ICD-11 MMS

02 Neoplasms

Malignant neoplasms, except primary neoplasms of lymphoid, haematopoietic, central nervous system or related tissues  (2B50-2E2Z)

Malignant neoplasms, stated or presumed to be primary, of specified sites, except of lymphoid, haematopoietic, central nervous system or related tissues  (2B50-2D3Z)

Malignant neoplasms of endocrine glands  (2D10-2D1Z)

2D10 Malignant neoplasms of thyroid gland

2D10.3 Undifferentiated carcinoma of thyroid gland

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01


A primary carcinoma of the thyroid gland composed of undifferentiated cells. The malignant cells demonstrate evidence of epithelial differentiation, either by immunohistochemistry or electron microscopic studies. Microscopically, in the majority of cases there is a mixture of spindle, epithelioid, and giant cells. The vast majority of the patients present with a rapidly enlarging neck mass. The clinical course is invariably aggressive.

inclusions

postcoordination

Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.

Laterality  - only one may be selected
Specific anatomy  - multiple selections are allowed
Has manifestation  - multiple selections are allowed
Has severity  - only one may be selected
Has alternative severity2  - only one may be selected

synonyms

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