After you finish your wages and income portion, and you go into deductions and credits, you're asked did you have medical expenses. If you answered yes, then a few questions in, you are asked about prescription medications expenses, among other things. Then it will say we're done with medical expenses. Immediately after that, you should have gotten the question about the 1095-A (yes or no). That's how I got asked about the 1095-A; hope this helps.
