Tumor sites are classified according to the International Classification of Diseases for Oncology, ICD-O 3rd Edition, World Health Organization, Geneva, 2000.
| Topo_code | Topography | Short_topo |
|---|---|---|
| C00 | LIP (excludes Skin of lip ) | LIP |
| C00-C14 | HEAD&NECK, NOS | HEAD&NECK, NOS |
| C01 | BASE OF TONGUE | TONGUE (base) |
| C02 | OTHER AND UNSPECIFIED PARTS OF TONGUE | TONGUE (other) |
| C03 | GUM | GUM |
| C04 | FLOOR OF MOUTH | MOUTH (floor) |
| C05 | PALATE | PALATE |
| C06 | OTHER AND UNSPECIFIED PARTS OF MOUTH | MOUTH (other) |
| C07 | PAROTID GLAND | PAROTID GLAND |
| C08 | OTHER AND UNSPECIFIED MAJOR SALIVARY GLANDS | SALIVARY GLAND |
| C09 | TONSIL | TONSIL |
| C10 | OROPHARYNX | OROPHARYNX |
| C11 | NASOPHARYNX | NASOPHARYNX |
| C12 | PYRIFORM SINUS | PYRIFORM SINUS |
| C13 | HYPOPHARYNX | HYPOPHARYNX |
| C14 | OTHER AND ILL-DEFINED SITES IN LIP, ORAL CAVITY AND PHARYNX | OTHER HEAD&NECK |
| C15 | ESOPHAGUS | ESOPHAGUS |
| C15-C26 | DIGESTIVE ORGANS, NOS | DIGESTIVE ORGANS, NOS |
| C16 | STOMACH | STOMACH |
| C17 | SMALL INTESTINE | SMALL INTESTINE |
| C18 | COLON | COLON |
| C18-C20 | COLORECTUM, NOS | COLORECTUM, NOS |
| C19 | RECTOSIGMOID JUNCTION | RECTOSIGM. JUNCT. |
| C20 | RECTUM | RECTUM |
| C21 | ANUS AND ANAL CANAL | ANUS |
| C22 | LIVER AND INTRAHEPATIC BILE DUCTS | LIVER |
| C23 | GALLBLADDER | GALLBLADDER |
| C24 | OTHER AND UNSPECIFIED PARTS OF BILIARY TRACT | BILIARY TRACT |
| C25 | PANCREAS | PANCREAS |
| C26 | OTHER AND ILL-DEFINED DIGESTIVE ORGANS | OTHER DIGESTIVE ORG. |
| C30 | NASAL CAVITY AND MIDDLE EAR | NASAL CAVITY |
| C30-C39 | RESPIRATORY SYSTEM AND INTRATHORACIC ORGANS, NOS | RESPIRATORY SYSTEM, NOS |
| C31 | ACCESSORY SINUSES | SINUSES |
| C32 | LARYNX | LARYNX |
| C33 | TRACHEA | TRACHEA |
| C34 | BRONCHUS AND LUNG | LUNG |
| C37 | THYMUS | THYMUS |
| C38 | HEART, MEDIASTINUM, AND PLEURA | HEART/MED/PLEURA |
| C39 | OTHER AND ILL-DEFINED SITES WITHIN RESPIRATORY SYSTEM AND INTRATHORACIC ORGANS | OTHER RESPIR. SYST. |
| C40 | BONES, JOINTS AND ARTICULAR CARTILAGE OF LIMBS | BONES (limbs) |
| C41 | BONES, JOINTS AND ARTICULAR CARTILAGE OF OTHER AND UNSPECIFIED SITES | BONES (other) |
| C42 | HEMATOPOIETIC AND RETICULOENDOTHELIAL SYSTEMS | HEMATOP. SYSTEM |
| C44 | SKIN (excludes Skin of vulva, Skin of penis, Skin of scrotum ) | SKIN |
| C47 | PERIPHERAL NERVES AND AUTONOMIC NERVOUS SYSTEM | NERVES |
| C48 | RETROPERITONEUM AND PERITONEUM | PERITONEUM |
| C49 | CONNECTIVE, SUBCUTANEOUS AND OTHER SOFT TISSUES | SOFT TISSUES |
| C50 | BREAST | BREAST |
| C51 | VULVA | VULVA |
| C51-C58 | FEMALE GENITAL ORGANS, NOS | FEMALE GENITAL ORG., NOS |
| C52 | VAGINA | VAGINA |
| C53 | CERVIX UTERI | CERVIX UTERI |
| C54 | CORPUS UTERI | CORPUS UTERI |
| C55 | UTERUS, NOS | UTERUS |
| C56 | OVARY | OVARY |
| C57 | OTHER AND UNSPECIFIED FEMALE GENITAL ORGANS | OTHER FEMALE GEN. ORG. |
| C58 | PLACENTA | PLACENTA |
| C60 | PENIS | PENIS |
| C60-C63 | MALE GENITAL ORGANS, NOS | MALE GENITAL ORG., NOS |
| C61 | PROSTATE GLAND | PROSTATE |
| C62 | TESTIS | TESTIS |
| C63 | OTHER AND UNSPECIFIED MALE GENITAL ORGANS | OTHER MALE GEN. ORG. |
| C64 | KIDNEY | KIDNEY |
| C64-C68 | URINARY TRACT, NOS | URINARY TRACT, NOS |
| C65 | RENAL PELVIS | RENAL PELVIS |
| C66 | URETER | URETER |
| C67 | BLADDER | BLADDER |
| C68 | OTHER AND UNSPECIFIED URINARY ORGANS | OTHER URINARY ORG. |
| C69 | EYE AND ADNEXA | EYE AND ADNEXA |
| C70 | MENINGES | MENINGES |
| C71 | BRAIN | BRAIN |
| C72 | SPINAL CORD, CRANIAL NERVES, AND OTHER PARTS OF CENTRAL NERVOUS SYSTEM | SPINAL CORD |
| C73 | THYROID GLAND | THYROID |
| C73-C75 | THYROID AND OTHER ENDOCRINE GLANDS, NOS | ENDOCRINE GLANDS, NOS |
| C74 | ADRENAL GLAND | ADRENAL GLAND |
| C75 | OTHER ENDOCRINE GLANDS AND RELATED STRUCTURES | OTHER ENDOCRINE Gl. |
| C76 | OTHER AND ILL-DEFINED SITES | OTHER SITES |
| C77 | LYMPH NODES | LYMPH NODES |
| C80 | UNKNOWN PRIMARY SITE | UNKNOWN SITE |