Lon, have your provider check the coding and resubmit. My friend had the same problem but he was seeing a NP who was doing the coding also and didn't what the hell he was doing. I got concerned a few weeks ago when my doctor was doing so much lab work and my renal specialists was too. I asked the PCP about it and he said with the proper coding there was no reason Medicare would not pay for it. They paid without a problem. Coding specialists are in great demand and some places try to cut corners and do it themselves. A good coding specialist that keeps up with their CE requirements can make a really good living. I know one that works at home for a hospital and they do everything they can to keep her. BTY, my friends claims were resubmitted after I told him about the coding and they were paid without a problem with Medicare. I have never paid for lab work and I don't have a supplement.