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ICD-10-CM 2027 diagnosis code

S90.0Contusion of ankle

Not billable — use a more specific codeRequires 7th character

S90.0 is a header code, so it can't be reported by itself. Choose one of the 3 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 S90.0

S90.0 is the ICD-10-CM diagnosis code for contusion of ankle. It belongs to category S90 (superficial injury 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 3 subcodes must be used instead.

Within S90 (superficial injury of ankle, foot and toes), S90.0 is specifically for contusion of ankle. Related codes cover contusion of toe without damage to nail (S90.1), contusion of toe with damage to nail (S90.2), contusion of foot (S90.3), other superficial injuries of toe (S90.4), other superficial injuries of ankle (S90.5), other superficial injuries of foot (S90.8) and unspecified superficial injury of ankle, foot and toe (S90.9).

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 S90

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Notes that apply from higher levels

Instructions written at a parent level also apply to S90.0.

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.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to S90.0.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about S90.0

Is S90.0 billable?

No. S90.0 is a header code. Report one of its more specific subcodes instead.