C12 is the ICD-10 code for Malignant neoplasm of piriform sinus. It is a three-character category that is not subdivided further. It belongs to the block C00–C14 (Malignant neoplasms of lip, oral cavity and pharynx) in Chapter II, Neoplasms.
- Code type
- Category (3 characters)
- Chapter
- II · C00–D48
- Classification
- WHO ICD-10, 2019 version
What C12 includes
Conditions and terms that are coded here.
- Piriform fossa
C12 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
C12Ondartet svulst i sinus piriformis
DC12Kræft i recessus piriformis
- DC129Kræft i recessus piriformis
C12Bösartige Neubildung des Recessus piriformis
C12Tumeur maligne du sinus piriforme
C12maligne neoplasma van sinus piriformis
C12Malignant neoplasm of pyriform sinus
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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