Answer: This is more common than one might think. The problem, as you've described it, could possibly lie in the way the doctor coded the claim when they originally submitted it to the insurance carrier. To correct this you will need to find out the date of service and then go back to your doctor to ask them to resubmit the claim under the correct coding. You will also need to get a copy of your medical record related to the claim itself as well as a letter from your doctor stating that you have never been treated for elevated cholesterol. This is no easy task, however as not many doctor's offices are willing to go through this process for a patient. To save yourself the time and frustration I would make an application to an alternative insurance carrier.