| D120 | Benign neoplasm of cecum |
| D121 | Benign neoplasm of appendix |
| D122 | Benign neoplasm of ascending colon |
| D123 | Benign neoplasm of transverse colon |
| D124 | Benign neoplasm of descending colon |
| D125 | Benign neoplasm of sigmoid colon |
| D126 | Benign neoplasm of colon, unspecified |
| D127 | Benign neoplasm of rectosigmoid junction |
| D128 | Benign neoplasm of rectum |
| D129 | Benign neoplasm of anus and anal canal |
| D13 | Benign neoplasm of and ill-defined parts of digestive system Benign neoplasm of other and ill-defined parts of digestive system |
| D130 | Benign neoplasm of esophagus |
| D131 | Benign neoplasm of stomach |
| D132 | Benign neoplasm of duodenum |
| D133 | Benign neoplasm of other and unspecified parts of small intestine |
| D1330 | Benign neoplasm of unspecified part of small intestine |
| D1339 | Benign neoplasm of other parts of small intestine |
| D134 | Benign neoplasm of liver |
| D135 | Benign neoplasm of extrahepatic bile ducts |
| D136 | Benign neoplasm of pancreas |
| D137 | Benign neoplasm of endocrine pancreas |
| D139 | Benign neoplasm of ill-defined sites within the digestive system |
| D1391 | Familial adenomatous polyposis |
| D1399 | Benign neoplasm of ill-defined sites within the digestive system |
| D14 | Benign neoplasm of middle ear and respiratory system |
| D140 | Benign neoplasm of middle ear, nasal cavity and accessory sinuses |
| D141 | Benign neoplasm of larynx |
| D142 | Benign neoplasm of trachea |
| D143 | Benign neoplasm of bronchus and lung |
| D1430 | Benign neoplasm of unspecified bronchus and lung |
| D1431 | Benign neoplasm of right bronchus and lung |
| D1432 | Benign neoplasm of left bronchus and lung |
| D144 | Benign neoplasm of respiratory system, unspecified |
| D15 | Benign neoplasm of other and unspecified intrathoracic organs |
| D150 | Benign neoplasm of thymus |
| D151 | Benign neoplasm of heart |
| D152 | Benign neoplasm of mediastinum |
| D157 | Benign neoplasm of other specified intrathoracic organs |
| D159 | Benign neoplasm of intrathoracic organ, unspecified |
| D16 | Benign neoplasm of bone and articular cartilage |
| D160 | Benign neoplasm of scapula and long bones of upper limb |
| D1600 | Benign neoplasm of scapula and long bones of unsp upper limb Benign neoplasm of scapula and long bones of unspecified upper limb |
| D1601 | Benign neoplasm of scapula and long bones of right upper limb |
| D1602 | Benign neoplasm of scapula and long bones of left upper limb Benign neoplasm of scapula and long bones of left upper limb |
| D161 | Benign neoplasm of short bones of upper limb |
| D1610 | Benign neoplasm of short bones of unspecified upper limb |
| D1611 | Benign neoplasm of short bones of right upper limb |
| D1612 | Benign neoplasm of short bones of left upper limb |
| D162 | Benign neoplasm of long bones of lower limb |
| D1620 | Benign neoplasm of long bones of unspecified lower limb |