ICD-10 Code B16.2 – Acute hepatitis B without delta-agent with hepatic coma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B16.2 – Acute hepatitis B without delta-agent with hepatic coma
What it is
This code identifies an acute hepatitis B infection without delta-agent that has progressed to hepatic coma. Use it for severe liver involvement caused by hepatitis B, not chronic infection or other hepatitis types.
Clinical signs
Clinical features vary; refer to documentation. You may see jaundice, acute hepatitis symptoms, and altered mental status consistent with hepatic coma or severe hepatic encephalopathy.
When to use this code
Use B16.2 when the record clearly documents acute hepatitis B without delta-agent and hepatic coma. The provider should link the coma to the acute hepatitis B episode. If the note only says hepatitis B or liver failure, check documentation.
Do not use for
Do not use this code for chronic hepatitis B, hepatitis B with delta-agent, or acute hepatitis B without coma. If hepatic coma is not documented, select the appropriate non-coma acute hepatitis B code.
Coding tip
Confirm that both acute hepatitis B and hepatic coma are documented together before assigning B16.2.