B00.9
Herpesviral infection, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 8 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 9 never code together
B00code
A00-B99chapter
Excludes1
- certain localized infections - see body system-related chapters
Excludes2
- carrier or suspected carrier of infectious disease (Z22.-)Z22.-
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
- infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
- influenza and other acute respiratory infections (J00-J22)J00-J22
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
Alongside this code 8 same parent — B00
B00.0 Eczema herpeticum B00.1 Herpesviral vesicular dermatitis B00.2 Herpesviral gingivostomatitis and pharyngotonsillitis B00.3 Herpesviral meningitis B00.4 Herpesviral encephalitis B00.5 Herpesviral ocular disease category B00.7 Disseminated herpesviral disease B00.8 Other forms of herpesviral infections category
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.