ICD-10 Code B00.89 – Other herpesviral infection (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B00.89 – Other herpesviral infection
What it is
B00.89 identifies a herpesviral infection that does not fit a more specific herpes code. Use it when documentation states an unusual or unspecified herpesvirus manifestation, and no narrower diagnosis is supported.
Clinical signs
Clinical features vary; refer to documentation. Herpesviral illness may include grouped vesicles, mucosal lesions, pain, or recurrent lesions, but the record must support the specific herpesvirus involvement.
When to use this code
Use B00.89 when the provider documents “other herpesviral infection” or describes a herpesvirus infection that is not classified elsewhere. It may apply when the site, type, or manifestation is not specific enough for a more detailed B00 code. Check documentation for the exact organism and presentation.
Do not use for
Do not use this code when the chart supports a more specific herpes diagnosis, such as oral, ocular, genital, or disseminated herpes. Also avoid it if the record does not confirm a herpesviral infection.
Coding tip
Before assigning B00.89, look for documentation that rules out a more specific herpes code.