Before starting TTC, my GYN did bloodwork for CF and a couple other things. (So long ago, I forget!) When we started seeing an RE, they did highly recommend a genetic disease testing on both DH and I. (Counsyl was the name of it--it tested your saliva.)
The cost of our testing was actually covered, because they considered it diagnostic. Hopefully you are pleasantly surprised and it is covered for you, as well.