When your gastroenterologist places a naso-gastric tube during an EGD procedure, you will have to report this procedure with 43241 (Upper gastrointestinal endoscopy including esophagus, stomach, and either the duodenum and/or jejunum as appropriate; with transendoscopic intraluminal tube or catheter placement). Many coders are confused about using 43241 for placement of a naso-gastric tube, as the insertion of the tube occurs through the nose. However, the EGD procedure your gastroenterologist conducts along with the tube placement is an aid to position the tube in the stomach. So, even though the placement of the tube occurs through the nose, you need to report 43241, as your gastroenterologist performed the EGD for the correct placement of the tube.
As far I see, you have done the correct coding.But check there is a possibility that “Medicare has reduced payment for this service because part of this service was paid on another claim. You are not responsible for the amount above the approved amount." If this is not the case,you should re appeal the case with codes.