Cancer Grouping and ICD-10 Coding
The site of cancer on this website is primarily based on the 10th revision of the International Statistical Classification of Diseases (ICD-10). As the earlier data were coded to the 9th revision (ICD-9), it was not possible to convert them to ICD-10 directly. Some ICD-9 data for 1983 to 2000 have been adjusted to be comparable with ICD-10 data for 2001 onwards.
With increasing emphases on unifying the cancer grouping and terminology, the Registry has recently revised a new cancer grouping with the collaboration of the Government Department of Health. The purpose of the table is to group sites that are treated as a single site/group when disseminating cancer statistics to the public in most circumstances. On the other hand, certain tumors appearing within a defined group are not uncommon. For this reason, subcategory has been reserved for these situations.
| ICD-10 | Cancer site/group |
| Lip, oral cavity and pharynx | |
| C00-C14 except C11 | Lip, oral cavity and pharynx except nasopharynx |
| C00 | Lip, vermilion |
| C01-C02 | Tongue |
| C03-C06 | Oral cavity |
| C07-C08 | Salivary glands |
| C09-C10 | Tonsil, oropharynx |
| C12-C13 | Hypopharynx |
| C14 | Pharynx, other and ill-defined sites |
| C11 | Nasopharynx |
| Digestive organs | |
| C15 | Oesophagus |
| C16 | Stomach |
| C17 | Small intestine |
| C18-C21 | Colorectum |
| C18 | Colon |
| C19-C21 | Rectum/anus |
| C22 | Liver |
| C23-C24 | Gallbladder and extrahepatic bile duct |
| C25 | Pancreas |
| Respiratory system | |
| C32 | Larynx |
| C33-C34 | Lung |
| Not other specified | |
| C30-C31 | Nasal cavity, middle ear and accessory sinuses |
| C37-C38 | Thymus/other thoracic organs |
| Bone, skin and soft tissue | |
| C40-C41, C47, C49 | Bone and soft tissue |
| C40-C41 | Bone and cartilage |
| C47, C49 | Connective and soft tissue |
| C43 | Melanoma of skin |
| C44 | Non-melanoma skin |
| C45 | Mesothelioma |
| Not other specified | |
| C46 | Kaposi sarcoma |
| Breast and genital organs | |
| C50 | Breast |
| C53 | Cervix |
| C54 | Corpus uteri |
| C56, C57.0-4 | Ovary and other uterine adnexa |
| C61 | Prostate |
| C62 | Testis |
| Not other specified | |
| C51-C52, C57.7-9 | Vagina, vulva and other female genital |
| C55 | Uterus, unspecified |
| C58 | Placenta |
| C60, C63 | Penis/other male genital |
| Urinary organs | |
| C67 | Bladder |
| C64-C66, C68 | Kidney and other urinary organs except bladder |
| Eye, brain and central nervous system, endocrine glands | |
| C70-C72 | Brain and nervous system |
| C73 | Thyroid |
| Not other specified | |
| C69 | Eye |
| C74-C75 | Other endocrine |
| Lymphatic and hematopoietic tissue | |
| C81 | Hodgkin's lymphoma |
| C82-C85 | Non-Hodgkin's lymphoma |
| C90 | Multiple Myeloma |
| C91-C95 | Leukaemia |
| C91 | Lymphoid leukaemia |
| C92 | Myeloid leukaemia |
| C93 | Monocytic leukaemia |
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| C00-C97 except C44 | All sites except non-melanoma skin |
| C00-C97 | All sites |