S55.112A is the authoritative medical code for Laceration of radial artery at forearm level, left arm, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for laceration of radial artery at forearm level, left arm, initial encounter (ICD-10-CM S55.112A), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Laceration of radial artery at forearm level, left arm, initial encounter is a billable ICD-10-CM diagnosis code S55.112A. Excludes2 (not included here): 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: any associated open wound S51.-. 7th character: The appropriate 7th character is to be added to each code from category S55.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S55.112A 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
Does S55.112A require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S55.
Can S55.112A be reported alongside related conditions?
Per Excludes2 instructions, S55.112A and the following may both be reported 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).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as S55.112A, with their registry titles.
- S55 — Injury of blood vessels at forearm level
- 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
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code S52.112A
Torus fracture of upper end of left radius, initial encounter for closed fracture
ICD Code S56.112A
Strain of flexor muscle, fascia and tendon of left index finger at forearm level, initial encounter
ICD Code S58.112A
Complete traumatic amputation at level between elbow and wrist, left arm, initial encounter
ICD Code S59.112A
Salter-Harris Type I physeal fracture of upper end of radius, left arm, initial encounter for closed fracture