ICD-10-CM 2027 diagnosis code
S90Superficial injury of ankle, foot and toes
S90 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.
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 S90
S90 is the ICD-10-CM diagnosis code for superficial injury of ankle, foot and toes. It belongs to 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 8 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: S90.0 (ankle), S90.1 (nail), S90.2 (nail), S90.3 (foot), S90.4 (toe), S90.5 (ankle), S90.8 (foot) and S90.9 (toe).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under S90
- S90.0Contusion of ankle
- S90.1Contusion of toe without damage to nail
- S90.2Contusion of toe with damage to nail
- S90.3Contusion of foot
- S90.4Other superficial injuries of toe
- S90.41Abrasion of toe
- S90.42Blister (nonthermal) of toe
- S90.44External constriction of toe
- S90.45Superficial foreign body of toe
- S90.451Superficial foreign body, right great toe
- S90.452Superficial foreign body, left great toe
- S90.453Superficial foreign body, unspecified great toe
- S90.454Superficial foreign body, right lesser toe(s)
- S90.455Superficial foreign body, left lesser toe(s)
- S90.456Superficial foreign body, unspecified lesser toe(s)
- S90.46Insect bite (nonvenomous) of toe
- S90.461Insect bite (nonvenomous), right great toe
- S90.462Insect bite (nonvenomous), left great toe
- S90.463Insect bite (nonvenomous), unspecified great toe
- S90.464Insect bite (nonvenomous), right lesser toe(s)
- S90.465Insect bite (nonvenomous), left lesser toe(s)
- S90.466Insect bite (nonvenomous), unspecified lesser toe(s)
- S90.47Other superficial bite of toe
- S90.471Other superficial bite of right great toe
- S90.472Other superficial bite of left great toe
- S90.473Other superficial bite of unspecified great toe
- S90.474Other superficial bite of right lesser toe(s)
- S90.475Other superficial bite of left lesser toe(s)
- S90.476Other superficial bite of unspecified lesser toe(s)
- S90.5Other superficial injuries of ankle
- S90.8Other superficial injuries of foot
- S90.9Unspecified superficial injury of ankle, foot and toe
- S90.91Unspecified superficial injury of ankle
- S90.92Unspecified superficial injury of foot
- S90.93Unspecified superficial injury of toes
- S90.931Unspecified superficial injury of right great toe
- S90.932Unspecified superficial injury of left great toe
- S90.933Unspecified superficial injury of unspecified great toe
- S90.934Unspecified superficial injury of right lesser toe(s)
- S90.935Unspecified superficial injury of left lesser toe(s)
- S90.936Unspecified superficial injury of unspecified lesser toe(s)
Notes that apply from higher levels
Instructions written at a parent level also apply to S90.
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.
Codes whose notes reference S90
- S80Excludes2
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 S90
Is S90 billable?
- No. S90 is a header code. Report one of its more specific subcodes instead.