S55Header code — not billable
Injury of blood vessels at forearm level
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S55
- Effective date
- October 1, 2026
Related codes in category S55
S55.0Injury of ulnar artery at forearm levelS55.00Unspecified injury of ulnar artery at forearm levelS55.001Unsp injury of ulnar artery at forearm level, right armS55.001AUnsp injury of ulnar artery at forarm lv, right arm, initYesS55.001DUnsp injury of ulnar artery at forarm lv, right arm, subsYesS55.001SUnsp injury of ulnar artery at forarm lv, right arm, sequelaYesS55.002Unsp injury of ulnar artery at forearm level, left armS55.002AUnsp injury of ulnar artery at forearm level, left arm, initYesS55.002DUnsp injury of ulnar artery at forearm level, left arm, subsYesS55.002SUnsp injury of ulnar artery at forarm lv, left arm, sequelaYesS55.009Unsp injury of ulnar artery at forearm level, unsp armS55.009AUnsp injury of ulnar artery at forearm level, unsp arm, initYes
Frequently asked questions
What is ICD-10 code S55?
S55 is an ICD-10-CM diagnosis code for Injury of blood vessels at forearm level.
Is S55 a billable code?
No. S55 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is S55 in?
S55 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S55 become effective?
S55 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S55?
S55 belongs to category S55, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.