ICD-10-CM 2027 diagnosis code

S40Superficial injury of shoulder and upper arm

Not billable — use a more specific code

S40 is a header code, so it can't be reported by itself. Choose one of the 4 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 S40

S40 is the ICD-10-CM diagnosis code for superficial injury of shoulder and upper arm. It belongs to 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 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: S40.0 (arm), S40.2 (shoulder), S40.8 (arm) and S40.9 (arm).

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 S40

Notes that apply from higher levels

Instructions written at a parent level also apply to S40.

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
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2021
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2023
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2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about S40

Is S40 billable?: No. S40 is a header code. Report one of its more specific subcodes instead.