C18.7 is the ICD-10 code for Malignant neoplasm: Sigmoid colon. It is a four-character subcategory of C18 (Malignant neoplasm of colon), the most specific level in the WHO edition. It belongs to the block C15–C26 (Malignant neoplasms of digestive organs) in Chapter II, Neoplasms.
- Code type
- Subcategory (4 characters)
- Chapter
- II · C00–D48
- Classification
- WHO ICD-10, 2019 version
What C18.7 includes
Conditions and terms that are coded here.
- Sigmoid (flexure)
What C18.7 excludes
Conditions that look similar but belong under another code.
- rectosigmoid junction C19
C18.7 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
C18.7Ondartet svulst i sigmoideum
DC187Kræft i colon sigmoideum
C18.7Sigmasuolen syöpä
C18.7Colon sigmoideum
C18.7Côlon sigmoïde
C18.7colon sigmoideum
C18.7Malignant neoplasm of sigmoid colon
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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