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ICD-10/S55

S55 ICD-10-CM Code: Injury of blood vessels at forearm level

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Injury of blood vessels at forearm level is a non-billable ICD-10-CM category code (S55). A more specific billable subcode must be selected for claims submission.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S55 in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • injury of blood vessels at wrist and hand level (S65.-)
  • injury of brachial vessels (S45.1-S45.2)
  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • injuries of wrist and hand (S60-S69)
  • insect bite or sting, venomous (T63.4)

Code Also

Additional codes that may be required to fully describe the encounter.

  • any associated open wound (S51.-)

Frequently Asked Questions (FAQ) & Clinical Guidance

Can S55 be billed directly?

No. S55 (Injury of blood vessels at forearm level) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Does S55 require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S55; A: initial encounter; D: subsequent encounter; S: sequela.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S55 in its code family, with their registry titles.

  • S55.0 — Injury of ulnar artery at forearm level
  • S55.00 — Unspecified injury of ulnar artery at forearm level
  • S55.001 — Unspecified injury of ulnar artery at forearm level, right arm
  • S55.001A — Unspecified injury of ulnar artery at forearm level, right arm, initial encounter
  • S55.001D — Unspecified injury of ulnar artery at forearm level, right arm, subsequent encounter
  • S55.001S — Unspecified injury of ulnar artery at forearm level, right arm, sequela
  • S55.002 — Unspecified injury of ulnar artery at forearm level, left arm
  • S55.002A — Unspecified injury of ulnar artery at forearm level, left arm, initial encounter
  • S55.002D — Unspecified injury of ulnar artery at forearm level, left arm, subsequent encounter
  • S55.002S — Unspecified injury of ulnar artery at forearm level, left arm, sequela
  • S55.009 — Unspecified injury of ulnar artery at forearm level, unspecified arm
  • S55.009A — Unspecified injury of ulnar artery at forearm level, unspecified arm, initial encounter
  • S55.009D — Unspecified injury of ulnar artery at forearm level, unspecified arm, subsequent encounter
  • S55.009S — Unspecified injury of ulnar artery at forearm level, unspecified arm, sequela
  • S55.01 — Laceration of ulnar artery at forearm level
  • S55.011 — Laceration of ulnar artery at forearm level, right arm
  • S55.011A — Laceration of ulnar artery at forearm level, right arm, initial encounter
  • S55.011D — Laceration of ulnar artery at forearm level, right arm, subsequent encounter
  • S55.011S — Laceration of ulnar artery at forearm level, right arm, sequela
  • S55.012 — Laceration of ulnar artery at forearm level, left arm
  • S55.012A — Laceration of ulnar artery at forearm level, left arm, initial encounter
  • S55.012D — Laceration of ulnar artery at forearm level, left arm, subsequent encounter
  • S55.012S — Laceration of ulnar artery at forearm level, left arm, sequela
  • S55.019 — Laceration of ulnar artery at forearm level, unspecified arm
  • S55.019A — Laceration of ulnar artery at forearm level, unspecified arm, initial encounter
  • S55.019D — Laceration of ulnar artery at forearm level, unspecified arm, subsequent encounter
  • S55.019S — Laceration of ulnar artery at forearm level, unspecified arm, sequela
  • S55.09 — Other specified injury of ulnar artery at forearm level
  • S55.091 — Other specified injury of ulnar artery at forearm level, right arm
  • S55.091A — Other specified injury of ulnar artery at forearm level, right arm, initial encounter
  • S55.091D — Other specified injury of ulnar artery at forearm level, right arm, subsequent encounter
  • S55.091S — Other specified injury of ulnar artery at forearm level, right arm, sequela
  • S55.092 — Other specified injury of ulnar artery at forearm level, left arm
  • S55.092A — Other specified injury of ulnar artery at forearm level, left arm, initial encounter
  • S55.092D — Other specified injury of ulnar artery at forearm level, left arm, subsequent encounter
  • S55.092S — Other specified injury of ulnar artery at forearm level, left arm, sequela
  • S55.099 — Other specified injury of ulnar artery at forearm level, unspecified arm
  • S55.099A — Other specified injury of ulnar artery at forearm level, unspecified arm, initial encounter
  • S55.099D — Other specified injury of ulnar artery at forearm level, unspecified arm, subsequent encounter
  • S55.099S — Other specified injury of ulnar artery at forearm level, unspecified arm, sequela
  • S55.1 — Injury of radial artery at forearm level
  • S55.10 — Unspecified injury of radial artery at forearm level
  • S55.101 — Unspecified injury of radial artery at forearm level, right arm
  • S55.101A — Unspecified injury of radial artery at forearm level, right arm, initial encounter
  • S55.101D — Unspecified injury of radial artery at forearm level, right arm, subsequent encounter
  • S55.101S — Unspecified injury of radial artery at forearm level, right arm, sequela
  • S55.102 — Unspecified injury of radial artery at forearm level, left arm
  • S55.102A — Unspecified injury of radial artery at forearm level, left arm, initial encounter
  • S55.102D — Unspecified injury of radial artery at forearm level, left arm, subsequent encounter
  • S55.102S — Unspecified injury of radial artery at forearm level, left arm, sequela
  • S55.109 — Unspecified injury of radial artery at forearm level, unspecified arm
  • S55.109A — Unspecified injury of radial artery at forearm level, unspecified arm, initial encounter
  • S55.109D — Unspecified injury of radial artery at forearm level, unspecified arm, subsequent encounter
  • S55.109S — Unspecified injury of radial artery at forearm level, unspecified arm, sequela
  • S55.11 — Laceration of radial artery at forearm level
  • S55.111 — Laceration of radial artery at forearm level, right arm
  • S55.111A — Laceration of radial artery at forearm level, right arm, initial encounter
  • S55.111D — Laceration of radial artery at forearm level, right arm, subsequent encounter
  • S55.111S — Laceration of radial artery at forearm level, right arm, sequela
  • S55.112 — Laceration of radial artery at forearm level, left arm
  • S55.112A — Laceration of radial artery at forearm level, left arm, initial encounter
  • S55.112D — Laceration of radial artery at forearm level, left arm, subsequent encounter
  • S55.112S — Laceration of radial artery at forearm level, left arm, sequela
  • S55.119 — Laceration of radial artery at forearm level, unspecified arm
  • S55.119A — Laceration of radial artery at forearm level, unspecified arm, initial encounter
  • S55.119D — Laceration of radial artery at forearm level, unspecified arm, subsequent encounter
  • S55.119S — Laceration of radial artery at forearm level, unspecified arm, sequela
  • S55.19 — Other specified injury of radial artery at forearm level
  • S55.191 — Other specified injury of radial artery at forearm level, right arm
  • S55.191A — Other specified injury of radial artery at forearm level, right arm, initial encounter
  • S55.191D — Other specified injury of radial artery at forearm level, right arm, subsequent encounter
  • S55.191S — Other specified injury of radial artery at forearm level, right arm, sequela
  • S55.192 — Other specified injury of radial artery at forearm level, left arm
  • S55.192A — Other specified injury of radial artery at forearm level, left arm, initial encounter
  • S55.192D — Other specified injury of radial artery at forearm level, left arm, subsequent encounter
  • S55.192S — Other specified injury of radial artery at forearm level, left arm, sequela
  • S55.199 — Other specified injury of radial artery at forearm level, unspecified arm
  • S55.199A — Other specified injury of radial artery at forearm level, unspecified arm, initial encounter
  • S55.199D — Other specified injury of radial artery at forearm level, unspecified arm, subsequent encounter
  • S55.199S — Other specified injury of radial artery at forearm level, unspecified arm, sequela
  • S55.2 — Injury of vein at forearm level
  • S55.20 — Unspecified injury of vein at forearm level
  • S55.201 — Unspecified injury of vein at forearm level, right arm
  • S55.201A — Unspecified injury of vein at forearm level, right arm, initial encounter
  • S55.201D — Unspecified injury of vein at forearm level, right arm, subsequent encounter
  • S55.201S — Unspecified injury of vein at forearm level, right arm, sequela
  • S55.202 — Unspecified injury of vein at forearm level, left arm
  • S55.202A — Unspecified injury of vein at forearm level, left arm, initial encounter
  • S55.202D — Unspecified injury of vein at forearm level, left arm, subsequent encounter
  • S55.202S — Unspecified injury of vein at forearm level, left arm, sequela
  • S55.209 — Unspecified injury of vein at forearm level, unspecified arm
  • S55.209A — Unspecified injury of vein at forearm level, unspecified arm, initial encounter
  • S55.209D — Unspecified injury of vein at forearm level, unspecified arm, subsequent encounter
  • S55.209S — Unspecified injury of vein at forearm level, unspecified arm, sequela
  • S55.21 — Laceration of vein at forearm level
  • S55.211 — Laceration of vein at forearm level, right arm
  • S55.211A — Laceration of vein at forearm level, right arm, initial encounter
  • S55.211D — Laceration of vein at forearm level, right arm, subsequent encounter
  • S55.211S — Laceration of vein at forearm level, right arm, sequela
  • S55.212 — Laceration of vein at forearm level, left arm
  • S55.212A — Laceration of vein at forearm level, left arm, initial encounter
  • S55.212D — Laceration of vein at forearm level, left arm, subsequent encounter
  • S55.212S — Laceration of vein at forearm level, left arm, sequela
  • S55.219 — Laceration of vein at forearm level, unspecified arm
  • S55.219A — Laceration of vein at forearm level, unspecified arm, initial encounter
  • S55.219D — Laceration of vein at forearm level, unspecified arm, subsequent encounter
  • S55.219S — Laceration of vein at forearm level, unspecified arm, sequela
  • S55.29 — Other specified injury of vein at forearm level
  • S55.291 — Other specified injury of vein at forearm level, right arm
  • S55.291A — Other specified injury of vein at forearm level, right arm, initial encounter
  • S55.291D — Other specified injury of vein at forearm level, right arm, subsequent encounter
  • S55.291S — Other specified injury of vein at forearm level, right arm, sequela
  • S55.292 — Other specified injury of vein at forearm level, left arm
  • S55.292A — Other specified injury of vein at forearm level, left arm, initial encounter
  • S55.292D — Other specified injury of vein at forearm level, left arm, subsequent encounter
  • S55.292S — Other specified injury of vein at forearm level, left arm, sequela
  • S55.299 — Other specified injury of vein at forearm level, unspecified arm
  • S55.299A — Other specified injury of vein at forearm level, unspecified arm, initial encounter
  • S55.299D — Other specified injury of vein at forearm level, unspecified arm, subsequent encounter
  • S55.299S — Other specified injury of vein at forearm level, unspecified arm, sequela
  • S55.8 — Injury of other blood vessels at forearm level
  • S55.80 — Unspecified injury of other blood vessels at forearm level
  • S55.801 — Unspecified injury of other blood vessels at forearm level, right arm
  • S55.801A — Unspecified injury of other blood vessels at forearm level, right arm, initial encounter
  • S55.801D — Unspecified injury of other blood vessels at forearm level, right arm, subsequent encounter
  • S55.801S — Unspecified injury of other blood vessels at forearm level, right arm, sequela
  • S55.802 — Unspecified injury of other blood vessels at forearm level, left arm
  • S55.802A — Unspecified injury of other blood vessels at forearm level, left arm, initial encounter
  • S55.802D — Unspecified injury of other blood vessels at forearm level, left arm, subsequent encounter
  • S55.802S — Unspecified injury of other blood vessels at forearm level, left arm, sequela
  • S55.809 — Unspecified injury of other blood vessels at forearm level, unspecified arm
  • S55.809A — Unspecified injury of other blood vessels at forearm level, unspecified arm, initial encounter
  • S55.809D — Unspecified injury of other blood vessels at forearm level, unspecified arm, subsequent encounter
  • S55.809S — Unspecified injury of other blood vessels at forearm level, unspecified arm, sequela
  • S55.81 — Laceration of other blood vessels at forearm level
  • S55.811 — Laceration of other blood vessels at forearm level, right arm
  • S55.811A — Laceration of other blood vessels at forearm level, right arm, initial encounter
  • S55.811D — Laceration of other blood vessels at forearm level, right arm, subsequent encounter
  • S55.811S — Laceration of other blood vessels at forearm level, right arm, sequela
  • S55.812 — Laceration of other blood vessels at forearm level, left arm
  • S55.812A — Laceration of other blood vessels at forearm level, left arm, initial encounter
  • S55.812D — Laceration of other blood vessels at forearm level, left arm, subsequent encounter
  • S55.812S — Laceration of other blood vessels at forearm level, left arm, sequela
  • S55.819 — Laceration of other blood vessels at forearm level, unspecified arm
  • S55.819A — Laceration of other blood vessels at forearm level, unspecified arm, initial encounter
  • S55.819D — Laceration of other blood vessels at forearm level, unspecified arm, subsequent encounter
  • S55.819S — Laceration of other blood vessels at forearm level, unspecified arm, sequela
  • S55.89 — Other specified injury of other blood vessels at forearm level
  • S55.891 — Other specified injury of other blood vessels at forearm level, right arm
  • S55.891A — Other specified injury of other blood vessels at forearm level, right arm, initial encounter
  • S55.891D — Other specified injury of other blood vessels at forearm level, right arm, subsequent encounter
  • S55.891S — Other specified injury of other blood vessels at forearm level, right arm, sequela
  • S55.892 — Other specified injury of other blood vessels at forearm level, left arm
  • S55.892A — Other specified injury of other blood vessels at forearm level, left arm, initial encounter
  • S55.892D — Other specified injury of other blood vessels at forearm level, left arm, subsequent encounter
  • S55.892S — Other specified injury of other blood vessels at forearm level, left arm, sequela
  • S55.899 — Other specified injury of other blood vessels at forearm level, unspecified arm
  • S55.899A — Other specified injury of other blood vessels at forearm level, unspecified arm, initial encounter
  • S55.899D — Other specified injury of other blood vessels at forearm level, unspecified arm, subsequent encounter
  • S55.899S — Other specified injury of other blood vessels at forearm level, unspecified arm, sequela
  • S55.9 — Injury of unspecified blood vessel at forearm level
  • S55.90 — Unspecified injury of unspecified blood vessel at forearm level
  • S55.901 — Unspecified injury of unspecified blood vessel at forearm level, right arm
  • S55.901A — Unspecified injury of unspecified blood vessel at forearm level, right arm, initial encounter
  • S55.901D — Unspecified injury of unspecified blood vessel at forearm level, right arm, subsequent encounter
  • S55.901S — Unspecified injury of unspecified blood vessel at forearm level, right arm, sequela
  • S55.902 — Unspecified injury of unspecified blood vessel at forearm level, left arm
  • S55.902A — Unspecified injury of unspecified blood vessel at forearm level, left arm, initial encounter
  • S55.902D — Unspecified injury of unspecified blood vessel at forearm level, left arm, subsequent encounter
  • S55.902S — Unspecified injury of unspecified blood vessel at forearm level, left arm, sequela
  • S55.909 — Unspecified injury of unspecified blood vessel at forearm level, unspecified arm
  • S55.909A — Unspecified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter
  • S55.909D — Unspecified injury of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
  • S55.909S — Unspecified injury of unspecified blood vessel at forearm level, unspecified arm, sequela
  • S55.91 — Laceration of unspecified blood vessel at forearm level
  • S55.911 — Laceration of unspecified blood vessel at forearm level, right arm
  • S55.911A — Laceration of unspecified blood vessel at forearm level, right arm, initial encounter
  • S55.911D — Laceration of unspecified blood vessel at forearm level, right arm, subsequent encounter
  • S55.911S — Laceration of unspecified blood vessel at forearm level, right arm, sequela
  • S55.912 — Laceration of unspecified blood vessel at forearm level, left arm
  • S55.912A — Laceration of unspecified blood vessel at forearm level, left arm, initial encounter
  • S55.912D — Laceration of unspecified blood vessel at forearm level, left arm, subsequent encounter
  • S55.912S — Laceration of unspecified blood vessel at forearm level, left arm, sequela
  • S55.919 — Laceration of unspecified blood vessel at forearm level, unspecified arm
  • S55.919A — Laceration of unspecified blood vessel at forearm level, unspecified arm, initial encounter
  • S55.919D — Laceration of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
  • S55.919S — Laceration of unspecified blood vessel at forearm level, unspecified arm, sequela
  • S55.99 — Other specified injury of unspecified blood vessel at forearm level
  • S55.991 — Other specified injury of unspecified blood vessel at forearm level, right arm
  • S55.991A — Other specified injury of unspecified blood vessel at forearm level, right arm, initial encounter
  • S55.991D — Other specified injury of unspecified blood vessel at forearm level, right arm, subsequent encounter
  • S55.991S — Other specified injury of unspecified blood vessel at forearm level, right arm, sequela
  • S55.992 — Other specified injury of unspecified blood vessel at forearm level, left arm
  • S55.992A — Other specified injury of unspecified blood vessel at forearm level, left arm, initial encounter
  • S55.992D — Other specified injury of unspecified blood vessel at forearm level, left arm, subsequent encounter
  • S55.992S — Other specified injury of unspecified blood vessel at forearm level, left arm, sequela
  • S55.999 — Other specified injury of unspecified blood vessel at forearm level, unspecified arm
  • S55.999A — Other specified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter
  • S55.999D — Other specified injury of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
  • S55.999S — Other specified injury of unspecified blood vessel at forearm level, unspecified arm, sequela