A92.31Billable
West Nile virus infection with encephalitis
- Chapter
- 1. Certain infectious and parasitic diseases
- Category
- A92
- Effective date
- October 1, 2026
Related codes in category A92
A92Other mosquito-borne viral feversA92.0Chikungunya virus diseaseYesA92.1O'nyong-nyong feverYesA92.2Venezuelan equine feverYesA92.3West Nile virus infectionA92.30West Nile virus infection, unspecifiedYesA92.32West Nile virus infection with oth neurologic manifestationYesA92.39West Nile virus infection with other complicationsYesA92.4Rift Valley feverYesA92.5Zika virus diseaseYesA92.8Other specified mosquito-borne viral feversYesA92.9Mosquito-borne viral fever, unspecifiedYes
Frequently asked questions
What is ICD-10 code A92.31?
A92.31 is an ICD-10-CM diagnosis code for West Nile virus infection with encephalitis.
Is A92.31 a billable code?
Yes. A92.31 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is A92.31 in?
A92.31 falls under Chapter 1: Certain infectious and parasitic diseases.
When did A92.31 become effective?
A92.31 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to A92.31?
A92.31 belongs to category A92, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.