Tick-borne viral encephalitis
ICD-10 A84.1 is a billable code used to indicate a diagnosis of tick-borne viral encephalitis.
Tick-borne viral encephalitis (TBE) is a viral infection that affects the central nervous system, primarily transmitted through the bite of infected ticks. The disease is endemic in certain regions of Europe and Asia, where the ticks are prevalent. Clinically, TBE can present with a range of neurological symptoms, including fever, headache, and in severe cases, encephalitis, which can lead to long-term neurological complications such as cognitive deficits, motor dysfunction, and seizures. The incubation period typically ranges from 7 to 14 days, after which patients may experience a biphasic illness characterized by an initial febrile phase followed by a symptom-free interval before the onset of neurological symptoms. Diagnosis is primarily based on clinical presentation and serological testing for specific antibodies against the TBE virus. Vaccination is available and recommended for individuals at high risk, such as those living in or traveling to endemic areas. Understanding the vaccination status of patients is crucial for accurate diagnosis and management.
Detailed clinical history, laboratory results, and vaccination status.
Patients presenting with fever and neurological symptoms after tick exposure.
Consideration of co-infections and regional epidemiology.
Neurological examination findings, imaging studies, and follow-up assessments.
Patients with confirmed TBE presenting with seizures or cognitive impairment.
Long-term follow-up for neurological sequelae.
Used when serological testing for TBE is performed.
Document the reason for testing and results.
Infectious disease specialists should ensure comprehensive testing.
Common symptoms include fever, headache, and neurological manifestations such as confusion, seizures, and motor dysfunction.
