ICD-10 Code A92 – Other mosquito-borne viral fevers (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A92 – Other mosquito-borne viral fevers
What it is
Use A92 for mosquito-borne viral fever illnesses that are not classified elsewhere. It identifies a viral infection spread by mosquitoes, but the exact virus is not specified in the record.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include fever and other acute viral illness symptoms, but you should code only when the chart supports a mosquito-borne viral fever diagnosis.
When to use this code
Use this code when the provider documents a mosquito-borne viral fever and does not name a more specific ICD-10-CM diagnosis. It is appropriate for confirmed or documented suspected cases when the record supports this category. If the virus is identified more specifically, check documentation for a more precise code.
Do not use for
Do not use A92 for mosquito-borne diseases with a different coded diagnosis or when the chart names a more specific viral fever code. Do not assign it for nonspecific fever without documentation of mosquito-borne viral infection.
Coding tip
Look for the organism, transmission route, and provider wording before assigning A92.