2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Benign Neoplasms 210-229 > 2006 ICD-9-CM Diagnosis 211 Benign neoplasm of other parts of digestive system View the most recent version of ICD-9-CM 211 Benign neoplasms of the gastrointestinal tract, which includes the oral cavity, pharynx, esophagus, stomach, intestines, rectus and anus and other structures involved with digestion. 211 is a non-specific code that cannot be used to specify a diagnosis