B34
Viral infection of unspecified site
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
B34code
Excludes1
- anogenital human papillomavirus infection (A63.0)A63.0A63.0A63.0
- cytomegaloviral disease NOS (B25.9)B25.9B25.9B25.9
- herpesvirus [herpes simplex] infection NOS (B00.9)B00.9B00.9B00.9
- retrovirus infection NOS (B33.3)B33.3B33.3B33.3
- viral agents as the cause of diseases classified elsewhere (B97.-)B97.-B97.-B97.-
- viral warts due to human papillomavirus infection (B07)B07B07B07
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 2
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 7
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.