Every medical practice deal with claims denials, which is a notice that the claim has not been paid for specific reason. While there are many different denial codes you may see from time to time, one of the most common denial codes is the denial for a duplicate claim or service. Unfortunately, duplicate claims are both counter-productive and costly for your practice, not to mention, they can end up getting you into trouble. Too many errors can result in the imposition of program integrity actions by the Medicare administrative contractor against your practice. This means it’s essential to learn more about this common denial code, how to avoid it, and what you can do when it does happen.