2007 ICD-9-CM Procedure 29.31 Cricopharyngeal myotomy 29.31 is a specific code that can be used to specify a procedure 29.31 contains 1 index entry View the full Volume 3 29.* hierarchy 29.31 excludes: that with pharyngeal diverticulectomy (29.32) Index entries containing 29.31: Myotomy 83.02 cricopharyngeal 29.31 that for pharyngeal (pharyngoesophageal) diverticulectomy 29.32