Scared, you are right that Al-Anon focuses on living with an active alcoholic and looking at what part you play in the addiction. As a long-time sober alcoholic myself, I could never live with an active alkie. You can have one conversation with him--when he is somewhat sober, not when he's drunk--and flat out tell him he is going to die a horrible death if he doesn't stop drinking now. If he needs help, he can go to detox and/or AA. I have a feeling he may not be able to stop by himself and probably needs detox. Drinking alcoholically really is a slow form of suicide. But he does have to want to stop and want to live. By his saying that you smoke, he is looking for justification for his drinking. You can tell him that you might develop lung cancer or COPD, but it will be nobody's fault but your own.
I also think he most likely has cirrhosis and is working towards end-stage liver disease, if not already there. As you may have read, I have hep C and cirrhosis and had liver cancer. However, because I've been sober 24+ years and eat the right diet...generally try to take care of myself to the best of my ability (make ALL doctor appointments, blood work and scans scheduled), I was successfully treated for cancer and the cirrhosis is stable. Next year, I hope to tackle hep C when the new treatment becomes available. It takes being very proactive and positive to halt the disease progression. It may already be too late for him, I don't know--but if he doesn't stop drinking, he will definitely die sooner than later.
If you read the other threads and all the things people have posted, you will learn a lot. Also take a look at the information in the Hepatitis Resources folder at the top of the page. It is about liver disease, not just hepatitis--although hepatitis means inflammation of the liver and can apply to cirrhosis, AIH, etc., not just viral hepatitis.
You will also find a lot of support in the Caregivers thread.
Perhaps the Primary Care doc thought a GI doc would be best since your husband is still drinking and not a candidate for transplant. However, it wouldn't hurt to ask for a hepatology consult, too.
Hugs,
Connie