I have recently took over billing at the Dr. office I work for. We do nasal scopes with a flex scope. We mainly do the scopes to check the sinus area out but he will go and see the larynx as well. Do I code a 92511 for nasopharyngoscopy, or 31231 for nasal endoscope, or 31575 laryngoscopy? I am confused on this one. I know reimbursement is higher for nasal enoscopy. I also know the purpose of the procedure is to make sure sinus is draining properly and no issues in any of the sinus area.

Thank you