With my son, I spent 4 weeks on the phone trying to figure out why I was being charged for tests and a scan that should have been covered under my prenatal insurance. The clinic kept sending the paperwork to insurance coding the blood tests as 'pregnancy test-confirmation' (or something like that) meaning it was a blood test to confirm my pregnancy and my insurance doesn't cover prenatal care until the pg is confirmed. Hence the reason why insurance wasn't covering anything. The coding lady said that the first test was coded right but the followup labs should have been coded as 'history of miscarriage'. Once that got straightened out, all was well and they put a note in my chart to code subsequent hCG tests the right way so that doesn't happen again. I'm sure that's what's happening with you. It's just how they are coding things.