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B34Non-billableSave

B34 - Viral infection of unspecified site

ICD-10-CM Chapter 1: Certain infectious and parasitic diseases · B25-B34 Other viral diseases (B25-B34) · Top-level category · FY2027

Coding Guidance

B34 is a non-billable heading. Report one of the 7 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom B34

Mutually exclusive: these conditions are never reported together with this code.

  • anogenital human papillomavirus infection (A63.0)
  • cytomegaloviral disease NOS (B25.9)
  • herpesvirus [herpes simplex] infection NOS (B00.9)
  • retrovirus infection NOS (B33.3)
  • viral agents as the cause of diseases classified elsewhere (B97.-)
  • viral warts due to human papillomavirus infection (B07)
IncludesFrom Chapter A00-B99

Conditions this code covers.

  • diseases generally recognized as communicable or transmissible
Excludes 2 — Not Included HereFrom Chapter A00-B99

Not part of this code; report both codes when the patient has both conditions.

  • 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)
Use Additional CodeFrom Chapter A00-B99

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify resistance to antimicrobial drugs (Z16.-)

More Specific Codes (7)

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

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with B34.