2025 ICD-10-CM code A84.0
Far Eastern tick-borne encephalitis (TBE-FE), formerly known as Russian spring-summer encephalitis (RSSE).
Medical necessity for testing and treatment is based on clinical presentation and risk factors, such as travel to or residence in a TBE-FE endemic area, known tick bites, or consumption of potentially contaminated animal products.
Diagnosis of TBE-FE involves patient history, physical and neurological examination, and imaging studies (CT, EEG, MRI). Confirmation requires testing cerebrospinal fluid (CSF) and blood for the virus and IgM antibodies. Treatment is symptomatic and may include corticosteroids, rest, fluids, pain relievers, and sedatives. Severe cases require hospitalization.
- Certain infectious and parasitic diseases (A00-B99)
- Viral and prion infections of the central nervous system (A80-A89)
In simple words: Far Eastern tick-borne encephalitis is a brain infection spread by ticks. It can cause fever, headache, stiff neck, and in severe cases, brain swelling and seizures.
Far Eastern tick-borne encephalitis (TBE-FE), formerly known as Russian spring-summer encephalitis (RSSE), is a viral infection of the central nervous system transmitted by ticks. It is caused by the TBEV-FE virus and is considered more severe than European tick-borne encephalitis (TBE-EU).
Example 1: A patient presents with fever, headache, stiff neck, photophobia, nausea, and vomiting after a recent trip to a TBE-FE endemic area. Testing confirms the presence of the virus and IgM antibodies., A patient develops seizures, confusion, and partial paralysis after consuming unpasteurized milk from an infected animal in a region where TBE-FE is common., An asymptomatic individual is diagnosed with TBE-FE through routine blood testing after a known tick bite in a high-risk area.
Documentation should include details of exposure (tick bite, consumption of unpasteurized milk), symptoms, travel history, physical and neurological exam findings, and laboratory results (CSF and blood tests, imaging studies).
- Specialties:Infectious Disease, Neurology
- Place of Service:Inpatient Hospital, Office