ICD-10-CM 2027 diagnosis code
S54.91Injury of unspecified nerve at forearm level, right arm
S54.91 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 S54.91
S54.91 is the ICD-10-CM diagnosis code for injury of unspecified nerve at forearm level, right arm. It belongs to category S54 (injury of nerves at forearm level), block S50-S59 (injuries to the elbow and forearm) 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 S54.9 (injury of unspecified nerve at forearm level), S54.91 is specifically for injury of unspecified nerve at forearm level, right arm. Related codes cover unspecified arm (S54.90) and left arm (S54.92).
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 from category S54
Notes that apply from higher levels
Instructions written at a parent level also apply to S54.91.
Broader instructions also apply from S50-S59 Injuries to the elbow and forearm 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 S54.91
Is S54.91 billable?
- No. S54.91 is a header code. Report one of its more specific subcodes instead.