S55.999ABillable
Other specified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter
Short description: Inj unsp blood vessel at forearm level, unsp arm, init
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S55
- Effective date
- October 1, 2026
Related codes in category S55
S55Injury of blood vessels at forearm levelS55.0Injury 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 arm
Frequently asked questions
What is ICD-10 code S55.999A?
S55.999A is an ICD-10-CM diagnosis code for Other specified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter.
Is S55.999A a billable code?
Yes. S55.999A is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is S55.999A in?
S55.999A falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S55.999A become effective?
S55.999A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S55.999A?
S55.999A 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.