2007 ICD-9-CM Procedure 49.11 Anal fistulotomy 49.11 is a specific code that can be used to specify a procedure 49.11 contains 3 index entries View the full Volume 3 49.* hierarchy Index entries containing 49.11: Fistulotomy, anal 49.11 Incision (and drainage) anus NEC 49.93 fistula 49.11 fistula, anal 49.11