ICD-10-CM Diagnosis Code (2025)
Official Description for A83
Mosquito-borne viral encephalitis
Coding Notes & Guidelines for A83
Includes Notes
mosquito-borne viral meningoencephalitis
Excludes2: Not Included Here
- Venezuelan equine encephalitis (A92.2)
- West Nile fever (A92.3-)
- West Nile virus (A92.3-)
Inclusion Terms
Kunjin virus disease
Inclusion Terms
- California meningoencephalitis
- La Crosse encephalitis
Child Codes (More Specific Codes for A83):
A83.0 - Japanese encephalitis
A83.1 - Western equine encephalitis
A83.2 - Eastern equine encephalitis
A83.3 - St Louis encephalitis
A83.4 - Australian encephalitis
A83.5 - California encephalitis
A83.6 - Rocio virus disease
A83.8 - Other mosquito-borne viral encephalitis
A83.9 - Mosquito-borne viral encephalitis, unspecified
About ICD-10-CM Code A83 (Mosquito-borne viral encephalitis)
ICD-10-CM code A83 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM A83 became effective on October 1, 2024.
This page provides detailed information about A83 - Mosquito-borne viral encephalitis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Mosquito-borne viral encephalitis.