Thanks, everyone, for your many helpful comments. I received a call today from a nearby reputable drug treatment facility (different from the one my son was at before) asking me for my health insurance information so they could check to see if my AS was eligible for in-patient rehab, since it is so soon after the last round. Apparently, my AS had, ON HIS OWN, contacted the facility and asked to be admitted. Turns out a brief rehab/detox stay is covered, and he is going in tomorrow. I haven't been able to get in touch with my son since I was informed of the approval (maybe he is having one last hurrah with his DOC), but I think this is very good news. Assuming he actually goes in tomorrow, of course.