My OB practice just asks if you want to have the NT scan (maybe if you have certain risk factors they're more insistent). They said to check with our insurance to make sure it would be paid for. I called our insurance and got a girl who took forever to even figure out what I was talking about. Then she said it was covered "as long as it's medically necessary. So as long as you're not just wanting it or the doctors doing it to bill more, etc."

That didn't exactly answer my question since it's not something that my OB requires. On the other hand, I don't know how they would know that it was "optional," either. Anyone else have a situation like this with an ultrasound?