A90-A99
Arthropod-borne viral fevers and viral hemorrhagic fevers
Codes in this block
40 codes
Billableusable codeNon-billableheader / grouping codeRisk-adjusting
- A90Dengue fever [classical dengue]Billable
- A91Dengue hemorrhagic feverBillable
- A92Other mosquito-borne viral feversNon-billable
- A92.0Chikungunya virus diseaseBillable
- A92.1O'nyong-nyong feverBillable
- A92.2Venezuelan equine feverBillable
- A92.3West Nile virus infectionNon-billable
- A92.30West Nile virus infection, unspecifiedBillable
- A92.31West Nile virus infection with encephalitisBillable
- A92.32West Nile virus infection with other neurologic manifestationBillable
- A92.39West Nile virus infection with other complicationsBillable
- A92.4Rift Valley feverBillable
- A92.5Zika virus diseaseBillable
- A92.8Other specified mosquito-borne viral feversBillable
- A92.9Mosquito-borne viral fever, unspecifiedBillable
- A93Other arthropod-borne viral fevers, not elsewhere classifiedNon-billable
- A93.0Oropouche virus diseaseBillable
- A93.1Sandfly feverBillable
- A93.2Colorado tick feverBillable
- A93.8Other specified arthropod-borne viral feversBillable
- A94Unspecified arthropod-borne viral feverBillable
- A95Yellow feverNon-billable
- A95.0Sylvatic yellow feverBillable
- A95.1Urban yellow feverBillable
- A95.9Yellow fever, unspecifiedBillable
- A96Arenaviral hemorrhagic feverNon-billable
- A96.0Junin hemorrhagic feverBillable
- A96.1Machupo hemorrhagic feverBillable
- A96.2Lassa feverBillable
- A96.8Other arenaviral hemorrhagic feversBillable
- A96.9Arenaviral hemorrhagic fever, unspecifiedBillable
- A98Other viral hemorrhagic fevers, not elsewhere classifiedNon-billable
- A98.0Crimean-Congo hemorrhagic feverBillable
- A98.1Omsk hemorrhagic feverBillable
- A98.2Kyasanur Forest diseaseBillable
- A98.3Marburg virus diseaseBillable
- A98.4Ebola virus diseaseBillable
- A98.5Hemorrhagic fever with renal syndromeBillable
- A98.8Other specified viral hemorrhagic feversBillable
- A99Unspecified viral hemorrhagic feverBillable
Official Guidelines for A90-A99
FY 2026 ›I.C.1Chapter-specific guidanceChapter 1: Certain Infectious and Parasitic Diseases (A00-B99), U07.1, U09.9
Subsections
- I.C.1.aHuman Immunodeficiency Virus (HIV) Infections
- I.C.1.bInfectious agents as the cause of diseases classified to other chapters
- I.C.1.cInfections resistant to antibiotics
- I.C.1.dSepsis, Severe Sepsis, and Septic Shock Infections resistant to antibiotics
- I.C.1.eMethicillin Resistant Staphylococcus aureus (MRSA) Conditions
- I.C.1.fZika virus infections
- I.C.1.gCoronavirus infections
Sections that reference codes in A90-A99