B34.9
Viral infection, unspecified
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
Viremia NOS
anogenital human papillomavirus infection (A63.0) cytomegaloviral disease NOS (B25.9) herpesvirus [herpes simplex] infection NOS (B00.9) retrovirus infection NOS (B33.3) viral agents as the cause of diseases classified elsewhere (B97.-) viral warts due to human papillomavirus infection (B07)
diseases generally recognized as communicable or transmissible
certain localized infections - see body system-related chapters
carrier or suspected carrier of infectious disease (Z22.-) infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-) infectious and parasitic diseases specific to the perinatal period (P35-P39) influenza and other acute respiratory infections (J00-J22)
code to identify resistance to antimicrobial drugs (Z16.-)
Official Guidelines for B34.9
FY 2026 ›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
Find B34.9 in the alphabetic index
9 index paths lead to this code
- Viremia
- Disease, diseased › nonarthropod-borne NOS
- Disease, diseased › viral, virus
- Infection, infected, infective › virus, viral NOS
- Syndrome › virus
- Arthritis, arthritic › in › viral disease NEC
- Disease, diseased › viral, virus › nonarthropod-borne NOS
- Infection, infected, infective › virus, viral NOS › unspecified nature or site
- Otitis › externa › in › viral disease NEC