Hi, Annie:This is an interesting case. A quick check of CPT/HCPCS Coding Clinic and other sites didn't reveal anything.You're right -- 57200 is for suture of vaginal injury and this wound was not sutured, so I would not use that.I did find where 12041 is a repair of a complex wound includes genitalia with no distinction between internal or external, but it doesn't sound like this was a complex wound. CPT chapter notes call chemical "cautery" a simple repair. I don't know if appending a 52 Modifier for reduced services would work here.The 17106-110 codes are for DESTRUCTION of LESIONS.There are no lesions in this case. Further, there is a specific note saying we CANNOT use related 17250 to report chem cauterization for hemostasis.This might be an actual case of an Unlisted procedure, Female Genital System, 58999, and send along detailed notes.Let us know what code you finally use!