ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesA92.2

A92.2

West Nile virus infection.

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A92.2 is a billable code used to indicate a diagnosis of west nile virus infection..

Key Diagnostic Point:

West Nile virus infection is an arthropod-borne viral disease primarily transmitted to humans through the bite of infected mosquitoes. The virus is endemic in many regions, particularly in Africa, Europe, the Middle East, North America, and West Asia. Clinically, the infection can range from asymptomatic to severe neurological disease, including encephalitis and meningitis. Symptoms typically manifest 3 to 14 days after exposure and may include fever, headache, body aches, joint pain, vomiting, diarrhea, and rash. Severe cases can lead to neurological complications, particularly in older adults and immunocompromised individuals. Diagnosis is often confirmed through serological testing for West Nile virus-specific IgM antibodies in serum or cerebrospinal fluid. Given the potential for outbreaks, especially in warmer months, travel history to endemic areas is crucial for diagnosis and management. Proper coding of this condition is essential for accurate epidemiological tracking and resource allocation in public health.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Need for accurate travel history documentation.
  • Differentiation from other arboviral infections.
  • Potential for severe complications requiring detailed clinical documentation.
  • Variability in symptom presentation among different populations.

Audit Risk Factors

  • Inadequate documentation of travel history.
  • Failure to document neurological symptoms in severe cases.
  • Misclassification with other viral infections.
  • Lack of serological test results in the medical record.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed clinical notes on symptoms, travel history, and laboratory results.

Common Clinical Scenarios

Patients presenting with fever and neurological symptoms after travel to endemic areas.

Billing Considerations

Ensure all relevant lab results are included in the documentation.

Neurology

Documentation Requirements

Comprehensive neurological examination findings and imaging results.

Common Clinical Scenarios

Patients with encephalitis or meningitis symptoms linked to West Nile virus.

Billing Considerations

Documenting the onset and progression of neurological symptoms is critical.

Coding Guidelines

Inclusion Criteria

Use A92.2 When
  • According to ICD
  • 10 guidelines, A92
  • 2 should be used when a patient is diagnosed with West Nile virus infection, particularly when confirmed by serological testing
  • infection is documented

Exclusion Criteria

Do NOT use A92.2 When
  • Exclude codes for other viral infections unless co

Related CPT Codes

86788CPT Code

West Nile virus antibody test

Clinical Scenario

Used when a patient presents with symptoms suggestive of West Nile virus infection.

Documentation Requirements

Document the reason for testing and any relevant clinical findings.

Specialty Considerations

Infectious disease specialists should ensure comprehensive documentation of the patient's history and symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of West Nile virus infection, improving tracking and management of the disease. It has also enhanced the ability to differentiate between various arboviral infections.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of West Nile virus infection, improving tracking and management of the disease. It has also enhanced the ability to differentiate between various arboviral infections.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of West Nile virus infection, improving tracking and management of the disease. It has also enhanced the ability to differentiate between various arboviral infections.

Resources

Clinical References

  • •
    CDC West Nile Virus Information

Coding & Billing References

  • •
    CDC West Nile Virus Information

Frequently Asked Questions

What are the common symptoms of West Nile virus infection?

Common symptoms include fever, headache, body aches, joint pain, vomiting, diarrhea, and rash. Severe cases may lead to neurological symptoms such as confusion, seizures, or paralysis.