Table of Neoplasms — O
Find the anatomical site, then read across to the column matching the behaviour the pathology report describes. One site yields six different codes depending on whether the neoplasm is malignant, in situ, benign, or of uncertain behaviour. 87 sites beginning with O.
A blank cell means the column does not apply to that site — not that the code is missing.
| Site | Malignant primary | Malignant secondary | Ca in situ | Benign | Uncertain behaviour | Unspecified behaviour |
|---|---|---|---|---|---|---|
| organNeoplasm, neoplastic › abdomen, abdominal | C76.2 | C79.8- | D09.8 | D36.7 | D48.7 | D49.89 |
| overlapping lesion with rectosigmoid junction or rectumNeoplasm, neoplastic › anus, anal | C21.8 | — | — | — | — | — |
| openingNeoplasm, neoplastic › auditory › tube | C11.2 | C79.89 | D00.08 | D10.6 | D37.05 | D49.0 |
| orificeNeoplasm, neoplastic › bladder(urinary) | C67.9 | C79.11 | D09.0 | D30.3 | D41.4 | D49.4 |
| overlapping lesionNeoplasm, neoplastic › bladder(urinary) | C67.8 | — | — | — | — | — |
| occipitalNeoplasm, neoplastic › bone(periosteum) | C41.0 | C79.51 | — | D16.4- | D48.0 | D49.2 |
| orbitNeoplasm, neoplastic › bone(periosteum) | C41.0 | C79.51 | — | D16.4- | D48.0 | D49.2 |
| overlapping sitesNeoplasm, neoplastic › bone(periosteum) | C40.8- | — | — | — | — | — |
| of ankleNeoplasm, neoplastic › bone(periosteum) › scaphoid | C40.3- | C79.51 | — | — | — | — |
| of handNeoplasm, neoplastic › bone(periosteum) › scaphoid | C40.1- | C79.51 | — | — | — | — |
| occipital lobeNeoplasm, neoplastic › brain NEC | C71.4 | C79.31 | — | D33.0 | D43.0 | D49.6 |
| overlapping lesionNeoplasm, neoplastic › brain NEC | C71.8 | C79.31 | — | — | — | — |
| outerNeoplasm, neoplastic › breast(connective tissue) (glandular tissue) (soft parts) | C50.8- | C79.81 | D05.- | D24.- | D48.6- | D49.3 |
| overlapping lesionNeoplasm, neoplastic › breast(connective tissue) (glandular tissue) (soft parts) | C50.8- | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › bronchus | C34.8- | — | — | — | — | — |
| oralNeoplasm, neoplastic › cavity | C06.9 | C79.89 | D00.00 | D10.30 | D37.09 | D49.0 |
| overlapping lesionNeoplasm, neoplastic › cervix(cervical) (uteri) (uterus) | C53.8 | — | — | — | — | — |
| orbitNeoplasm, neoplastic › connective tissue NEC | C69.6- | C79.49 | D09.2- | D31.6- | D48.1- | D49.89 |
| overlapping lesionNeoplasm, neoplastic › connective tissue NEC | C49.8 | — | — | — | — | — |
| overlapping sitesNeoplasm, neoplastic › corpus | C54.8 | — | — | — | — | — |
| overlapping lesion with accessory sinusesNeoplasm, neoplastic › ear(external) | C31.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › esophagus | C15.8 | — | — | — | — | — |
| os, cervix uteriNeoplasm, neoplastic › external | C53.1 | C79.82 | D06.1 | D26.0 | D39.0 | D49.59 |
| overlapping lesion with gallbladderNeoplasm, neoplastic › extrahepatic(bile) duct | C24.8 | — | — | — | — | — |
| overlapping sitesNeoplasm, neoplastic › eye NEC | C69.8- | — | — | — | — | — |
| overlapping lesion with extrahepatic bile ductsNeoplasm, neoplastic › gallbladder | C24.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › genital organ or tract › female NEC | C57.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › genital organ or tract › male NEC | C63.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › hypopharynx, hypopharyngeal NEC | C13.8 | — | — | — | — | — |
| os(cervix)Neoplasm, neoplastic › internal | C53.0 | C79.82 | D06.0 | D26.0 | D39.0 | D49.59 |
| overlapping lesionNeoplasm, neoplastic › intestine, intestinal › large › colon | C18.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › intestine, intestinal › large | C18.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › intestine, intestinal › small | C17.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › larynx, laryngeal NEC | C32.8 | — | — | — | — | — |
| oral aspectNeoplasm, neoplastic › lip | — | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › lip | C00.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › lung | C34.8- | — | — | — | — | — |
| obturatorNeoplasm, neoplastic › lymph, lymphatic channel NEC › gland(secondary) | — | C77.5 | — | D36.0 | D48.7 | D49.89 |
| occipitalNeoplasm, neoplastic › lymph, lymphatic channel NEC › gland(secondary) | — | C77.0 | — | D36.0 | D48.7 | D49.89 |
| oblongataNeoplasm, neoplastic › medulla | C71.7 | C79.31 | — | D33.1 | D43.1 | D49.6 |
| overlapping lesionNeoplasm, neoplastic › mouth › floor | C04.8 | — | — | — | — | — |
| overlapping NECNeoplasm, neoplastic › mouth | C06.80 | — | — | — | — | — |
| oralNeoplasm, neoplastic › mucosa | C06.0 | C79.89 | D00.02 | D10.39 | D37.09 | D49.0 |
| overlapping lesionNeoplasm, neoplastic › nasopharynx, nasopharyngeal | C11.8 | — | — | — | — | — |
| obturatorNeoplasm, neoplastic › nerve(ganglion) | C47.2- | C79.89 | — | D36.13 | D48.2 | D49.2 |
| oculomotorNeoplasm, neoplastic › nerve(ganglion) | C72.59 | C79.49 | — | D33.3 | D43.3 | D49.7 |
| olfactoryNeoplasm, neoplastic › nerve(ganglion) | C47.2- | C79.49 | — | D33.3 | D43.3 | D49.7 |
| opticNeoplasm, neoplastic › nerve(ganglion) | C72.3- | C79.49 | — | D33.3 | D43.3 | D49.7 |
| orbitNeoplasm, neoplastic › nerve(ganglion) › peripheral NEC | C69.6- | C79.49 | — | D31.6- | D48.7 | D49.2 |
| occipitalNeoplasm, neoplastic | — | — | — | — | — | — |
| odontogenicNeoplasm, neoplastic | — | — | — | — | — | — |
| olfactory nerve or bulbNeoplasm, neoplastic | C72.2- | C79.49 | — | D33.3 | D43.3 | D49.7 |
| olive(brain)Neoplasm, neoplastic | C71.7 | C79.31 | — | D33.1 | D43.1 | D49.6 |
| omentumNeoplasm, neoplastic | C48.1 | C78.6 | — | D20.1 | D48.4 | D49.0 |
| operculum(brain)Neoplasm, neoplastic | C71.0 | C79.31 | — | D33.0 | D43.0 | D49.6 |
| optic nerve, chiasm, or tractNeoplasm, neoplastic | C72.3- | C79.49 | — | D33.3 | D43.3 | D49.7 |
| oral(cavity)Neoplasm, neoplastic | C06.9 | C79.89 | D00.00 | D10.30 | D37.09 | D49.0 |
| orbitNeoplasm, neoplastic | C69.6- | C79.49 | D09.2- | D31.6- | D48.7 | D49.89 |
| organ of ZuckerkandlNeoplasm, neoplastic | C75.5 | C79.89 | — | D35.6 | D44.7 | D49.7 |
| oropharynxNeoplasm, neoplastic | C10.9 | C79.89 | D00.08 | D10.5 | D37.05 | D49.0 |
| overlapping lesionNeoplasm, neoplastic › oropharynx | C10.8 | — | — | — | — | — |
| osNeoplasm, neoplastic | — | — | — | — | — | — |
| ovaryNeoplasm, neoplastic | C56.- | C79.6- | D07.39 | D27.- | D39.1- | D49.59 |
| oviductNeoplasm, neoplastic | C57.0- | C79.82 | D07.39 | D28.2 | D39.8 | D49.59 |
| overlapping lesionsNeoplasm, neoplastic › palate | C05.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › pancreas | C25.8 | — | — | — | — | — |
| overlapping sitesNeoplasm, neoplastic › penis | C60.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › peritoneum, peritoneal(cavity) | C48.8 | — | — | — | — | — |
| overlapping lesion with heart or mediastinumNeoplasm, neoplastic › pleura, pleural(cavity) | C38.8 | — | — | — | — | — |
| occipitalNeoplasm, neoplastic › pole | C71.4 | C79.31 | — | D33.0 | D43.0 | D49.6 |
| overlapping lesion with anus or rectumNeoplasm, neoplastic › rectosigmoid(junction) | C21.8 | — | — | — | — | — |
| overlapping lesion with anus or rectosigmoid junctionNeoplasm, neoplastic › rectum(ampulla) | C21.8 | — | — | — | — | — |
| organs or system NECNeoplasm, neoplastic › respiratory | C39.9 | C78.30 | D02.4 | D14.4 | D38.6 | D49.1 |
| overlapping lesionNeoplasm, neoplastic › salivary gland or duct(major) | C08.9 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › sinus(accessory) | C31.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › skin NOS | C44.80 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › skin NOS › vulva | C51.8 | — | — | — | — | — |
| of OddiNeoplasm, neoplastic › sphincter | C24.0 | C78.89 | D01.5 | D13.5 | D37.6 | D49.0 |
| overlapping lesionNeoplasm, neoplastic › stomach | C16.8 | — | — | — | — | — |
| overlapping lesionNeoplasm, neoplastic › tongue | C02.8 | — | — | — | — | — |
| overlapping sitesNeoplasm, neoplastic › tonsil | C09.8 | — | — | — | — | — |
| overlapping lesion with bronchus or lungNeoplasm, neoplastic › trachea(cartilage) (mucosa) | C34.8- | — | — | — | — | — |
| overlapping lesion with lungNeoplasm, neoplastic › tracheobronchial | C34.8- | — | — | — | — | — |
| orifice(bladder)Neoplasm, neoplastic › ureter, ureteral | C67.6 | C79.11 | D09.0 | D30.3 | D41.4 | D49.4 |
| orifice, internalNeoplasm, neoplastic › urethra, urethral(gland) | C67.5 | C79.11 | D09.0 | D30.3 | D41.4 | D49.4 |
| overlapping lesionNeoplasm, neoplastic › urinary organ or system | C68.8 | — | — | — | — | — |
| overlapping sitesNeoplasm, neoplastic › uterus, uteri, uterine | C54.8 | — | — | — | — | — |