ICD-10 Code A92.8 – Other specified mosquito-borne viral fevers (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A92.8 – Other specified mosquito-borne viral fevers
What it is
A92.8 identifies mosquito-borne viral fevers that do not fit a more specific ICD-10 category. Use it when the provider documents a mosquito-transmitted viral fever but names no better-defined diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Typical viral fever findings may include acute fever, headache, malaise, and muscle aches, but the exact syndrome depends on the specific mosquito-borne virus.
When to use this code
Use this code when the record clearly states a mosquito-borne viral fever and no specific virus or named disease is documented. It also applies when the provider documents an unspecified or other specified mosquito-borne viral fever rather than a more detailed diagnosis.
Do not use for
Do not use A92.8 if the chart identifies a more specific mosquito-borne infection with its own code. Check documentation; avoid using it for non-mosquito viral illnesses or when the diagnosis is only suspected.
Coding tip
Look for the exact organism or disease name in the assessment; if it is not documented, A92.8 may be the best available choice.