I have a claim that is denying from Medicare, our doctor billed a 99213 with dx Z32.01, O99.214, Z3A.36 and Z34.03. According to the progress note this is the patient's first visit to an OB and she 37 weeks. I am very new to OB coding (like this is my first ever OB claim). Can anyone give me insight on how to handle this issue? Thanks so much for any help!