We are a Federally Qualified Health Center and we bill Medicare Part A for our office visits in a UB04 format and all xrays, labs and inpatient hospital visits we bill Medicare Part B FFS. My question is, I have a charge for a G0402 (Welcome to Medicare Preventative Visit) and a G0403 ECG for IPPE, can those both be billed to Part A or should the ECG be billed to Medicare Part B FFS?