2026 ICD-10-CM Table of Neoplasms ICD-10-CM
The FY 2026 Table of Neoplasms indexes 1,939 anatomical site entries, each carrying up to six ICD-10-CM codes according to whether the neoplasm is malignant primary, malignant secondary, in situ, benign, of uncertain behavior, or of unspecified nature. Search the table with the Table of Neoplasms Lookup, or browse it by site name below.
- abdomen, abdominal
- abdominopelvic
- accessory sinus
- acoustic nerve
- adenoid (pharynx) (tissue)
- adipose tissue
- back NEC
- Bartholin's gland
- basal ganglia
- basis pedunculi
- bile or biliary (tract)
- bladder (urinary)
- calf
- calvarium
- calyx, renal
- canal
- canaliculi, biliary (biliferi) (intrahepatic)
- canthus (eye) (inner) (outer)
- dermis
- diaphragm
- digestive organs, system, tube, or tract NEC
- disc, intervertebral
- disease, generalized
- disseminated
- ear (external)
- earlobe
- ejaculatory duct
- elbow NEC
- endocardium
- endocervix (canal) (gland)
- face NEC
- fallopian tube (accessory)
- falx (cerebella) (cerebri)
- fascia
- fatty tissue
- fauces, faucial NEC
- gall duct (extrahepatic)
- gallbladder
- ganglia
- Gartner's duct
- gastric
- gastrocolic
- hand NEC
- head NEC
- heart
- heel NEC
- helix
- hematopoietic, hemopoietic tissue NEC
- ileocecum, ileocecal (coil) (junction) (valve)
- ileum
- ilium
- immunoproliferative NEC
- infraclavicular (region)
- inguinal (region)
- labia (skin)
- labial
- labium (skin)
- lacrimal
- Langerhans, islands or islets
- laryngopharynx
- Mackenrodt's ligament
- malar
- mammary gland
- mandible
- marrow (bone) NEC
- mastectomy site (skin)
- nabothian gland (follicle)
- nail
- nares, naris (anterior) (posterior)
- nasal
- nasolabial groove
- nasolacrimal duct
- occipital
- odontogenic
- olfactory nerve or bulb
- olive (brain)
- omentum
- operculum (brain)
- palate
- palatoglossal arch
- palatopharyngeal arch
- pallium
- palpebra
- pancreas
- radius (any part)
- Rathke's pouch
- rectosigmoid (junction)
- rectouterine pouch
- rectovaginal septum or wall
- rectovesical septum
- sacrococcyx, sacrococcygeal
- sacrouterine ligament
- sacrum, sacral (vertebra)
- salivary gland or duct (major)
- salpinx (uterine)
- Santorini's duct
- tapetum, brain
- tarsus (any bone)
- temple (skin)
- temporal
- tendon (sheath)
- tentorium (cerebelli)
- ulna (any part)
- umbilicus, umbilical
- uncus, brain
- unknown site or unspecified
- urachus
- ureter, ureteral
- vagina, vaginal (fornix) (vault) (wall)
- vaginovesical
- vallecula (epigiottis)
- vas deferens
- vascular
- Vater's ampulla
- Waldeyer's ring
- Wharton's duct
- white matter (central) (cerebral)
- windpipe
- Wirsung's duct
- wolffian (body) (duct)
Questions About This Page
How do I pick the right column?
The pathology or clinical documentation names the behavior: a confirmed primary cancer uses Malignant Primary, metastasis uses Malignant Secondary, and a growth the pathologist cannot classify uses Uncertain Behavior. When the description of the neoplasm names the behavior, that description overrides the Index guidance.
How is the table organized?
By anatomical site, alphabetically, with sub-sites nested under their parent site. Each site row carries up to six codes, one per behavior column, and every code links to its reference page.
Why are some cells empty?
Not every site has a code for every behavior. An empty cell means the classification does not provide a code in that column for that site, and the parent row or the main Index should be consulted.
Related References
Source: official CMS FY 2026 ICD-10-CM release, effective October 1, 2025 through September 30, 2026.
