Acute hepatitis B (B16)

ICD-10 code B16 and its subcodes represent different forms of acute hepatitis B, a viral liver infection that can present with or without complications such as hepatic coma or co-infection with the delta agent (hepatitis D). These codes are used to specify the exact clinical scenario of hepatitis B infection for accurate diagnosis and treatment tracking.

The ICD-10 code for acute hepatitis B includes distinct categories: B16.0 and B16.1 cover cases involving the delta agent (hepatitis D virus), with B16.0 indicating presence of hepatic coma, also known as "hepatic coma due to viral hepatitis D," and B16.1 indicating absence of coma. Codes B16.2 and B16.9 describe acute hepatitis B without the delta agent, with B16.2 representing cases complicated by hepatic coma, sometimes called "hepatic coma due to acute hepatitis B," while B16.9 denotes cases without coma. Synonyms such as "acute type B viral hepatitis" and "acute fulminating viral hepatitis" help clarify these codes for healthcare providers coding viral hepatitis cases or resolving uncertainty between hepatitis B forms and severity.