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XExtension Codes
Histopathology
Epithelial neoplasms, NOS
Epithelial neoplasms, malignant

XH1YY4 category

Carcinoma, undifferentiated, NOS

Also indexed as

Carcinoma, undifferentiated, NOS

Nearby in Epithelial neoplasms, malignant

XH56X7Carcinoma with osteoclast-like giant cells
XH63D2Carcinoma, NOS
XH3XZ6Giant cell and spindle cell carcinoma
XH1JZ2Giant cell carcinoma
XH00N7Glassy cell carcinoma
XH4QU2Large cell carcinoma with rhabdoid phenotype
XH0NL5Large cell neuroendocrine carcinoma
XH35G0Pleomorphic carcinoma

PreviousXH45J4 — Large cell carcinoma, NOS NextXH57U9 — Carcinoma, anaplastic, NOS

Browse ICD-11

01Certain infectious or parasitic diseases
02Neoplasms
03Diseases of the blood or blood-forming organs
04Diseases of the immune system
05Endocrine, nutritional or metabolic diseases
06Mental, behavioural or neurodevelopmental disorders
07Sleep-wake disorders
08Diseases of the nervous system
09Diseases of the visual system
10Diseases of the ear or mastoid process
11Diseases of the circulatory system
12Diseases of the respiratory system
13Diseases of the digestive system
14Diseases of the skin
15Diseases of the musculoskeletal system or connective tissue
16Diseases of the genitourinary system
17Conditions related to sexual health
18Pregnancy, childbirth or the puerperium
19Certain conditions originating in the perinatal period
20Developmental anomalies
21Symptoms, signs or clinical findings, not elsewhere classified
22Injury, poisoning or certain other consequences of external causes
23External causes of morbidity or mortality
24Factors influencing health status or contact with health services
25Codes for special purposes
26Supplementary Chapter Traditional Medicine Conditions
VSupplementary section for functioning assessment
XExtension Codes
Temporality
Aetiology
Topology Scale Value
Anatomy and topography
Histopathology
Dimensions of injury
Dimensions of external causes
Consciousness
Substances
5 more
Complex epithelial neoplasms
Complex mixed and stromal neoplasms
Cystic, mucinous and serous neoplasms
Ductal and lobular neoplasms
Epithelial neoplasms, NOS
Fibroepithelial neoplasms
Fibromatous neoplasms
Germ cell neoplasms
Giant cell tumours
41 more
Epithelial neoplasms, benign
Epithelial neoplasms, in situ
Epithelial neoplasms, malignant
Epithelial neoplasms, uncertain whether benign or malignant
XH35G0Pleomorphic carcinoma
XH92T7Polygonal cell carcinoma
XH35M3Pseudosarcomatous carcinoma
XH1YN3Carcinoma, metastatic, NOS
XH8D74Carcinomatosis
XH4P61Epithelioma, malignant
XH45J4Large cell carcinoma, NOS
XH1YY4Carcinoma, undifferentiated, NOS
XH57U9Carcinoma, anaplastic, NOS
XH2855Nuclear protein in testis (NUT) associated carcinoma
XH3RZ4Spindle cell carcinoma, NOS
XH0YB0Small cell carcinoma, NOS
XH9SY0Small cell neuroendocrine carcinoma
XH28J9Oat cell carcinoma
XH3T00Small cell carcinoma, fusiform cell
20 more

International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).

Release 2026-01. View this entity in the official WHO ICD-11 browser.

This page reproduces WHO classification content for reference. It is not medical advice and must not be used to diagnose or treat. For coding decisions, consult the official release and your national coding guidelines.

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