West Nile virus infection of the central nervous system
ICD-10 A83.2 is a billable code used to indicate a diagnosis of west nile virus infection of the central nervous system.
West Nile virus (WNV) infection of the central nervous system (CNS) is a serious condition that can lead to neurological complications such as encephalitis and meningitis. The virus is primarily transmitted to humans through the bite of an infected mosquito, and while many individuals may remain asymptomatic, a subset may develop severe neurological manifestations. Symptoms can include fever, headache, neck stiffness, altered mental status, and seizures. Diagnosis is typically confirmed through serological testing or lumbar puncture to analyze cerebrospinal fluid (CSF) for the presence of the virus or antibodies. The risk of severe disease increases with age and in individuals with certain comorbidities. Vaccination against WNV is not currently available for humans, making prevention through mosquito control and personal protective measures critical. Management of WNV CNS infections is primarily supportive, focusing on symptomatic relief and monitoring for complications.
Detailed patient history, laboratory results, and clinical findings related to WNV.
Patients presenting with fever and neurological symptoms after mosquito exposure.
Ensure documentation includes the timeline of symptoms and any prior health conditions.
Neurological examination findings, imaging results, and CSF analysis.
Patients with acute encephalitis or meningitis symptoms.
Document all neurological assessments and any changes in mental status.
Used when serological testing for WNV is performed.
Document the reason for testing and any relevant clinical findings.
Infectious disease specialists should ensure comprehensive documentation of exposure history.
Common symptoms include fever, headache, body aches, joint pain, vomiting, diarrhea, and rash. Severe cases may lead to neurological symptoms such as confusion, seizures, and paralysis.
