2007 ICD-9-CM Procedure 49.02 Other incision of perianal tissue 49.02 is a specific code that can be used to specify a procedure 49.02 contains 4 index entries View the full Volume 3 49.* hierarchy 49.02 also known as: Undercutting of perianal tissue 49.02 excludes: anal fistulotomy (49.11) Index entries containing 49.02: Incision (and drainage) ischiorectal tissue 49.02 abscess 49.01 perianal (skin) (tissue) 49.02 abscess 49.01 Operation Ball undercutting 49.02 Undercutting perianal tissue 49.02