2007 ICD-9-CM Procedure 57.91 Sphincterotomy of bladder 57.91 is a specific code that can be used to specify a procedure 57.91 contains 3 index entries View the full Volume 3 57.* hierarchy 57.91 also known as: Division of bladder neck Index entries containing 57.91: Division bladder neck 57.91 Incision (and drainage) bladder 57.19 neck (transurethral) 57.91 Sphincterotomy bladder (neck) (transurethral) 57.91