B34Header code — not billable

Viral infection of unspecified site

Chapter
1. Certain infectious and parasitic diseases
Category
B34
Effective date
October 1, 2026

Related codes in category B34

B34.0Adenovirus infection, unspecifiedYesB34.1Enterovirus infection, unspecifiedYesB34.2Coronavirus infection, unspecifiedYesB34.3Parvovirus infection, unspecifiedYesB34.4Papovavirus infection, unspecifiedYesB34.8Other viral infections of unspecified siteYesB34.9Viral infection, unspecifiedYes

Frequently asked questions

What is ICD-10 code B34?

B34 is an ICD-10-CM diagnosis code for Viral infection of unspecified site.

Is B34 a billable code?

No. B34 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is B34 in?

B34 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B34 become effective?

B34 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B34?

B34 belongs to category B34, which includes 7 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.