We follow NCCI for Medicare, Tricare and Medicaid. When billing commercial payers, do we have to follow NCCI edits or CMS guidelines? Virginia Subscriber Because payers do not use the same claim edits, some coders prefer to code per insurer These practices either employ large billing staff who can focus on various regulations or are small and handle a low volume allowing this specificity. If the edits contradict specialty-society guidelines, you should work with the society, such as the American Thoracic Society or the American College of Chest Physicians, and the payer to alert them to the inappropriate edit. Before reporting two bundled codes, make sure documentation justifies billing them separately.