D&C procedures are performed with anesthesia, for most of the time. General, spinal or a local anesthetic is used based on patient's medical condition and willingness. performing curettage of uterus and cervix without any anesthesia may cause discomfort and pain to the patient. But as your doctor has performed the Px w/o anesthesia and in the doc's office only, we may assume that it was done because of emergent situation. As per the choice of code is concerned, I second Alex, except 58120. It's an obstetric case only and so 58120 is not a code of choice here. You may require to submit the OP notes along with the claim to prove that the case was urgent and of utmost medical necessity.