What surgical CPT code is used for a CT guided percutaneous bladder wall biopsy? I read that 49180 could be an option but we aren't sure there is a "mass." "PET scan revealed thickening of the bladder wall antral laterally concerning for residual malignancy and moderate hydronephrosis without evidence of metastatic disease" is all I have to go by since the procedure has not yet been done. Any thoughts? Thank you!