West Nile virus infection with encephalitis
ICD-10 A92.31 is a billable code used to indicate a diagnosis of west nile virus infection with encephalitis.
West Nile virus (WNV) infection with encephalitis is a serious neurological condition caused by the West Nile virus, which is primarily transmitted to humans through the bite of infected mosquitoes. The virus can lead to a range of symptoms, from mild flu-like signs to severe neurological complications, including encephalitis, which is characterized by inflammation of the brain. Patients may present with fever, headache, neck stiffness, altered mental status, and neurological deficits. Diagnosis is typically confirmed through serological testing for WNV-specific IgM antibodies in serum or cerebrospinal fluid (CSF). Encephalitis can result in long-term neurological sequelae, making early recognition and management critical. The condition is more prevalent in certain geographic areas, particularly during warmer months when mosquito populations are high. Travel history to endemic regions is essential for diagnosis, as it can help identify potential exposure to the virus. Given the potential for severe outcomes, including mortality, timely intervention and supportive care are vital for affected individuals.
Detailed travel history, clinical symptoms, laboratory test results, and neurological assessments.
Patients presenting with fever and neurological symptoms after travel to endemic areas.
Ensure all relevant laboratory results are included in the documentation to support the diagnosis.
Comprehensive neurological examination findings, imaging studies, and CSF analysis.
Patients with acute onset of neurological deficits and confirmed WNV infection.
Document the extent of neurological impairment and any long-term sequelae.
Used to confirm diagnosis in patients with suspected WNV infection.
Document the reason for testing and any relevant clinical findings.
Infectious disease specialists should ensure comprehensive testing is performed.
Common symptoms include fever, headache, neck stiffness, confusion, seizures, and other neurological deficits. Severe cases may lead to coma or death.
