You have just started as a coder in a hospital outpatient department. It is your dream job; one you have been working on achieving for some time. You've studied hard and received great grades. In your first few months, your coding work has been reviewed by a supervisor who then goes over with you any changes required. You start to notice a pattern where your supervisor keeps changing the codes you have noted and you know that some of your work really was correct. You know you are still learning so you stay silent and decide to learn as much as you can, especially if you have really made these errors. After a while, your confidence grows and you believe that the codes are being changed by your supervisor in error, and furthermore, perhaps to obtain more money, as that often is the case. What should you do