail
- S91.119Laceration without foreign body of unspecified toe without damage to nail
- S91.12Laceration with foreign body of toe without damage to nail
- S91.121Laceration with foreign body of right great toe without damage to nail
- S91.122Laceration with foreign body of left great toe without damage to nail
- S91.123Laceration with foreign body of unspecified great toe without damage to nail
- S91.124Laceration with foreign body of right lesser toe(s) without damage to nail
- S91.125Laceration with foreign body of left lesser toe(s) without damage to nail
- S91.126Laceration with foreign body of unspecified lesser toe(s) without damage to nail
- S91.129Laceration with foreign body of unspecified toe(s) without damage to nail
- S91.13Puncture wound without foreign body of toe without damage to nail
- S91.131Puncture wound without foreign body of right great toe without damage to nail
- S91.132Puncture wound without foreign body of left great toe without damage to nail
- S91.133Puncture wound without foreign body of unspecified great toe without damage to nail
- S91.134Puncture wound without foreign body of right lesser toe(s) without damage to nail
- S91.135Puncture wound without foreign body of left lesser toe(s) without damage to nail
- S91.136Puncture wound without foreign body of unspecified lesser toe(s) without damage to nail
- S91.139Puncture wound without foreign body of unspecified toe(s) without damage to nail
- S91.14Puncture wound with foreign body of toe without damage to nail
- S91.141Puncture wound with foreign body of right great toe without damage to nail
- S91.142Puncture wound with foreign body of left great toe without damage to nail
- S91.143Puncture wound with foreign body of unspecified great toe without damage to nail
- S91.144Puncture wound with foreign body of right lesser toe(s) without damage to nail
- S91.145Puncture wound with foreign body of left lesser toe(s) without damage to nail
- S91.146Puncture wound with foreign body of unspecified lesser toe(s) without damage to nail
- S91.149Puncture wound with foreign body of unspecified toe(s) without damage to nail
- S91.15Open bite of toe without damage to nail
- S91.151Open bite of right great toe without damage to nail
- S91.152Open bite of left great toe without damage to nail
- S91.153Open bite of unspecified great toe without damage to nail
- S91.154Open bite of right lesser toe(s) without damage to nail
- S91.155Open bite of left lesser toe(s) without damage to nail
- S91.156Open bite of unspecified lesser toe(s) without damage to nail
- S91.159Open bite of unspecified toe(s) without damage to nail
- Ainitial encounter
- Dsubsequent encounter
- Ssequela
Notes that apply from higher levels
Instructions written at a parent level also apply to S91.1.
Broader instructions also apply from S90-S99 Injuries to the ankle and foot and Chapter 19: Injury, poisoning and certain other consequences of external causes.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about S91.1
Is S91.1 billable?
- No. S91.1 is a header code. Report one of its more specific subcodes instead.