A patient calls in, upset about their bill. They say they've been billed twice for the X-ray that they received last month. You review the patient's chart and see that they have indeed been charged the same code twice, one with TC and one with 26 modifiers. Why is this?

The American Academy of Professional Coders (AAPC) provides training and credentialling for medical billers across the United States. After passing the AAPC medical billing exam, a medical biller earns the Certified Professinal Biller (CPB) credential. The medical billing exam has 200 multiple choice questions and five hours and forty minutes is given to complete the exam.