ICD-10-CM Table of Neoplasms · FY 2026 Letter N
Table of Neoplasms: Anatomical Sites Starting With N ICD-10-CM
Home › ICD-10-CM Codes List › Table of Neoplasms › NThe letter N section of the FY 2026 Table of Neoplasms covers 160 anatomical site entries under 16 top-level anatomical sites. Each row carries up to six ICD-10-CM codes, one per behavior column, and sub-entries are indented under their parent exactly as the printed CMS table nests them.
✓ Built from the official CMS FY 2026 dataset Effective Oct 1, 2025 – Sep 30, 2026
160
Anatomical site Entries
16
Top-Level Anatomical sites
Column 1
Malignant Primary
Cancer at site of origin
Column 2
Malignant Secondary
Metastatic spread
Column 3
Ca In Situ
Non-invasive, early stage
Column 4
Benign
Non-cancerous
Column 5
Uncertain Behavior
Behavior undeterminable
Column 6
Unspecified Behavior
Behavior not documented
ICD-10-CM
Table of Neoplasms: N 160 entries 160 of 160 shown
Anatomical Site Malignant Malignant Ca Benign Uncertain Unspecified nabothian gland (follicle) C53.0 C79.82 D06.0 D26.0 D39.0 D49.59 nailSee Also: Neoplasm, skin, limb C44.90 C79.2 D04.9 D23.9 D48.5 D49.2 fingerSee Also: Neoplasm, skin, limb, upper C44.60 C79.2 D04.6 D23.6 D48.5 D49.2 toeSee Also: Neoplasm, skin, limb, lower C44.70 C79.2 D04.7 D23.7 D48.5 D49.2 nares, naris (anterior) (posterior) C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 nasal – – – – – – nasolabial grooveSee Also: Neoplasm, skin, face C44.309 C79.2 D04.39 D23.39 D48.5 D49.2 nasolacrimal duct C69.5 C79.49 D09.2 D31.5 D48.7 D49.89 nasopharynx, nasopharyngeal C11.9 C79.89 D00.08 D10.6 D37.05 D49.0 floor C11.3 C79.89 D00.08 D10.6 D37.05 D49.0 overlapping lesion C11.8 – – – – – roof C11.0 C79.89 D00.08 D10.6 D37.05 D49.0 wall C11.9 C79.89 D00.08 D10.6 D37.05 D49.0 anterior C11.3 C79.89 D00.08 D10.6 D37.05 D49.0 lateral C11.2 C79.89 D00.08 D10.6 D37.05 D49.0 posterior C11.1 C79.89 D00.08 D10.6 D37.05 D49.0 superior C11.0 C79.89 D00.08 D10.6 D37.05 D49.0 natesSee Also: Neoplasm, skin, trunk C44.509 C79.2 D04.5 D23.5 D48.5 D49.2 neck NEC C76.0 C79.89 D09.8 D36.7 D48.7 D49.89 skin C44.40 – – – – – basal cell carcinoma C44.41 – – – – – specified type NEC C44.49 – – – – – squamous cell carcinoma C44.42 – – – – – nerve (ganglion) C47.9 C79.89 – D36.10 D48.2 D49.2 abducens C72.59 C79.49 – D33.3 D43.3 D49.7 accessory (spinal) C72.59 C79.49 – D33.3 D43.3 D49.7 acoustic C72.4 C79.49 – D33.3 D43.3 D49.7 auditory C72.4 C79.49 – D33.3 D43.3 D49.7 autonomic NECSee Also: Neoplasm, nerve, peripheral C47.9 C79.89 – D36.10 D48.2 D49.2 brachial C47.1 C79.89 – D36.12 D48.2 D49.2 cranial C72.50 C79.49 – D33.3 D43.3 D49.7 specified NEC C72.59 C79.49 – D33.3 D43.3 D49.7 facial C72.59 C79.49 – D33.3 D43.3 D49.7 femoral C47.2 C79.89 – D36.13 D48.2 D49.2 ganglion NECSee Also: Neoplasm, nerve, peripheral C47.9 C79.89 – D36.10 D48.2 D49.2 glossopharyngeal C72.59 C79.49 – D33.3 D43.3 D49.7 hypoglossal C72.59 C79.49 – D33.3 D43.3 D49.7 intercostal C47.3 C79.89 – D36.14 D48.2 D49.2 lumbar C47.6 C79.89 – D36.17 D48.2 D49.2 median C47.1 C79.89 – D36.12 D48.2 D49.2 obturator C47.2 C79.89 – D36.13 D48.2 D49.2 oculomotor C72.59 C79.49 – D33.3 D43.3 D49.7 olfactory C47.2 C79.49 – D33.3 D43.3 D49.7 optic C72.3 C79.49 – D33.3 D43.3 D49.7 parasympathetic NEC C47.9 C79.89 – D36.10 D48.2 D49.2 peripheral NEC C47.9 C79.89 – D36.10 D48.2 D49.2 abdomen C47.4 C79.89 – D36.15 D48.2 D49.2 abdominal wall C47.4 C79.89 – D36.15 D48.2 D49.2 ankle C47.2 C79.89 – D36.13 D48.2 D49.2 antecubital fossa or space C47.1 C79.89 – D36.12 D48.2 D49.2 arm C47.1 C79.89 – D36.12 D48.2 D49.2 auricle (ear) C47.0 C79.89 – D36.11 D48.2 D49.2 axilla C47.3 C79.89 – D36.12 D48.2 D49.2 back C47.6 C79.89 – D36.17 D48.2 D49.2 buttock C47.5 C79.89 – D36.16 D48.2 D49.2 calf C47.2 C79.89 – D36.13 D48.2 D49.2 cervical region C47.0 C79.89 – D36.11 D48.2 D49.2 cheek C47.0 C79.89 – D36.11 D48.2 D49.2 chest (wall) C47.3 C79.89 – D36.14 D48.2 D49.2 chin C47.0 C79.89 – D36.11 D48.2 D49.2 ear (external) C47.0 C79.89 – D36.11 D48.2 D49.2 elbow C47.1 C79.89 – D36.12 D48.2 D49.2 extrarectal C47.5 C79.89 – D36.16 D48.2 D49.2 extremity C47.9 C79.89 – D36.10 D48.2 D49.2 lower C47.2 C79.89 – D36.13 D48.2 D49.2 upper C47.1 C79.89 – D36.12 D48.2 D49.2 eyelid C47.0 C79.89 – D36.11 D48.2 D49.2 face C47.0 C79.89 – D36.11 D48.2 D49.2 finger C47.1 C79.89 – D36.12 D48.2 D49.2 flank C47.6 C79.89 – D36.17 D48.2 D49.2 foot C47.2 C79.89 – D36.13 D48.2 D49.2 forearm C47.1 C79.89 – D36.12 D48.2 D49.2 forehead C47.0 C79.89 – D36.11 D48.2 D49.2 gluteal region C47.5 C79.89 – D36.16 D48.2 D49.2 groin C47.5 C79.89 – D36.16 D48.2 D49.2 hand C47.1 C79.89 – D36.12 D48.2 D49.2 head C47.0 C79.89 – D36.11 D48.2 D49.2 heel C47.2 C79.89 – D36.13 D48.2 D49.2 hip C47.2 C79.89 – D36.13 D48.2 D49.2 infraclavicular region C47.3 C79.89 – D36.14 D48.2 D49.2 inguinal (canal) (region) C47.5 C79.89 – D36.16 D48.2 D49.2 intrathoracic C47.3 C79.89 – D36.14 D48.2 D49.2 ischiorectal fossa C47.5 C79.89 – D36.16 D48.2 D49.2 knee C47.2 C79.89 – D36.13 D48.2 D49.2 leg C47.2 C79.89 – D36.13 D48.2 D49.2 limb NEC C47.9 C79.89 – D36.10 D48.2 D49.2 lower C47.2 C79.89 – D36.13 D48.2 D49.2 upper C47.1 C79.89 – D36.12 D48.2 D49.2 nates C47.5 C79.89 – D36.16 D48.2 D49.2 neck C47.0 C79.89 – D36.11 D48.2 D49.2 orbit C69.6 C79.49 – D31.6 D48.7 D49.2 pararectal C47.5 C79.89 – D36.16 D48.2 D49.2 paraurethral C47.5 C79.89 – D36.16 D48.2 D49.2 paravaginal C47.5 C79.89 – D36.16 D48.2 D49.2 pelvis (floor) C47.5 C79.89 – D36.16 D48.2 D49.2 pelvoabdominal C47.8 C79.89 – D36.17 D48.2 D49.2 perineum C47.5 C79.89 – D36.16 D48.2 D49.2 perirectal (tissue) C47.5 C79.89 – D36.16 D48.2 D49.2 periurethral (tissue) C47.5 C79.89 – D36.16 D48.2 D49.2 popliteal fossa or space C47.2 C79.89 – D36.13 D48.2 D49.2 presacral C47.5 C79.89 – D36.16 D48.2 D49.2 pterygoid fossa C47.0 C79.89 – D36.11 D48.2 D49.2 rectovaginal septum or wall C47.5 C79.89 – D36.16 D48.2 D49.2 rectovesical C47.5 C79.89 – D36.16 D48.2 D49.2 sacrococcygeal region C47.5 C79.89 – D36.16 D48.2 D49.2 scalp C47.0 C79.89 – D36.11 D48.2 D49.2 scapular region C47.3 C79.89 – D36.14 D48.2 D49.2 shoulder C47.1 C79.89 – D36.12 D48.2 D49.2 submental C47.0 C79.89 – D36.11 D48.2 D49.2 supraclavicular region C47.0 C79.89 – D36.11 D48.2 D49.2 temple C47.0 C79.89 – D36.11 D48.2 D49.2 temporal region C47.0 C79.89 – D36.11 D48.2 D49.2 thigh C47.2 C79.89 – D36.13 D48.2 D49.2 thoracic (duct) (wall) C47.3 C79.89 – D36.14 D48.2 D49.2 thorax C47.3 C79.89 – D36.14 D48.2 D49.2 thumb C47.1 C79.89 – D36.12 D48.2 D49.2 toe C47.2 C79.89 – D36.13 D48.2 D49.2 trunk C47.6 C79.89 – D36.17 D48.2 D49.2 umbilicus C47.4 C79.89 – D36.15 D48.2 D49.2 vesicorectal C47.5 C79.89 – D36.16 D48.2 D49.2 wrist C47.1 C79.89 – D36.12 D48.2 D49.2 radial C47.1 C79.89 – D36.12 D48.2 D49.2 sacral C47.5 C79.89 – D36.16 D48.2 D49.2 sciatic C47.2 C79.89 – D36.13 D48.2 D49.2 spinal NEC C47.9 C79.89 – D36.10 D48.2 D49.2 accessory C72.59 C79.49 – D33.3 D43.3 D49.7 sympathetic NECSee Also: Neoplasm, nerve, peripheral C47.9 C79.89 – D36.10 D48.2 D49.2 trigeminal C72.59 C79.49 – D33.3 D43.3 D49.7 trochlear C72.59 C79.49 – D33.3 D43.3 D49.7 ulnar C47.1 C79.89 – D36.12 D48.2 D49.2 vagus C72.59 C79.49 – D33.3 D43.3 D49.7 nervous system (central) C72.9 C79.40 – D33.9 D43.9 D49.7 autonomic – – – – – – parasympathetic – – – – – – specified site NEC – C79.49 – D33.7 D43.8 – sympathetic – – – – – – nevus – – – – – – nipple C50.0 C79.81 D05 D24 – – nose, nasal C76.0 C79.89 D09.8 D36.7 D48.7 D49.89 ala (external) (nasi)See Also: Neoplasm, nose, skin C44.301 C79.2 D04.39 D23.39 D48.5 D49.2 bone C41.0 C79.51 – D16.4 D48.0 D49.2 cartilage C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 cavity C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 choana C11.3 C79.89 D00.08 D10.6 D37.05 D49.0 external (skin)See Also: Neoplasm, nose, skin C44.301 C79.2 D04.39 D23.39 D48.5 D49.2 fossa C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 internal C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 mucosa C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 septum C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 posterior margin C11.3 C79.89 D00.08 D10.6 D37.05 D49.0 sinus – – – – – – skin C44.301 C79.2 D04.39 D23.39 D48.5 D49.2 basal cell carcinoma C44.311 – – – – – specified type NEC C44.391 – – – – – squamous cell carcinoma C44.321 – – – – – turbinate (mucosa) C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 bone C41.0 C79.51 – D16.4 D48.0 D49.2 vestibule C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 nostril C30.0 C78.39 D02.3 D14.0 D38.5 D49.1 nucleus pulposus C41.2 C79.51 – D16.6 D48.0 D49.2
Questions About This Page How do I pick the right column? The pathology or clinical documentation names the behavior. When the description of the neoplasm names the behavior, that description overrides the Index guidance, and the matching column supplies the code.
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.
