ICD-10-CM 2027 diagnosis code
S40.021Contusion of right upper arm
S40.021 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 S40.021
S40.021 is the ICD-10-CM diagnosis code for contusion of right upper arm. It belongs to category S40 (superficial injury of shoulder and upper arm), block S40-S49 (injuries to the shoulder and upper arm) 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 S40.02 (contusion of upper arm), S40.021 is specifically for contusion of right upper arm. Related codes cover left upper arm (S40.022) and unspecified upper arm (S40.029).
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 S40
Notes that apply from higher levels
Instructions written at a parent level also apply to S40.021.
Broader instructions also apply from S40-S49 Injuries to the shoulder and upper arm 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 S40.021
Is S40.021 billable?
- No. S40.021 is a header code. Report one of its more specific subcodes instead.