| | Conditions & Treatments | Hepatitis What phylum is the Hepatitis B virus in? Hepatitis B virus belongs to the Hepadnaviridae family, which is the only family in the Hepadnavirus phylum. Hepatitis - Related Articles How to Treat Hepatitis A Costs & Treatment of Hepatitis C Liver Disorders & Diseases Is Coffee Bad for the Liver? Do they test for hepatitis a when donating blood? Disinfectants That Destroy Hep B How to Reduce Iron Intake With Hep C