2026 ICD-10-CM Diagnosis Code S15.112AMinor laceration of left vertebral artery, initial encounter
ICD-10-CM Codes›S00–T88›S10-S19›S15
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- 7th Character A — Initial Encounter
- Not Chronic
S15.112A is a billable ICD-10-CM diagnosis code for minor laceration of left vertebral artery, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 913 through 914, 963 through 965. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 30 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury to blood vessels, initial encounter.
Code Identity
Code Classification
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Injury of blood vessels at neck level (S15). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Wounds and Injuries
An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening.
Read the full article at MedlinePlus
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Convert S15.112A to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S15.112AOverview
What is the ICD-10 code for minor laceration of left vertebral artery, initial encounter?
The ICD-10-CM code for minor laceration of left vertebral artery, initial encounter is S15.112A (sometimes written as S15112A). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is S15.112A (Minor laceration of left vertebral artery) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report minor laceration of left vertebral artery, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in S15.112A mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for minor laceration of left vertebral artery, such as an emergency visit or first evaluation.
What MS-DRG does S15.112A group to?
When minor laceration of left vertebral artery, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 913, 914, 963, 964, 965, with relative weights from 0.8855 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S15.112A a CC or MCC?
CMS lists S15.112A as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 30 closely related codes in its exclusion list.
