Our insurance covers psychological services such as counseling but not testing such as IQ testing. The psych who dx dd11 with ADD was covered but she didn't really do much in the way of testing save for reviewing prior IQ and achievement tests, having teachers and parents fill out some sort of scale, and meeting w/ dd and me.
Even after years of dealing with it, I'm not sure how one goes about diagnosing things like ADD or dyslexia other than comparing IQ and achievement, possibly looking @ patterns on IQ subtest scores, and subjective things like interviewing parents, kids, and teachers or having them fill out rating scales. We were told that the IQ/achievement piece wouldn't be covered even if it was for the purpose of looking for a LD.