| D01.0 | Carcinoma in situ of colon | BILLABLE CODE |
| D01.1 | Carcinoma in situ of rectosigmoid junction | BILLABLE CODE |
| D01.2 | Carcinoma in situ of rectum | BILLABLE CODE |
| D01.3 | Carcinoma in situ of anus and anal canal | BILLABLE CODE |
| D01.4 | Carcinoma in situ of other and unspecified parts of intestine | NON-BILLABLE CODE |
| D01.40 | Carcinoma in situ of unspecified part of intestine | BILLABLE CODE |
| D01.49 | Carcinoma in situ of other parts of intestine | BILLABLE CODE |
| D01.5 | Carcinoma in situ of liver, gallbladder and bile ducts | BILLABLE CODE |
| D01.7 | Carcinoma in situ of other specified digestive organs | BILLABLE CODE |
| D01.9 | Carcinoma in situ of digestive organ, unspecified | BILLABLE CODE |
