2007 ICD-9-CM Procedure 27.53 Closure of fistula of mouth 27.53 is a specific code that can be used to specify a procedure 27.53 contains 2 index entries View the full Volume 3 27.* hierarchy 27.53 excludes: fistulectomy: nasolabial (21.82) oro-antral (22.71) oronasal (21.82) Index entries containing 27.53: Closure -- see also Repair fistula mouth (external) 27.53 Fistulectomy -- see also Closure, fistula, by site mouth NEC 27.53