Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99) ICD-10-CM
The A90–A99 section covers arthropod-borne viral fevers and viral hemorrhagic fevers with 40 ICD-10-CM diagnosis codes, of which 34 are billable in fiscal year 2027. The section is organized into the 9 code ranges listed below.
Code Ranges in This Section 9 ranges · 40 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the A90–A99 Code Range
Dengue and yellow fever appear here alongside other viral fevers associated with mosquitoes, sandflies, or ticks, and viral hemorrhagic fevers.
A90 identifies classical dengue, while A91 identifies dengue hemorrhagic fever. A92 separates other mosquito-borne fevers by named infection, including West Nile virus infection and Zika virus disease. A93 groups other arthropod-borne fevers, including sandfly fever and Colorado tick fever. A94 is for unspecified arthropod-borne viral fever.
A95 separates sylvatic, urban, and unspecified yellow fever. A96 separates arenaviral hemorrhagic fevers by named disease, including Lassa fever. A98 includes other named viral hemorrhagic fevers and Marburg and Ebola virus diseases. A99 is unspecified viral hemorrhagic fever.
Questions About This Page
How many codes are in the A90-A99 range?
The A90-A99 range contains 40 ICD-10-CM diagnosis codes in FY 2027. 34 of them are billable, and the rest are category headers that organize the section.
What conditions does A90-A99 cover?
The range covers arthropod-borne viral fevers and viral hemorrhagic fevers. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
