A83.1

Clinical Information

• A form of arboviral encephalitis which primarily affects horses) endemic to western and central regions of north america. The causative organism encephalomyelitis virus, western equine) may be transferred to humans via the bite of mosquitoes culex tarsalis and others). Clinical manifestations include headache and influenza-like symptoms followed by alterations in mentation, seizures, and coma. Death occurs in a minority of cases. Survivors may recover fully or be left with residual neurologic dysfunction, including parkinsonism, postencephalitic. from Joynt, Clinical Neurology, 1996, ch26, pp8-9)

• A mosquito-born viral infection caused by the western equine encephalitis virus. The signs and symptoms range from flu-like illness to permanent central nervous system damage, coma, and death.

• Form of arboviral encephalitis which primarily affects horses, endemic to western and central north america; the virus may be transferred to humans via mosquito bite; clinical manifestations include headache and influenza-like symptoms followed by alterations in mentation, seizures and coma; survivors may be left with residual neurologic dysfunction.

Details

• A83.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM A83.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of A83.1 – other international versions of ICD-10 A83.1 may differ.