| Code | Description |
| C18.2 | Malignant neoplasm of ascending colon |
| C18.4 | Malignant neoplasm of transverse colon |
| C18.6 | Malignant neoplasm of descending colon |
| C18.7 | Malignant neoplasm of sigmoid colon |
| C18.8 | Malignant neoplasm of overlapping sites of colon |
| C18.9 | Malignant neoplasm of colon, unspecified |
| C7A.022 | Malignant carcinoid tumor of the ascending colon |
| C7A.023 | Malignant carcinoid tumor of the transverse colon |
| C7A.024 | Malignant carcinoid tumor of the descending colon |
| C7A.025 | Malignant carcinoid tumor of the sigmoid colon |
| D01.0 | Carcinoma in situ of colon |
| D12.2 | Benign neoplasm of ascending colon |
| D12.3 | Benign neoplasm of transverse colon |
| D12.4 | Benign neoplasm of descending colon |
| D12.5 | Benign neoplasm of sigmoid colon |
| D12.6 | Benign neoplasm of colon, unspecified |
| D37.4 | Neoplasm of uncertain behavior of colon |
| D3A.022 | Benign carcinoid tumor of the ascending colon |
| D3A.023 | Benign carcinoid tumor of the transverse colon |
| D3A.024 | Benign carcinoid tumor of the descending colon |
| D3A.025 | Benign carcinoid tumor of the sigmoid colon |
| K51.40 | Inflammatory polyps of colon without complications |
| K51.411 | Inflammatory polyps of colon with rectal bleeding |
| K51.412 | Inflammatory polyps of colon with intestinal obstruction |
| K51.413 | Inflammatory polyps of colon with fistula |
| K51.414 | Inflammatory polyps of colon with abscess |
| K51.418 | Inflammatory polyps of colon with other complication |
| K51.419 | Inflammatory polyps of colon with unspecified complications |
| K55.20 | Angiodysplasia of colon without hemorrhage |
| K55.21 | Angiodysplasia of colon with hemorrhage |
| K63.5 | Polyp of colon |
| Q43.2 | Other congenital functional disorders of colon |
| S36.500A | Unspecified injury of ascending [right] colon, initial encounter |
| S36.500D | Unspecified injury of ascending [right] colon, subsequent encounter |
| S36.500S | Unspecified injury of ascending [right] colon, sequela |
| S36.501A | Unspecified injury of transverse colon, initial encounter |
| S36.501D | Unspecified injury of transverse colon, subsequent encounter |
| S36.501S | Unspecified injury of transverse colon, sequela |
| S36.502A | Unspecified injury of descending [left] colon, initial encounter |
| S36.502D | Unspecified injury of descending [left] colon, subsequent encounter |
| S36.502S | Unspecified injury of descending [left] colon, sequela |
| S36.503A | Unspecified injury of sigmoid colon, initial encounter |
| S36.503D | Unspecified injury of sigmoid colon, subsequent encounter |
| S36.503S | Unspecified injury of sigmoid colon, sequela |
| S36.508A | Unspecified injury of other part of colon, initial encounter |
| S36.508D | Unspecified injury of other part of colon, subsequent encounter |
| S36.508S | Unspecified injury of other part of colon, sequela |
| S36.509A | Unspecified injury of unspecified part of colon, initial encounter |
| S36.509D | Unspecified injury of unspecified part of colon, subsequent encounter |
| S36.509S | Unspecified injury of unspecified part of colon, sequela |
| S36.510A | Primary blast injury of ascending [right] colon, initial encounter |
| S36.510D | Primary blast injury of ascending [right] colon, subsequent encounter |
| S36.510S | Primary blast injury of ascending [right] colon, sequela |
| S36.511A | Primary blast injury of transverse colon, initial encounter |
| S36.511D | Primary blast injury of transverse colon, subsequent encounter |
| S36.511S | Primary blast injury of transverse colon, sequela |
| S36.512A | Primary blast injury of descending [left] colon, initial encounter |
| S36.512D | Primary blast injury of descending [left] colon, subsequent encounter |
| S36.512S | Primary blast injury of descending [left] colon, sequela |
| S36.513A | Primary blast injury of sigmoid colon, initial encounter |
| S36.513D | Primary blast injury of sigmoid colon, subsequent encounter |
| S36.513S | Primary blast injury of sigmoid colon, sequela |
| S36.518A | Primary blast injury of other part of colon, initial encounter |
| S36.518D | Primary blast injury of other part of colon, subsequent encounter |
| S36.518S | Primary blast injury of other part of colon, sequela |
| S36.519A | Primary blast injury of unspecified part of colon, initial encounter |
| S36.519D | Primary blast injury of unspecified part of colon, subsequent encounter |
| S36.519S | Primary blast injury of unspecified part of colon, sequela |
| S36.520A | Contusion of ascending [right] colon, initial encounter |
| S36.520D | Contusion of ascending [right] colon, subsequent encounter |
| S36.520S | Contusion of ascending [right] colon, sequela |
| S36.521A | Contusion of transverse colon, initial encounter |
| S36.521D | Contusion of transverse colon, subsequent encounter |
| S36.521S | Contusion of transverse colon, sequela |
| S36.522A | Contusion of descending [left] colon, initial encounter |
| S36.522D | Contusion of descending [left] colon, subsequent encounter |
| S36.522S | Contusion of descending [left] colon, sequela |
| S36.523A | Contusion of sigmoid colon, initial encounter |
| S36.523D | Contusion of sigmoid colon, subsequent encounter |
| S36.523S | Contusion of sigmoid colon, sequela |
| S36.528A | Contusion of other part of colon, initial encounter |
| S36.528D | Contusion of other part of colon, subsequent encounter |
| S36.528S | Contusion of other part of colon, sequela |
| S36.529A | Contusion of unspecified part of colon, initial encounter |
| S36.529D | Contusion of unspecified part of colon, subsequent encounter |
| S36.529S | Contusion of unspecified part of colon, sequela |
| S36.530A | Laceration of ascending [right] colon, initial encounter |
| S36.530D | Laceration of ascending [right] colon, subsequent encounter |
| S36.530S | Laceration of ascending [right] colon, sequela |
| S36.531A | Laceration of transverse colon, initial encounter |
| S36.531D | Laceration of transverse colon, subsequent encounter |
| S36.531S | Laceration of transverse colon, sequela |
| S36.532A | Laceration of descending [left] colon, initial encounter |
| S36.532D | Laceration of descending [left] colon, subsequent encounter |
| S36.532S | Laceration of descending [left] colon, sequela |
| S36.533A | Laceration of sigmoid colon, initial encounter |
| S36.533D | Laceration of sigmoid colon, subsequent encounter |
| S36.533S | Laceration of sigmoid colon, sequela |
| S36.538A | Laceration of other part of colon, initial encounter |
| S36.538D | Laceration of other part of colon, subsequent encounter |
| S36.538S | Laceration of other part of colon, sequela |
| S36.539A | Laceration of unspecified part of colon, initial encounter |
| S36.539D | Laceration of unspecified part of colon, subsequent encounter |
| S36.539S | Laceration of unspecified part of colon, sequela |
| S36.590A | Other injury of ascending [right] colon, initial encounter |
| S36.590D | Other injury of ascending [right] colon, subsequent encounter |
| S36.590S | Other injury of ascending [right] colon, sequela |
| S36.591A | Other injury of transverse colon, initial encounter |
| S36.591D | Other injury of transverse colon, subsequent encounter |
| S36.591S | Other injury of transverse colon, sequela |
| S36.592A | Other injury of descending [left] colon, initial encounter |
| S36.592D | Other injury of descending [left] colon, subsequent encounter |
| S36.592S | Other injury of descending [left] colon, sequela |
| S36.593A | Other injury of sigmoid colon, initial encounter |
| S36.593D | Other injury of sigmoid colon, subsequent encounter |
| S36.593S | Other injury of sigmoid colon, sequela |
| S36.598A | Other injury of other part of colon, initial encounter |
| S36.598D | Other injury of other part of colon, subsequent encounter |
| S36.598S | Other injury of other part of colon, sequela |
| S36.599A | Other injury of unspecified part of colon, initial encounter |
| S36.599D | Other injury of unspecified part of colon, subsequent encounter |
| S36.599S | Other injury of unspecified part of colon, sequela |
| T18.4XXA | Foreign body in colon, initial encounter |
| T18.4XXD | Foreign body in colon, subsequent encounter |
| T18.4XXS | Foreign body in colon, sequela |
| Z12.11 | Encounter for screening for malignant neoplasm of colon |