Varicella encephalitis
ICD-10 B01.1 is a billable code used to indicate a diagnosis of varicella encephalitis.
Varicella encephalitis is a rare but serious complication of varicella (chickenpox) infection, primarily caused by the varicella-zoster virus (VZV). This condition typically manifests in individuals who have had varicella, particularly in those who are immunocompromised or have not been vaccinated. Symptoms may include fever, headache, confusion, seizures, and focal neurological deficits. The encephalitis can occur during the acute phase of varicella or even after the rash has resolved. Diagnosis is often confirmed through clinical evaluation, cerebrospinal fluid analysis, and imaging studies such as MRI, which may show characteristic changes. Treatment usually involves antiviral medications, supportive care, and management of neurological symptoms. Vaccination against varicella is crucial in preventing this complication, as it significantly reduces the incidence of varicella and its associated complications, including encephalitis. The condition can lead to long-term neurological sequelae in some patients, emphasizing the importance of early recognition and intervention.
Detailed neurological examination findings, imaging results, and lab tests.
Patients presenting with seizures, altered mental status, or focal neurological deficits following varicella.
Ensure comprehensive documentation of neurological assessments and any changes in mental status.
History of varicella infection, vaccination status, and treatment protocols.
Patients with varicella who develop neurological symptoms or complications.
Document the timeline of varicella infection and onset of encephalitis symptoms.
Used to confirm VZV in cases of suspected varicella encephalitis.
Document the reason for testing and any clinical symptoms.
Infectious disease specialists should ensure comprehensive documentation of the patient's history.
Common symptoms include fever, headache, confusion, seizures, and focal neurological deficits. Symptoms may vary based on the severity of the condition.
Vaccination against varicella is the most effective way to prevent varicella encephalitis. The varicella vaccine significantly reduces the incidence of chickenpox and its complications.
