S55Not billable, use a more specific code below
Injury of blood vessels at forearm level
In Injuries to the elbow and forearm (S50-S59), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes
135 billable codes under S55: 45 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Instructional notes
Excludes2: not included here, code separately if applicable
- injury of blood vessels at wrist and hand level (S65.-)
- injury of brachial vessels (S45.1-S45.2)
Code also: add a code for this too, order depends on the encounter
- any associated open wound (S51.-)
Also applies, from Injuries to the elbow and forearm (S50-S59)
These notes sit on S50-S59 and apply to every code under it, including S55.
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers 7th character use and coding of injuries, fractures, burns, drug and toxic effects, abuse and neglect, and complications of care (S00-T88).
- Application of 7th Characters in Chapter 19 (page 77)
- Coding of Injuries (page 78)
- Coding of Traumatic Fractures (page 79)
- Coding of Burns and Corrosions (page 80)
- Adverse Effects, Poisoning, Underdosing and Toxic Effects (page 82)
- Adult and child abuse, neglect and other maltreatment (page 85)
- Complications of care (page 85)
All codes under S55
S55 can't be used on a claim. Pick a billable code below; grey headings group them.
- S55.0Injury of ulnar artery at forearm level
- S55.00Unspecified injury of ulnar artery at forearm level
- S55.001Unspecified injury of ulnar artery at forearm level, right arm
- S55.001AUnspecified injury of ulnar artery at forearm level, right arm, initial encounter
- S55.001DUnspecified injury of ulnar artery at forearm level, right arm, subsequent encounter
- S55.001SUnspecified injury of ulnar artery at forearm level, right arm, sequela
- S55.002Unspecified injury of ulnar artery at forearm level, left arm
- S55.002AUnspecified injury of ulnar artery at forearm level, left arm, initial encounter
- S55.002DUnspecified injury of ulnar artery at forearm level, left arm, subsequent encounter
- S55.002SUnspecified injury of ulnar artery at forearm level, left arm, sequela
- S55.009Unspecified injury of ulnar artery at forearm level, unspecified arm
- S55.009AUnspecified injury of ulnar artery at forearm level, unspecified arm, initial encounter
- S55.009DUnspecified injury of ulnar artery at forearm level, unspecified arm, subsequent encounter
- S55.009SUnspecified injury of ulnar artery at forearm level, unspecified arm, sequela
- S55.01Laceration of ulnar artery at forearm level
- S55.011Laceration of ulnar artery at forearm level, right arm
- S55.011ALaceration of ulnar artery at forearm level, right arm, initial encounter
- S55.011DLaceration of ulnar artery at forearm level, right arm, subsequent encounter
- S55.011SLaceration of ulnar artery at forearm level, right arm, sequela
- S55.012Laceration of ulnar artery at forearm level, left arm
- S55.012ALaceration of ulnar artery at forearm level, left arm, initial encounter
- S55.012DLaceration of ulnar artery at forearm level, left arm, subsequent encounter
- S55.012SLaceration of ulnar artery at forearm level, left arm, sequela
- S55.019Laceration of ulnar artery at forearm level, unspecified arm
- S55.019ALaceration of ulnar artery at forearm level, unspecified arm, initial encounter
- S55.019DLaceration of ulnar artery at forearm level, unspecified arm, subsequent encounter
- S55.019SLaceration of ulnar artery at forearm level, unspecified arm, sequela
- S55.09Other specified injury of ulnar artery at forearm level
- S55.091Other specified injury of ulnar artery at forearm level, right arm
- S55.091AOther specified injury of ulnar artery at forearm level, right arm, initial encounter
- S55.091DOther specified injury of ulnar artery at forearm level, right arm, subsequent encounter
- S55.091SOther specified injury of ulnar artery at forearm level, right arm, sequela
- S55.092Other specified injury of ulnar artery at forearm level, left arm
- S55.092AOther specified injury of ulnar artery at forearm level, left arm, initial encounter
- S55.092DOther specified injury of ulnar artery at forearm level, left arm, subsequent encounter
- S55.092SOther specified injury of ulnar artery at forearm level, left arm, sequela
- S55.099Other specified injury of ulnar artery at forearm level, unspecified arm
- S55.099AOther specified injury of ulnar artery at forearm level, unspecified arm, initial encounter
- S55.099DOther specified injury of ulnar artery at forearm level, unspecified arm, subsequent encounter
- S55.099SOther specified injury of ulnar artery at forearm level, unspecified arm, sequela
- S55.1Injury of radial artery at forearm level
- S55.10Unspecified injury of radial artery at forearm level
- S55.101Unspecified injury of radial artery at forearm level, right arm
- S55.101AUnspecified injury of radial artery at forearm level, right arm, initial encounter
- S55.101DUnspecified injury of radial artery at forearm level, right arm, subsequent encounter
- S55.101SUnspecified injury of radial artery at forearm level, right arm, sequela
- S55.102Unspecified injury of radial artery at forearm level, left arm
- S55.102AUnspecified injury of radial artery at forearm level, left arm, initial encounter
- S55.102DUnspecified injury of radial artery at forearm level, left arm, subsequent encounter
- S55.102SUnspecified injury of radial artery at forearm level, left arm, sequela
- S55.109Unspecified injury of radial artery at forearm level, unspecified arm
- S55.109AUnspecified injury of radial artery at forearm level, unspecified arm, initial encounter
- S55.109DUnspecified injury of radial artery at forearm level, unspecified arm, subsequent encounter
- S55.109SUnspecified injury of radial artery at forearm level, unspecified arm, sequela
- S55.11Laceration of radial artery at forearm level
- S55.111Laceration of radial artery at forearm level, right arm
- S55.111ALaceration of radial artery at forearm level, right arm, initial encounter
- S55.111DLaceration of radial artery at forearm level, right arm, subsequent encounter
- S55.111SLaceration of radial artery at forearm level, right arm, sequela
- S55.112Laceration of radial artery at forearm level, left arm
- S55.112ALaceration of radial artery at forearm level, left arm, initial encounter
- S55.112DLaceration of radial artery at forearm level, left arm, subsequent encounter
- S55.112SLaceration of radial artery at forearm level, left arm, sequela
- S55.119Laceration of radial artery at forearm level, unspecified arm
- S55.119ALaceration of radial artery at forearm level, unspecified arm, initial encounter
- S55.119DLaceration of radial artery at forearm level, unspecified arm, subsequent encounter
- S55.119SLaceration of radial artery at forearm level, unspecified arm, sequela
- S55.19Other specified injury of radial artery at forearm level
- S55.191Other specified injury of radial artery at forearm level, right arm
- S55.191AOther specified injury of radial artery at forearm level, right arm, initial encounter
- S55.191DOther specified injury of radial artery at forearm level, right arm, subsequent encounter
- S55.191SOther specified injury of radial artery at forearm level, right arm, sequela
- S55.192Other specified injury of radial artery at forearm level, left arm
- S55.192AOther specified injury of radial artery at forearm level, left arm, initial encounter
- S55.192DOther specified injury of radial artery at forearm level, left arm, subsequent encounter
- S55.192SOther specified injury of radial artery at forearm level, left arm, sequela
- S55.199Other specified injury of radial artery at forearm level, unspecified arm
- S55.199AOther specified injury of radial artery at forearm level, unspecified arm, initial encounter
- S55.199DOther specified injury of radial artery at forearm level, unspecified arm, subsequent encounter
- S55.199SOther specified injury of radial artery at forearm level, unspecified arm, sequela
- S55.2Injury of vein at forearm level
- S55.20Unspecified injury of vein at forearm level
- S55.201Unspecified injury of vein at forearm level, right arm
- S55.201AUnspecified injury of vein at forearm level, right arm, initial encounter
- S55.201DUnspecified injury of vein at forearm level, right arm, subsequent encounter
- S55.201SUnspecified injury of vein at forearm level, right arm, sequela
- S55.202Unspecified injury of vein at forearm level, left arm
- S55.202AUnspecified injury of vein at forearm level, left arm, initial encounter
- S55.202DUnspecified injury of vein at forearm level, left arm, subsequent encounter
- S55.202SUnspecified injury of vein at forearm level, left arm, sequela
- S55.209Unspecified injury of vein at forearm level, unspecified arm
- S55.209AUnspecified injury of vein at forearm level, unspecified arm, initial encounter
- S55.209DUnspecified injury of vein at forearm level, unspecified arm, subsequent encounter
- S55.209SUnspecified injury of vein at forearm level, unspecified arm, sequela
- S55.21Laceration of vein at forearm level
- S55.211Laceration of vein at forearm level, right arm
- S55.211ALaceration of vein at forearm level, right arm, initial encounter
- S55.211DLaceration of vein at forearm level, right arm, subsequent encounter
- S55.211SLaceration of vein at forearm level, right arm, sequela
- S55.212Laceration of vein at forearm level, left arm
- S55.212ALaceration of vein at forearm level, left arm, initial encounter
- S55.212DLaceration of vein at forearm level, left arm, subsequent encounter
- S55.212SLaceration of vein at forearm level, left arm, sequela
- S55.219Laceration of vein at forearm level, unspecified arm
- S55.219ALaceration of vein at forearm level, unspecified arm, initial encounter
- S55.219DLaceration of vein at forearm level, unspecified arm, subsequent encounter
- S55.219SLaceration of vein at forearm level, unspecified arm, sequela
- S55.29Other specified injury of vein at forearm level
- S55.291Other specified injury of vein at forearm level, right arm
- S55.291AOther specified injury of vein at forearm level, right arm, initial encounter
- S55.291DOther specified injury of vein at forearm level, right arm, subsequent encounter
- S55.291SOther specified injury of vein at forearm level, right arm, sequela
- S55.292Other specified injury of vein at forearm level, left arm
- S55.292AOther specified injury of vein at forearm level, left arm, initial encounter
- S55.292DOther specified injury of vein at forearm level, left arm, subsequent encounter
- S55.292SOther specified injury of vein at forearm level, left arm, sequela
- S55.299Other specified injury of vein at forearm level, unspecified arm
- S55.299AOther specified injury of vein at forearm level, unspecified arm, initial encounter
- S55.299DOther specified injury of vein at forearm level, unspecified arm, subsequent encounter
- S55.299SOther specified injury of vein at forearm level, unspecified arm, sequela
- S55.8Injury of other blood vessels at forearm level
- S55.80Unspecified injury of other blood vessels at forearm level
- S55.801Unspecified injury of other blood vessels at forearm level, right arm
- S55.801AUnspecified injury of other blood vessels at forearm level, right arm, initial encounter
- S55.801DUnspecified injury of other blood vessels at forearm level, right arm, subsequent encounter
- S55.801SUnspecified injury of other blood vessels at forearm level, right arm, sequela
- S55.802Unspecified injury of other blood vessels at forearm level, left arm
- S55.802AUnspecified injury of other blood vessels at forearm level, left arm, initial encounter
- S55.802DUnspecified injury of other blood vessels at forearm level, left arm, subsequent encounter
- S55.802SUnspecified injury of other blood vessels at forearm level, left arm, sequela
- S55.809Unspecified injury of other blood vessels at forearm level, unspecified arm
- S55.809AUnspecified injury of other blood vessels at forearm level, unspecified arm, initial encounter
- S55.809DUnspecified injury of other blood vessels at forearm level, unspecified arm, subsequent encounter
- S55.809SUnspecified injury of other blood vessels at forearm level, unspecified arm, sequela
- S55.81Laceration of other blood vessels at forearm level
- S55.811Laceration of other blood vessels at forearm level, right arm
- S55.811ALaceration of other blood vessels at forearm level, right arm, initial encounter
- S55.811DLaceration of other blood vessels at forearm level, right arm, subsequent encounter
- S55.811SLaceration of other blood vessels at forearm level, right arm, sequela
- S55.812Laceration of other blood vessels at forearm level, left arm
- S55.812ALaceration of other blood vessels at forearm level, left arm, initial encounter
- S55.812DLaceration of other blood vessels at forearm level, left arm, subsequent encounter
- S55.812SLaceration of other blood vessels at forearm level, left arm, sequela
- S55.819Laceration of other blood vessels at forearm level, unspecified arm
- S55.819ALaceration of other blood vessels at forearm level, unspecified arm, initial encounter
- S55.819DLaceration of other blood vessels at forearm level, unspecified arm, subsequent encounter
- S55.819SLaceration of other blood vessels at forearm level, unspecified arm, sequela
- S55.89Other specified injury of other blood vessels at forearm level
- S55.891Other specified injury of other blood vessels at forearm level, right arm
- S55.891AOther specified injury of other blood vessels at forearm level, right arm, initial encounter
- S55.891DOther specified injury of other blood vessels at forearm level, right arm, subsequent encounter
- S55.891SOther specified injury of other blood vessels at forearm level, right arm, sequela
- S55.892Other specified injury of other blood vessels at forearm level, left arm
- S55.892AOther specified injury of other blood vessels at forearm level, left arm, initial encounter
- S55.892DOther specified injury of other blood vessels at forearm level, left arm, subsequent encounter
- S55.892SOther specified injury of other blood vessels at forearm level, left arm, sequela
- S55.899Other specified injury of other blood vessels at forearm level, unspecified arm
- S55.899AOther specified injury of other blood vessels at forearm level, unspecified arm, initial encounter
- S55.899DOther specified injury of other blood vessels at forearm level, unspecified arm, subsequent encounter
- S55.899SOther specified injury of other blood vessels at forearm level, unspecified arm, sequela
- S55.9Injury of unspecified blood vessel at forearm level
- S55.90Unspecified injury of unspecified blood vessel at forearm level
- S55.901Unspecified injury of unspecified blood vessel at forearm level, right arm
- S55.901AUnspecified injury of unspecified blood vessel at forearm level, right arm, initial encounter
- S55.901DUnspecified injury of unspecified blood vessel at forearm level, right arm, subsequent encounter
- S55.901SUnspecified injury of unspecified blood vessel at forearm level, right arm, sequela
- S55.902Unspecified injury of unspecified blood vessel at forearm level, left arm
- S55.902AUnspecified injury of unspecified blood vessel at forearm level, left arm, initial encounter
- S55.902DUnspecified injury of unspecified blood vessel at forearm level, left arm, subsequent encounter
- S55.902SUnspecified injury of unspecified blood vessel at forearm level, left arm, sequela
- S55.909Unspecified injury of unspecified blood vessel at forearm level, unspecified arm
- S55.909AUnspecified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter
- S55.909DUnspecified injury of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
- S55.909SUnspecified injury of unspecified blood vessel at forearm level, unspecified arm, sequela
- S55.91Laceration of unspecified blood vessel at forearm level
- S55.911Laceration of unspecified blood vessel at forearm level, right arm
- S55.911ALaceration of unspecified blood vessel at forearm level, right arm, initial encounter
- S55.911DLaceration of unspecified blood vessel at forearm level, right arm, subsequent encounter
- S55.911SLaceration of unspecified blood vessel at forearm level, right arm, sequela
- S55.912Laceration of unspecified blood vessel at forearm level, left arm
- S55.912ALaceration of unspecified blood vessel at forearm level, left arm, initial encounter
- S55.912DLaceration of unspecified blood vessel at forearm level, left arm, subsequent encounter
- S55.912SLaceration of unspecified blood vessel at forearm level, left arm, sequela
- S55.919Laceration of unspecified blood vessel at forearm level, unspecified arm
- S55.919ALaceration of unspecified blood vessel at forearm level, unspecified arm, initial encounter
- S55.919DLaceration of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
- S55.919SLaceration of unspecified blood vessel at forearm level, unspecified arm, sequela
- S55.99Other specified injury of unspecified blood vessel at forearm level
- S55.991Other specified injury of unspecified blood vessel at forearm level, right arm
- S55.991AOther specified injury of unspecified blood vessel at forearm level, right arm, initial encounter
- S55.991DOther specified injury of unspecified blood vessel at forearm level, right arm, subsequent encounter
- S55.991SOther specified injury of unspecified blood vessel at forearm level, right arm, sequela
- S55.992Other specified injury of unspecified blood vessel at forearm level, left arm
- S55.992AOther specified injury of unspecified blood vessel at forearm level, left arm, initial encounter
- S55.992DOther specified injury of unspecified blood vessel at forearm level, left arm, subsequent encounter
- S55.992SOther specified injury of unspecified blood vessel at forearm level, left arm, sequela
- S55.999Other specified injury of unspecified blood vessel at forearm level, unspecified arm
- S55.999AOther specified injury of unspecified blood vessel at forearm level, unspecified arm, initial encounter
- S55.999DOther specified injury of unspecified blood vessel at forearm level, unspecified arm, subsequent encounter
- S55.999SOther specified injury of unspecified blood vessel at forearm level, unspecified arm, sequela
S55 MS-DRGs
As the principal diagnosis, the billable codes under S55 group to these 10 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 299 Peripheral Vascular Disorders with MCC (45 of 135 codes)
- DRG 300 Peripheral Vascular Disorders with CC (45 of 135 codes)
- DRG 301 Peripheral Vascular Disorders without CC/MCC (45 of 135 codes)
- DRG 913 Traumatic Injury with MCC (45 of 135 codes)
- DRG 914 Traumatic Injury without MCC (45 of 135 codes)
- DRG 949 Aftercare with CC/MCC (45 of 135 codes)
- DRG 950 Aftercare without CC/MCC (45 of 135 codes)
- DRG 963 Other Multiple Significant Trauma with MCC (45 of 135 codes)
- DRG 964 Other Multiple Significant Trauma with CC (45 of 135 codes)
- DRG 965 Other Multiple Significant Trauma without CC/MCC (45 of 135 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Arm Injuries and Disorders
Of the 206 bones in your body, three of them are in your arm: the humerus, radius, and ulna. Your arms are also made up of muscles, joints, tendons, and other connective tissue. Injuries to any of these parts of the arm can occur during sports, a fall, or an accident.
Read more about arm injuries and disorders on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.