Health Insurance Oddities

This year my son graduated from Virginia Tech and received his commission in the Army. Last month he reported for duty so I called Aetna to drop him from my health insurance. The customer representative said that I could not do that. I said, “Whoa! I am his dad and I am paying the bill. Are you saying I cannot drop him from the plan?” She said that since he was over the age of 21 he had to call or write them requesting to be dropped from the plan. Wow! Talk about stupid! I thought this might be an unintended consequence from the Affordable Care Act but I have not found any rules or regulations requiring the consent of the child if they are over 21.