I think the 3D/4d are covered by medicare but only to the same extent a 2D one is - so your out-of-pocket costs are more because the 3D/4D scans cost more. I agree that about $80 back sounds right, but I know once we hit the medicare safety net, we got a fair bit more $$ back on the 4D scans. I'm pretty sure some of our scans were around $250 - give or take $20/$30. FWIW our 4D scans were fabulous (but not cheap till we hit the medicare threshold).