The American Medical Association issued a new Current Procedural Terminology (CPT) code for influenza vaccine Flucelvax, CPT 90674, effective August 1, 2016 for Medicare claims. However, Medicare claims processing systems will not be able to accept the new code until January 1, 2017. Until this time, you may hold claims containing CPT 90674. Alternatively, Medicare Administrative Contractors (MACs) may direct use of a Not Other Classified (NOC) code to allow billing for the vaccine for dates of service on or after August 1, 2016, and before January 1, 2017. Check with your MAC for this information and other interim billing instructions. Finally, if you bill institutional claims, note that code CPT 90674 will be implemented on February 20, 2017.