2007 ICD-9-CM Procedure 49.59 Other anal sphincterotomy 49.59 is a specific code that can be used to specify a procedure 49.59 contains 3 index entries View the full Volume 3 49.* hierarchy 49.59 also known as: Division of sphincter NOS Index entries containing 49.59: Division sphincter anal (external) (internal) 49.59 left lateral 49.51 posterior 49.52 Pectenotomy -- see also Sphincterotomy, anal 49.59 Sphincterotomy anal (external) (internal) 49.59 left lateral 49.51 posterior 49.52