Table of Neoplasms — M
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. 114 sites beginning with M.
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 |
|---|---|---|---|---|---|---|
| medullaNeoplasm, neoplastic › adrenal | C74.1- | C79.7- | D09.3 | D35.0- | D44.1- | D49.7 |
| mucosaNeoplasm, neoplastic › alveolar | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| mucosaNeoplasm, neoplastic › alveolar › ridge or process | C03.9 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| marginNeoplasm, neoplastic › anus, anal | C44.500 | C79.2 | D04.5 | D23.5 | D48.5 | D49.2 |
| marginal zoneNeoplasm, neoplastic › aryepiglottic fold | C13.1 | C79.89 | D00.08 | D10.7 | D37.05 | D49.0 |
| malarNeoplasm, neoplastic › bone(periosteum) | C41.0 | C79.51 | — | D16.4- | D48.0 | D49.2 |
| mandibleNeoplasm, neoplastic › bone(periosteum) | C41.1 | C79.51 | — | D16.5- | D48.0 | D49.2 |
| marrow NEC(any bone)Neoplasm, neoplastic › bone(periosteum) | C96.9 | C79.52 | — | — | D47.9 | D49.89 |
| mastoidNeoplasm, neoplastic › bone(periosteum) | C41.0 | C79.51 | — | D16.4- | D48.0 | D49.2 |
| maxilla, maxillary(superior)Neoplasm, neoplastic › bone(periosteum) | C41.0 | C79.51 | — | D16.4- | D48.0 | D49.2 |
| metacarpus(any)Neoplasm, neoplastic › bone(periosteum) | C40.1- | C79.51 | — | D16.1- | — | — |
| metatarsus(any)Neoplasm, neoplastic › bone(periosteum) | C40.3- | C79.51 | — | D16.3- | — | — |
| medulla oblongataNeoplasm, neoplastic › brain NEC | C71.7 | C79.31 | — | D33.1 | D43.1 | D49.6 |
| meningesNeoplasm, neoplastic › brain NEC | C70.0 | C79.32 | — | D32.0 | D42.0 | D49.7 |
| midbrainNeoplasm, neoplastic › brain NEC | C71.7 | C79.31 | — | D33.1 | D43.1 | D49.6 |
| mastectomy site(skin)Neoplasm, neoplastic › breast(connective tissue) (glandular tissue) (soft parts) | C44.501 | C79.2 | — | — | — | — |
| midlineNeoplasm, neoplastic › breast(connective tissue) (glandular tissue) (soft parts) | C50.8- | C79.81 | D05.- | D24.- | D48.6- | D49.3 |
| mainNeoplasm, neoplastic › bronchus | C34.0- | C78.0- | D02.2- | D14.3- | D38.1 | D49.1 |
| middle lobe of lungNeoplasm, neoplastic › bronchus | C34.2 | C78.0- | D02.21 | D14.31 | D38.1 | D49.1 |
| mucosaNeoplasm, neoplastic › buccal(cavity) | C06.0 | C79.89 | D00.02 | D10.39 | D37.09 | D49.0 |
| meningesNeoplasm, neoplastic › cerebrum, cerebral(cortex) (hemisphere) (white matter) | C70.0 | C79.32 | — | D32.0 | D42.0 | D49.7 |
| mucosaNeoplasm, neoplastic › cheek | C06.0 | C79.89 | D00.02 | D10.39 | D37.09 | D49.0 |
| meningesNeoplasm, neoplastic › cranial(fossa, any) | C70.0 | C79.32 | — | D32.0 | D42.0 | D49.7 |
| middleNeoplasm, neoplastic › ear(external) | C30.1 | C78.39 | D02.3 | D14.0 | D38.5 | D49.1 |
| middle(third)Neoplasm, neoplastic › esophagus | C15.4 | C78.89 | D00.1 | D13.0 | D37.8 | D49.0 |
| meatus(ear)Neoplasm, neoplastic › external | C44.20- | C79.2 | D04.2- | D23.2- | D48.5 | D49.2 |
| middle(cranial)Neoplasm, neoplastic › fossa(of) | C71.9 | C79.31 | — | D33.2 | D43.2 | D49.6 |
| male NECNeoplasm, neoplastic › genital organ or tract | C63.9 | C79.82 | D07.60 | D29.9 | D40.9 | D49.59 |
| maleNeoplasm, neoplastic › genitourinary tract | C63.9 | C79.82 | D07.60 | D29.9 | D40.9 | D49.59 |
| mandibularNeoplasm, neoplastic › gingiva(alveolar) (marginal) | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| maxillaryNeoplasm, neoplastic › gingiva(alveolar) (marginal) | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| marginal zoneNeoplasm, neoplastic › interarytenoid fold | C13.1 | C79.89 | D00.08 | D10.7 | D37.05 | D49.0 |
| majoraNeoplasm, neoplastic › labia(skin) | C51.0 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| minoraNeoplasm, neoplastic › labia(skin) | C51.1 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| majusNeoplasm, neoplastic › labium(skin) | C51.0 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| minusNeoplasm, neoplastic › labium(skin) | C51.1 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| meaning hypopharynxNeoplasm, neoplastic › larynx, laryngeal NEC › extrinsic NEC | C13.9 | C79.89 | D00.08 | D10.7 | D37.05 | D49.0 |
| Mackenrodt'sNeoplasm, neoplastic › ligament | C57.7 | C79.82 | D07.39 | D28.7 | D39.8 | D49.59 |
| mucosaNeoplasm, neoplastic › lip | — | — | — | — | — | — |
| main bronchusNeoplasm, neoplastic › lung | C34.0- | C78.0- | D02.2- | D14.3- | D38.1 | D49.1 |
| mesotheliomaNeoplasm, neoplastic › lung | — | — | — | — | — | — |
| middle lobeNeoplasm, neoplastic › lung | C34.2 | C78.0- | D02.21 | D14.31 | D38.1 | D49.1 |
| mandibularNeoplasm, neoplastic › lymph, lymphatic channel NEC › gland(secondary) | — | C77.0 | — | D36.0 | D48.7 | D49.89 |
| mediastinalNeoplasm, neoplastic › lymph, lymphatic channel NEC › gland(secondary) | — | C77.1 | — | D36.0 | D48.7 | D49.89 |
| mesenteric(inferior) (superior)Neoplasm, neoplastic › lymph, lymphatic channel NEC › gland(secondary) | — | C77.2 | — | D36.0 | D48.7 | D49.89 |
| midcolicNeoplasm, neoplastic › lymph, lymphatic channel NEC › gland(secondary) | — | C77.2 | — | D36.0 | D48.7 | D49.89 |
| multiple sites in categories C77.0 - C77.5Neoplasm, neoplastic › lymph, lymphatic channel NEC › gland(secondary) | — | C77.8 | — | D36.0 | D48.7 | D49.89 |
| Mackenrodt's ligamentNeoplasm, neoplastic | C57.7 | C79.82 | D07.39 | D28.7 | D39.8 | D49.59 |
| malarNeoplasm, neoplastic | C41.0 | C79.51 | — | D16.4- | D48.0 | D49.2 |
| mammary glandNeoplasm, neoplastic | — | — | — | — | — | — |
| mandibleNeoplasm, neoplastic | C41.1 | C79.51 | — | D16.5- | D48.0 | D49.2 |
| mucosa(carcinoma)Neoplasm, neoplastic › mandible › alveolar | C03.1 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| marrow(bone) NECNeoplasm, neoplastic | C96.9 | C79.52 | — | — | D47.9 | D49.89 |
| mastectomy site(skin)Neoplasm, neoplastic | C44.501 | C79.2 | — | — | — | — |
| mastoid(air cells) (antrum) (cavity)Neoplasm, neoplastic | C30.1 | C78.39 | D02.3 | D14.0 | D38.5 | D49.1 |
| maxilla, maxillary(superior)Neoplasm, neoplastic | C41.0 | C79.51 | — | D16.4- | D48.0 | D49.2 |
| mucosaNeoplasm, neoplastic › maxilla, maxillary(superior) › alveolar | C03.0 | C79.89 | D00.03 | D10.39 | D37.09 | D49.0 |
| meatus external(ear)Neoplasm, neoplastic | C44.20- | C79.2 | D04.2- | D23.2- | D48.5 | D49.2 |
| Meckel diverticulum, malignantNeoplasm, neoplastic | C17.3 | C78.4 | D01.49 | D13.39 | D37.2 | D49.0 |
| mediastinum, mediastinalNeoplasm, neoplastic | C38.3 | C78.1 | — | D15.2 | D38.3 | D49.89 |
| medullaNeoplasm, neoplastic | — | — | — | — | — | — |
| meibomian glandNeoplasm, neoplastic | C44.10- | C79.2 | D04.1- | D23.1- | D48.5 | D49.2 |
| melanomaNeoplasm, neoplastic | — | — | — | — | — | — |
| meningesNeoplasm, neoplastic | C70.9 | C79.49 | — | D32.9 | D42.9 | D49.7 |
| meniscus, knee joint(lateral) (medial)Neoplasm, neoplastic | C40.2- | C79.51 | — | D16.2- | D48.0 | D49.2 |
| Merkel cellNeoplasm, neoplastic | — | — | — | — | — | — |
| mesentery, mesentericNeoplasm, neoplastic | C48.1 | C78.6 | — | D20.1 | D48.4 | D49.0 |
| mesoappendixNeoplasm, neoplastic | C48.1 | C78.6 | — | D20.1 | D48.4 | D49.0 |
| mesocolonNeoplasm, neoplastic | C48.1 | C78.6 | — | D20.1 | D48.4 | D49.0 |
| mesopharynxNeoplasm, neoplastic | — | — | — | — | — | — |
| mesosalpinxNeoplasm, neoplastic | C57.1 | C79.82 | D07.39 | D28.2 | D39.8 | D49.59 |
| mesothelial tissueNeoplasm, neoplastic | — | — | — | — | — | — |
| mesotheliomaNeoplasm, neoplastic | — | — | — | — | — | — |
| mesovariumNeoplasm, neoplastic | C57.1 | C79.82 | D07.39 | D28.2 | D39.8 | D49.59 |
| metacarpus(any bone)Neoplasm, neoplastic | C40.1- | C79.51 | — | D16.1- | — | — |
| metastatic NECNeoplasm, neoplastic | — | C79.9 | — | — | — | — |
| metatarsus(any bone)Neoplasm, neoplastic | C40.3- | C79.51 | — | D16.3- | — | — |
| midbrainNeoplasm, neoplastic | C71.7 | C79.31 | — | D33.1 | D43.1 | D49.6 |
| milk ductNeoplasm, neoplastic | — | — | — | — | — | — |
| monsNeoplasm, neoplastic | — | — | — | — | — | — |
| motor tractNeoplasm, neoplastic | C72.9 | C79.49 | — | D33.9 | D43.9 | D49.7 |
| mouthNeoplasm, neoplastic | C06.9 | C79.89 | D00.00 | D10.30 | D37.09 | D49.0 |
| mucosaNeoplasm, neoplastic | — | — | — | — | — | — |
| Mullerian ductNeoplasm, neoplastic | — | — | — | — | — | — |
| maleNeoplasm, neoplastic › Mullerian duct | C63.7 | C79.82 | D07.69 | D29.8 | D40.8 | D49.59 |
| muscleNeoplasm, neoplastic | — | — | — | — | — | — |
| myocardiumNeoplasm, neoplastic | C38.0 | C79.89 | — | D15.1 | D48.7 | D49.89 |
| myometriumNeoplasm, neoplastic | C54.2 | C79.82 | D07.0 | D26.1 | D39.0 | D49.59 |
| myopericardiumNeoplasm, neoplastic | C38.0 | C79.89 | — | D15.1 | D48.7 | D49.89 |
| medianNeoplasm, neoplastic › nerve(ganglion) | C47.1- | C79.89 | — | D36.12 | D48.2 | D49.2 |
| mucosaNeoplasm, neoplastic › nose, nasal | C30.0 | C78.39 | D02.3 | D14.0 | D38.5 | D49.1 |
| mucosaNeoplasm, neoplastic › oral(cavity) | C06.0 | C79.83 | D00.02 | D10.39 | D37.09 | D49.0 |
| minor NECNeoplasm, neoplastic › salivary gland or duct(major) | C06.9 | C79.89 | D00.00 | D10.39 | D37.04 | D49.0 |
| maxillaryNeoplasm, neoplastic › sinus(accessory) | C31.0 | C78.39 | D02.3 | D14.0 | D38.5 | D49.1 |
| majusNeoplasm, neoplastic › skin NOS › female genital organs(external) › labium NEC | C51.0 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| minusNeoplasm, neoplastic › skin NOS › female genital organs(external) › labium NEC | C51.1 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| majoraNeoplasm, neoplastic › skin NOS › labia | C51.0 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| minoraNeoplasm, neoplastic › skin NOS › labia | C51.1 | C79.82 | D07.1 | D28.0 | D39.8 | D49.59 |
| male genital organsNeoplasm, neoplastic › skin NOS | C63.9 | C79.82 | D07.60 | D29.9 | D40.8 | D49.59 |
| mastectomy site(skin)Neoplasm, neoplastic › skin NOS | C44.501 | C79.2 | — | — | — | — |
| meatus, acoustic(external)Neoplasm, neoplastic › skin NOS | C44.20- | C79.2 | D04.2- | D23.2- | D48.5 | D49.2 |
| melanoticNeoplasm, neoplastic › skin NOS | — | — | — | — | — | — |
| Merkel cellNeoplasm, neoplastic › skin NOS | — | — | — | — | — | — |
| marrow NECNeoplasm, neoplastic › spine, spinal(column) | C96.9 | C79.52 | — | — | D47.9 | D49.89 |
| membraneNeoplasm, neoplastic › spine, spinal(column) | C70.1 | C79.49 | — | D32.1 | D42.1 | D49.7 |
| meningesNeoplasm, neoplastic › spine, spinal(column) | C70.1 | C79.49 | — | D32.1 | D42.1 | D49.7 |
| medullaNeoplasm, neoplastic › suprarenal | C74.1- | C79.7- | D09.3 | D35.0- | D44.1- | D49.7 |
| margin(lateral)Neoplasm, neoplastic › tongue | C02.1 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| midline NECNeoplasm, neoplastic › tongue | C02.0 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| mobile part NECNeoplasm, neoplastic › tongue | C02.3 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| myometriumNeoplasm, neoplastic › uterus, uteri, uterine | C54.2 | C79.82 | D07.0 | D26.1 | D39.0 | D49.59 |
| marrow NECNeoplasm, neoplastic › vertebra(column) | C96.9 | C79.52 | — | — | D47.9 | D49.89 |
| mouthNeoplasm, neoplastic › vestibule | C06.1 | C79.89 | D00.00 | D10.39 | D37.09 | D49.0 |
| maleNeoplasm, neoplastic › wolffian(body) (duct) | C63.7 | C79.82 | D07.69 | D29.8 | D40.8 | D49.59 |