Here’s an all too familiar scene. The senior partner in a group attends a weekend conference in Bermuda and afterwards storms into the manager’s office. Slapping the handouts on to the desk, she says, accusingly, “There are a lot of things we could be billing for that we’re not. You’re leaving a lot of money on the table.” Hasn’t happened? How about this one. A newly credentialed coder passes the manager in the hallway. After pleasantries, she says, “By the way, I just want to tell you that we’re billing something completely wrong. We should stop right away and refund all of that money.” Either scene sends chills up and down the manager’s spine. How does the manager sort out fact from fiction, certainty from opinion? Physician practice managers are responsible for ensuring maximum revenue generation with absolute compliance. It is a tall order. A first step is to understand not just the codes, but the source of coding rules and reimbursement policies that govern physician coding.