C66 is the ICD-10 code for Malignant neoplasm of ureter. It is a three-character category that is not subdivided further. It belongs to the block C64–C68 (Malignant neoplasms of urinary tract) in Chapter II, Neoplasms.
- Code type
- Category (3 characters)
- Chapter
- II · C00–D48
- Classification
- WHO ICD-10, 2019 version
What C66 excludes
Conditions that look similar but belong under another code.
- ureteric orifice of bladder C67.6
C66 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
C66Ondartet svulst i urinleder
DC66Kræft i urinleder
- DC669Kræft i urinleder
C66Virtsanjohtimen syöpä
C66Bösartige Neubildung des Ureters
C66Tumeur maligne de l'uretère
C66maligne neoplasma van ureter
Listed through more specific codes:
- C66.1Malignant neoplasm of right ureter
- C66.2Malignant neoplasm of left ureter
- C66.9Malignant neoplasm of unspecified ureter
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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