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ICD-10-CM 2027 diagnosis code

S89.91Unspecified injury of right lower leg

Not billable — use a more specific codeRequires 7th character

S89.91 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 S89.91

S89.91 is the ICD-10-CM diagnosis code for unspecified injury of right lower leg. It belongs to category S89 (other and unspecified injuries of lower leg), block S80-S89 (injuries to the knee and lower leg) 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 S89.9 (unspecified injury of lower leg), S89.91 is specifically for unspecified injury of right lower leg. Related codes cover unspecified lower leg (S89.90) and left lower leg (S89.92).

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 in subcategory S89.9

Notes that apply from higher levels

Instructions written at a parent level also apply to S89.91.

› From S89 Other and unspecified injuries of lower leg
Note
  • A fracture not indicated as open or closed should be coded to closed
Excludes2
  • other and unspecified injuries of ankle and foot (S99.-)

Broader instructions also apply from S80-S89 Injuries to the knee and lower leg and Chapter 19: Injury, poisoning and certain other consequences of external causes.

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 S89.91

Is S89.91 billable?

No. S89.91 is a header code. Report one of its more specific subcodes instead.