Future insurance coverage

So one of the reasons that I chose the sleeve over the LB is because there will be no need for umpteen follow up visits and fill appointments after the surgery. My question is: for how long after the surgery do I need to worry about keeping this current insurance (that covered the surgery) and/or checking future policies to make sure they cover bariatric procedures?

I am currently covered by my husband's insurance AND my own insurance specifically because the insurance through my work covered the surgery but my hubby's did not. I would like to be able to drop the second policy after this year but don't want to do it too soon if I'm not considered "in the clear" yet.