Arthropod-borne viral fevers and viral hemorrhagic fevers
40 codes in this section
About Section A90-A99
Section A90-A99 (A90-A99) covers arthropod-borne viral fevers and viral hemorrhagic fevers. It sits within the Certain infectious and parasitic diseases chapter (A00-B99). This section contains 40 ICD-10-CM codes, 34 billable diagnoses you can submit on a claim, and 6 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in A90-A99
Grouped by 3-character root code. Click any code for full detail.
| A92.0 | Chikungunya virus disease | Billable |
| A92.1 | O'nyong-nyong fever | Billable |
| A92.2 | Venezuelan equine fever | Billable |
| A92.3 | West Nile virus infection | Header |
| A92.30 | West Nile virus infection, unspecified | Billable |
| A92.31 | West Nile virus infection with encephalitis | Billable |
| A92.32 | West Nile virus infection with other neurologic manifestation | Billable |
| A92.39 | West Nile virus infection with other complications | Billable |
| A92.4 | Rift Valley fever | Billable |
| A92.5 | Zika virus disease | Billable |
| A92.8 | Other specified mosquito-borne viral fevers | Billable |
| A92.9 | Mosquito-borne viral fever, unspecified | Billable |
| A93.0 | Oropouche virus disease | Billable |
| A93.1 | Sandfly fever | Billable |
| A93.2 | Colorado tick fever | Billable |
| A93.8 | Other specified arthropod-borne viral fevers | Billable |
| A95.0 | Sylvatic yellow fever | Billable |
| A95.1 | Urban yellow fever | Billable |
| A95.9 | Yellow fever, unspecified | Billable |
| A96.0 | Junin hemorrhagic fever | Billable |
| A96.1 | Machupo hemorrhagic fever | Billable |
| A96.2 | Lassa fever | Billable |
| A96.8 | Other arenaviral hemorrhagic fevers | Billable |
| A96.9 | Arenaviral hemorrhagic fever, unspecified | Billable |
| A98.0 | Crimean-Congo hemorrhagic fever | Billable |
| A98.1 | Omsk hemorrhagic fever | Billable |
| A98.2 | Kyasanur Forest disease | Billable |
| A98.3 | Marburg virus disease | Billable |
| A98.4 | Ebola virus disease | Billable |
| A98.5 | Hemorrhagic fever with renal syndrome | Billable |
| A98.8 | Other specified viral hemorrhagic fevers | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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