B34
Viral infection of unspecified site
B34 is a non-billable ICD-10-CM code category for viral infection of unspecified site. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are B34.0 Adenovirus infection, unspecified; B34.1 Enterovirus infection, unspecified; B34.2 Coronavirus infection, unspecified; B34.3 Parvovirus infection, unspecified and 3 more. Its coding notes include a Use additional code instruction, 6 Excludes1 entries and 5 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (5 notes)
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- diseases generally recognized as communicable or transmissible
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry
More specific codes under B34 7
- B34.0Adenovirus infection, unspecifiedBillable
- B34.1Enterovirus infection, unspecifiedBillable
- B34.2Coronavirus infection, unspecifiedBillable
- B34.3Parvovirus infection, unspecifiedBillable
- B34.4Papovavirus infection, unspecifiedBillable
- B34.8Other viral infections of unspecified siteBillable
- B34.9Viral infection, unspecifiedBillable