2007 ICD-9-CM Procedure 05.21 Sphenopalatine ganglionectomy 05.21 is a specific code that can be used to specify a procedure 05.21 contains 2 index entries View the full Volume 3 05.* hierarchy Index entries containing 05.21: Ganglionectomy sphenopalatine (Meckel's) 05.21 Vidianectomy 05.21