B18
Chronic viral hepatitis
B18 is a non-billable ICD-10-CM code category for chronic viral hepatitis. 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 B18.0 Chronic viral hepatitis B with delta-agent, B18.1 Chronic viral hepatitis B without delta-agent, B18.2 Chronic viral hepatitis C, B18.8 Other chronic viral hepatitis and 1 more. Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 7 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
- code, if applicable, for ascites (R18.8)
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 (7 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.
- Carrier of viral hepatitis
Also from chapter/block level (1 note)
- diseases generally recognized as communicable or transmissible