ICD-10-CM 2027 diagnosis code

S55.299Other specified injury of vein at forearm level, unspecified arm

Not billable — use a more specific codeRequires 7th character

S55.299 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.Short description: Oth injury of vein at forearm level, unspecified arm

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 S55.299

S55.299 is the ICD-10-CM diagnosis code for other specified injury of vein at forearm level, unspecified arm. It belongs to category S55 (injury of blood vessels 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 S55.29, choose S55.299 (unspecified arm) only when documentation doesn't support a more specific option: right arm (S55.291) and left arm (S55.292).

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 S55

Ainitial encounterS55.299A
Dsubsequent encounterS55.299D
SsequelaS55.299S

Notes that apply from higher levels

Instructions written at a parent level also apply to S55.299.

› From S55 Injury of blood vessels at forearm level

Excludes2

injury of blood vessels at wrist and hand level (S65.-)
injury of brachial vessels (S45.1-S45.2)

Code also

any associated open wound (S51.-)

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

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2027

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

Common questions about S55.299

Is S55.299 billable?: No. S55.299 is a header code. Report one of its more specific subcodes instead.