B16
Acute hepatitis B
B16 is a non-billable ICD-10-CM code category for acute hepatitis B. 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 B16.0 Acute hepatitis B with delta-agent with hepatic coma, B16.1 Acute hepatitis B with delta-agent without hepatic coma, B16.2 Acute hepatitis B without delta-agent with hepatic coma and B16.9 Acute hepatitis B without delta-agent and without hepatic coma. 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.
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.
Also from chapter/block level (1 note)
- diseases generally recognized as communicable or transmissible