Sure chipper,
My husbands CF doctor actually put the paperwork in for me. It worked a little different for us because even though I don't see him as a doctor, I'm in the military and he's a military doc. and it was fine for him to put the paperwork in.
However, I DID have to print all of the Info. off of Ambry's website and take it into him. Just to make his life easier and "put it in his face" so to speak. The info I printed was 1 page about their expanded/amplified test, plus some pages on the insurance and billing information.
My husbands CF doctor requested the test through my insurance Tricare, and they bucked and wanted a "standard" test first. I already had one of those, and so he wrote a note stating we were going to start trying to have a baby (he DID NOT mention the IVF) and gave the percentages of a child of ours ending up with CF if I was a carrier too. He explained that more and more rare mutations are popping up all the time and it would behoove the insurance company to cover testing so we could make an educated decision about proceeding with a pregnancy knowing how likely it was that our child would have CF.
Many insurance companies wish for a person to start with the standard test. But if I were you, I'd go for the "expanded panel" test first and see if they cover that. It's likely they'll deny it, but you can have your CF doctor (or another doctor educated in CF) write a letter about how important it is to know the carrier status, especially if someone has CF and also if the other spouse is a known carrier.
Hope that helps, feel free to ask me anymore questions.