| D3A.020 | Benign carcinoid tumor of the appendix | BILLABLE CODE |
| D3A.021 | Benign carcinoid tumor of the cecum | BILLABLE CODE |
| D3A.022 | Benign carcinoid tumor of the ascending colon | BILLABLE CODE |
| D3A.023 | Benign carcinoid tumor of the transverse colon | BILLABLE CODE |
| D3A.024 | Benign carcinoid tumor of the descending colon | BILLABLE CODE |
| D3A.025 | Benign carcinoid tumor of the sigmoid colon | BILLABLE CODE |
| D3A.026 | Benign carcinoid tumor of the rectum | BILLABLE CODE |
| D3A.029 | Benign carcinoid tumor of the large intestine, unspecified portion | BILLABLE CODE |
