Revenue code 519 is present and the beneficiary is not enrolled in a Medicare advantage plan under option code 'A', 'B', OR 'C'.
Avoiding/Correcting This Error
Review your beneficiary’s enrollment in a Medicare HMO/MAO prior to providing services. A beneficiary may drop MAO coverage; review the CWF, IVR, NGSConnex, or HETS to identify a termination date for the MAO plan.