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ICD-10 Guide
ICD-10 CodesA92.32

A92.32

West Nile virus infection with other neurologic manifestation

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

Code Description

ICD-10 A92.32 is a billable code used to indicate a diagnosis of west nile virus infection with other neurologic manifestation.

Key Diagnostic Point:

West Nile virus (WNV) infection is an arthropod-borne viral disease primarily transmitted by mosquitoes. The infection can lead to a range of clinical manifestations, from asymptomatic cases to severe neurological diseases such as encephalitis and meningitis. The neurologic manifestations associated with WNV infection can include altered mental status, seizures, and acute flaccid paralysis. Patients may present with fever, headache, and myalgia, but the presence of neurologic symptoms indicates a more severe form of the disease. Diagnosis is typically confirmed through serological testing for WNV-specific IgM antibodies in serum or cerebrospinal fluid (CSF). Travel history is crucial, as WNV is endemic in certain regions, particularly in North America, and outbreaks can occur in areas where the virus is not typically found. Understanding the epidemiology of WNV, including potential exposure to mosquito vectors, is essential for accurate diagnosis and management. The clinical course can vary significantly, and while many patients recover fully, some may experience long-term neurological sequelae.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of neurologic manifestations complicating diagnosis
  • Need for serological confirmation of WNV infection
  • Differentiation from other viral encephalitides
  • Potential for co-infection with other arboviruses

Audit Risk Factors

  • Inadequate documentation of neurologic symptoms
  • Failure to document travel history or exposure risk
  • Misclassification of WNV infection severity
  • 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 neurologic symptoms after travel to endemic areas.

Billing Considerations

Ensure all relevant lab results are included in the documentation.

Neurology

Documentation Requirements

Neurological examination findings, imaging studies, and treatment plans.

Common Clinical Scenarios

Patients with acute flaccid paralysis or encephalitis symptoms.

Billing Considerations

Document the onset and progression of neurologic symptoms thoroughly.

Coding Guidelines

Inclusion Criteria

Use A92.32 When
  • According to ICD
  • 10 coding guidelines, A92
  • 32 should be used when there is clear documentation of neurologic manifestations associated with WNV infection
  • It is essential to ensure that the diagnosis is supported by laboratory findings and that any co
  • existing conditions are accurately coded

Exclusion Criteria

Do NOT use A92.32 When
No specific exclusions found.

Related CPT Codes

86788CPT Code

West Nile virus antibody test

Clinical Scenario

Used to confirm diagnosis in patients with suspected WNV infection.

Documentation Requirements

Document the reason for testing and results.

Specialty Considerations

Infectious disease specialists should ensure comprehensive lab results are included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like WNV infection, improving the accuracy of epidemiological data and enhancing the ability to track outbreaks and manage public health responses.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like WNV infection, improving the accuracy of epidemiological data and enhancing the ability to track outbreaks and manage public health responses.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like WNV infection, improving the accuracy of epidemiological data and enhancing the ability to track outbreaks and manage public health responses.

Resources

Clinical References

  • •
    CDC West Nile Virus Overview

Coding & Billing References

  • •
    CDC West Nile Virus Overview

Frequently Asked Questions

What are the common symptoms of West Nile virus infection?

Common symptoms include fever, headache, body aches, nausea, vomiting, and in severe cases, neurologic symptoms such as confusion, seizures, and paralysis.