Are you certain he said the word "viral". Hepatitis means inflammation. You liver can have inflamation for many different reasons.....viral hepatitis being one of them. If you are sure you tested negative for antibodies for A, B and C, I would suggest going back to the doctor for clarification.
A biopsy coming back with hepatic tissue is kinda the reason for having a biopsy.....to get a sample of hepatic tissue (liver tissue) The results whould have told them more that that. Again, I suggest going back for clarification.
Sorry....I see you have an appointment today....ask, ask, ask and then give us an update. Good luck =)
I don't know how the first doctor could diagnose viral hepatitiis if you tested negative for all the main types-A,B and C.
The specialist you are seeing at the teaching hospital should be able to order the correct tests to form a proper diagnosis.