Japanese encephalitis.
Chapter 1:Certain infectious and parasitic diseases
ICD-10 A75.1 is a billable code used to indicate a diagnosis of japanese encephalitis..
Japanese encephalitis (JE) is a viral infection caused by the Japanese encephalitis virus (JEV), primarily transmitted through the bite of infected mosquitoes, particularly the Culex species. It is endemic in many parts of Asia and the western Pacific, with transmission occurring in rural agricultural areas where rice cultivation provides breeding grounds for mosquitoes. The clinical presentation of JE can range from asymptomatic infection to severe neurological disease. Symptoms typically appear 5 to 15 days after exposure and may include fever, headache, vomiting, confusion, seizures, and in severe cases, coma or death. The disease can lead to long-term neurological sequelae in survivors. Diagnosis is primarily based on clinical presentation and confirmed through serological testing or PCR. Vaccination is available and recommended for travelers to endemic areas, especially those who will be spending extended periods outdoors. Public health measures to control mosquito populations are also critical in preventing JE outbreaks.
Detailed travel history, vaccination status, and laboratory confirmation.
Patients presenting with fever and neurological symptoms after travel to endemic areas.
Ensure documentation reflects the severity of symptoms and any neurological sequelae.
Neurological examination findings, imaging results, and treatment plans.
Patients with acute encephalitis symptoms requiring differential diagnosis.
Document any long-term effects or rehabilitation needs.
Used to confirm diagnosis in suspected cases of JE.
Document the reason for testing and any relevant clinical findings.
Infectious disease specialists should ensure comprehensive documentation of travel history.
Japanese encephalitis is primarily transmitted through the bite of infected Culex mosquitoes, which breed in rice fields and other stagnant water sources.
