A92.3 – West Nile virus infection
ICD-10-CM 2027 diagnosis code · Arthropod-borne viral fevers and viral hemorrhagic fevers
ICD-10-CM code
A92.3
- Code
A92.3(claims format:A923)- Description
- West Nile virus infection
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- A90-A99 Arthropod-borne viral fevers and viral hemorrhagic fevers
- Parent codes
- A92
Billable codes under A92.3
A92.3 is a header code and cannot be used on claims. Choose the most specific code:
Notes for A92.3
Applicable to:
- West Nile fever
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
A92 – Other mosquito-borne viral fevers
Excludes1 (not coded here):
- Ross River disease (B33.1)
Related codes in A92
Frequently asked questions
What is ICD-10 code A92.3?
A92.3 is the ICD-10-CM code for west Nile virus infection, in the block A90-A99 (Arthropod-borne viral fevers and viral hemorrhagic fevers).
Is A92.3 a billable code?
No. A92.3 is a header code with more specific child codes; report one of the billable codes listed above.
What category does A92.3 belong to?
It belongs to category A92 – Other mosquito-borne viral fevers.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.