Grasshopper, it sounds like you're with a group plan, but I can't quite tell (can you get subsidies with group plans by staying under 400% PL? I thought that was only for individual plans on the exchanges?) If you do have your own individual plan w/ your spouse, tread carefully with this.
Both Mulligan and I are in MO, and have Anthem high deductible HSA plans (the "Lumenos" policy). Anthem has refused to offer clarity on the future status of our HSA HDHP policy.
When you go to ehealthinsurance.com and get a current quote for the same policy we currently have, it comes up in the search for the current rates we're paying....but when you click on the policy for more info, under the "rate guarantee" part, it says "N/A"!!! Meanwhile, other plans, like a Coventry plan, at least say the rate guarantee is "11+ months".
This means that Anthem is not guaranteeing the policy premium in our state. And, technically, can cancel or close the policy at any point in time.
Please check your own policy for the fine print, and get something in writing from Anthem for the guarantee for that quote/policy you have. They can make things sound great by saying "just continue with your policy as-is" (as they recently said to me), but look for what they're NOT saying: they're NOT saying "your current premium/plan will remain in effect for the future".