ICD-10 Code B10.89 – Other human herpesvirus infection (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B10.89 – Other human herpesvirus infection
What it is
B10.89 identifies an infection caused by a human herpesvirus that does not fit a more specific ICD-10 category. Use it for documented herpesvirus infections when the exact type is not otherwise coded.
Clinical signs
Clinical features vary; refer to documentation. Herpesvirus infections may present with fever, rash, mucocutaneous lesions, lymphadenopathy, or organ-specific findings depending on the virus and site involved.
When to use this code
Use this code when the record clearly states an other human herpesvirus infection and the provider does not identify a more specific herpesvirus diagnosis. It is appropriate when the documentation supports infection but does not map to a narrower code.
If the chart names a specific herpesvirus or a related complication, code the more specific diagnosis instead. Check documentation for the exact organism, anatomic site, and any associated manifestations.
Do not use for
Do not use B10.89 for unspecified viral illness or for herpes simplex or varicella-zoster infections. Check documentation if the note names a different herpesvirus or a noninfectious herpes-related condition.
Coding tip
Code the most specific herpesvirus diagnosis available; use B10.89 only when the provider documents an other human herpesvirus infection without a better option.