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v1.0.0
ICD-10 Guide
ICD-10 CodesV42.4

V42.4

Billable

Person boarding or alighting a car injured in collision with two- or three-wheeled motor vehicle

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 V42.4 is a billable code used to indicate a diagnosis of person boarding or alighting a car injured in collision with two- or three-wheeled motor vehicle.

Key Diagnostic Point:

This code is used to classify injuries sustained by individuals who are boarding or alighting from a car and are subsequently involved in a collision with a two- or three-wheeled motor vehicle, such as a motorcycle or scooter. The injuries can range from minor abrasions to severe trauma, depending on the speed of the vehicles involved and the circumstances of the incident. This code is particularly relevant in urban settings where traffic congestion and mixed vehicle types increase the likelihood of such accidents. Accurate coding is essential for understanding the epidemiology of traffic-related injuries and for implementing public health interventions aimed at reducing these incidents. Documentation should include details about the circumstances of the injury, the type of vehicles involved, and the location of the incident to ensure proper coding and analysis.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Determining the exact circumstances of the injury (boarding vs. alighting)
  • Identifying the type of two- or three-wheeled vehicle involved
  • Documenting the location and environment of the incident
  • Differentiating between similar external cause codes

Audit Risk Factors

  • Inadequate documentation of the incident details
  • Misclassification of the type of vehicle involved
  • Failure to capture the boarding or alighting action
  • Linkage errors with primary diagnosis codes

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Emergency department notes should clearly document the mechanism of injury, including the actions of the patient (boarding or alighting) and the type of vehicle involved.

Common Clinical Scenarios

Patients presenting with trauma after being struck while getting in or out of a vehicle, often requiring immediate assessment and intervention.

Billing Considerations

Consideration of potential head injuries or fractures, and the need for imaging studies to assess the extent of injuries.

Trauma Surgery

Documentation Requirements

Detailed operative notes and trauma assessments should include the mechanism of injury and any surgical interventions performed.

Common Clinical Scenarios

Patients with significant trauma from collisions, requiring surgical intervention or intensive care.

Billing Considerations

Documentation should reflect the severity of injuries and any complications arising from the incident.

Coding Guidelines

Inclusion Criteria

Use V42.4 When
  • According to the ICD
  • CM coding guidelines, external cause codes should be used in conjunction with the primary diagnosis code to provide a complete picture of the patient's condition
  • It is essential to capture the external cause of injury as accurately as possible, including the context of the incident

Exclusion Criteria

Do NOT use V42.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99283CPT Code

Emergency department visit, moderate severity

Clinical Scenario

Used when a patient presents to the emergency department with injuries from a collision.

Documentation Requirements

Documentation must include the patient's presenting symptoms, history of the incident, and examination findings.

Specialty Considerations

Emergency medicine providers should ensure that the mechanism of injury is clearly documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of external causes of injuries, improving data accuracy and facilitating better public health tracking and intervention strategies.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of external causes of injuries, improving data accuracy and facilitating better public health tracking and intervention strategies.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of external causes of injuries, improving data accuracy and facilitating better public health tracking and intervention strategies.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What should I document to support the use of code V42.4?

You should document the specific circumstances of the injury, including whether the patient was boarding or alighting from a vehicle, the type of two- or three-wheeled vehicle involved, and the location of the incident. Detailed descriptions of the injuries sustained and any treatments provided are also essential.