Hi jusjunkin and welcome,
Hydrocodone tabs will not likely have much effect on your liver, at the dose your taking.
Your test for actin (smooth muscle antibody), may be the cause. The 2nd rounds of labs, will tell your dr if you have AIH. The Ct scan will tell your dr, the condition of your liver.
Let me know your results . If you can get a copy of your labs it would be helpful. If your positive, we have a moderator who also has (AIH), who is very knowledgeable.. and could be helpful for you.