Explanation of the diagnose and procedure codes used in the article
| ICD-10 codes | C15-C26 | Malignant neoplasms of digestive organs |
| C15 | Malignant neoplasm of oesophagus | |
| C16 | Malignant neoplasm of stomach | |
| C17 | Malignant neoplasm of small intestine | |
| C18 | Malignant neoplasm of colon | |
| C19 | Malignant neoplasm of rectosigmoid junction | |
| C20 | Malignant neoplasm of rectum | |
| C21 | Malignant neoplasm of anus and anal canal | |
| C22 | Malignant neoplasm of liver and intrahepatic bile ducts | |
| C23 | Malignant neoplasm of gall bladder | |
| C24 | Malignant neoplasm of other and unspecified parts of biliary tract | |
| C25 | Malignant neoplasm of pancreas | |
| C26 | Malignant neoplasm of other ill-defined digestive organs | |
| D12 | Benign neoplasm of colon, rectum, anus and anal canal | |
| K00-K93 | Diseases of the digestive system | |
| K00-K14 | Diseases of oral cavity, salivary glands and jaws | |
| K20-K31 | Diseases of oesophagus, stomach and duodenum | |
| K35-K38 | Diseases of appendix | |
| K40-K46 | Hernia | |
| K50-K52 | Non-infective enteritis and colitis | |
| K55-K63 | Other diseases of intestines | |
| K65-K67 | Diseases of peritoneum | |
| K70-K77 | Diseases of liver | |
| K80-K87 | Disorders of gallbladder, biliary tract and pancreas | |
| K90-K93 | Other diseases of the digestive system | |
| National procedure codes* | UJF32 | Colonoscopy |
| UJF34 | Left colonoscopy | |
| UJF45 | Flexible sigmoidoscopy with biopsy |
*Based on the Nordic Classification of Surgical Procedures.