2007 ICD-9-CM Procedure 18.02 Incision of external auditory canal 18.02 is a specific code that can be used to specify a procedure 18.02 contains 4 index entries View the full Volume 3 18.* hierarchy Index entries containing 18.02: Exploration -- see also Incision auditory canal, external 18.02 Incision (and drainage) auditory canal or meatus, external 18.02 Removal -- see also Excision foreign body NEC -- see also Incision, by site 98.20 auditory canal, external 18.02 Unroofing -- see also Incision, by site external auditory canal 18.02