What is the correct code to use for taking biopsies of a cardiac tumor when the planned procedure was a repair of right ventricular outflow tract obstruction. Once the chest was opened, an external cardiac mass was discovered and biopsied. I can’t use 93505 because this was an open procedure and we didn’t biopsy the cardiac muscle. Is 33130 appropriate since portions of the tumor were removed or should I use unlisted code 39499?