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ICD-10 Guide
ICD-10 CodesV46.4

V46.4

Billable

Person boarding or alighting a car injured in collision with other nonmotor vehicle

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

Code Description

ICD-10 V46.4 is a billable code used to indicate a diagnosis of person boarding or alighting a car injured in collision with other nonmotor vehicle.

Key Diagnostic Point:

The ICD-10 code V46.4 is used to classify injuries sustained by individuals who are boarding or alighting from a motor vehicle and are subsequently involved in a collision with a nonmotor vehicle, such as a bicycle, pedestrian, or animal. This code is particularly relevant in urban settings where pedestrian traffic is high, and it captures incidents that may not involve traditional vehicular accidents but still result in significant morbidity. Accurate coding of this scenario is crucial for understanding the epidemiology of such injuries, which can inform public health initiatives aimed at improving road safety and reducing pedestrian injuries. Documentation should include details about the circumstances of the incident, the type of nonmotor vehicle involved, and the nature of the injuries sustained to ensure proper coding and analysis.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Determining the exact circumstances of the injury can be complex.
  • Differentiating between motor and nonmotor vehicle collisions requires careful documentation.
  • Involvement of multiple parties (e.g., pedestrians, cyclists) can complicate coding.
  • Accurate identification of the injury type and severity is necessary for proper coding.

Audit Risk Factors

  • Inadequate documentation of the incident details.
  • Failure to specify the type of nonmotor vehicle involved.
  • Misclassification of the injury type or severity.
  • Inconsistent coding practices among different coders.

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Emergency department notes should clearly document the mechanism of injury, including the type of nonmotor vehicle involved and the patient's condition upon arrival.

Common Clinical Scenarios

Patients presenting after being struck by a bicycle while exiting a vehicle.

Billing Considerations

Consideration should be given to the patient's overall health status and any pre-existing conditions that may affect recovery.

Trauma Surgery

Documentation Requirements

Trauma documentation must include detailed descriptions of the injury mechanism, anatomical locations affected, and any surgical interventions performed.

Common Clinical Scenarios

Trauma cases involving pedestrians struck by cyclists or other nonmotor vehicles.

Billing Considerations

Accurate coding is essential for trauma registries and research purposes.

Coding Guidelines

Inclusion Criteria

Use V46.4 When
  • According to ICD
  • 10 coding guidelines, external cause codes should be used in conjunction with the appropriate injury codes
  • It is essential to report the external cause code to provide context for the injury and to capture the circumstances surrounding the event

Exclusion Criteria

Do NOT use V46.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99283CPT Code

Emergency department visit, moderate severity

Clinical Scenario

Used for patients presenting with injuries from nonmotor vehicle collisions.

Documentation Requirements

Documentation must support the level of service provided, including history, examination, and medical decision-making.

Specialty Considerations

Emergency medicine specialists should ensure that all relevant details of the incident are captured.

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, including those involving nonmotor vehicles. This specificity aids in better tracking and analysis of injury patterns, which can inform public health initiatives.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of external causes of injuries, including those involving nonmotor vehicles. This specificity aids in better tracking and analysis of injury patterns, which can inform public health initiatives.

Reimbursement & Billing Impact

reimbursement.

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 types of injuries does V46.4 cover?

V46.4 covers injuries sustained by individuals boarding or alighting from a car who are then involved in a collision with a nonmotor vehicle, such as a bicycle or pedestrian.

How should I document an incident for V46.4?

Documentation should include the type of nonmotor vehicle involved, the circumstances of the incident, and the nature of the injuries sustained.