Filing a medical claim. CPT 21040 ICD-9 526.0, the doctor grafted the defect using code 21215. I am not sure what modifier to use, he also did this procedure under IV anesthesia 3 units of 00190.

This procedure does not require a modifier as the 21040 (excision of benign tumor or cyst of mandible, by enucleation and/or currettage) and 21215 (Graft, bone, mandible/including obtaining graft) are seperate procedures. You may append modifier 51 however it is not necessary in this instance.