We are doing mammograms in our office now and I had a questions regarding diagnostic 3D mammograms. Someone stated to our Mammo manager that we should not be billing a call back diagnostic 3D mammogram if we already performed a 3D screening mammogram. I have been billing 2D & 3D diagnostic mammograms after a 3D screening was performed and all the insurance companies have been paying for them. Is anyone aware of this being incorrect?