C11.9 is the ICD-10 code for Malignant neoplasm: Nasopharynx, unspecified. It is a four-character subcategory of C11 (Malignant neoplasm of nasopharynx), the most specific level in the WHO edition. It belongs to the block C00–C14 (Malignant neoplasms of lip, oral cavity and pharynx) in Chapter II, Neoplasms.
- Code type
- Subcategory (4 characters)
- Chapter
- II · C00–D48
- Classification
- WHO ICD-10, 2019 version
What C11.9 includes
Conditions and terms that are coded here.
- Nasopharyngeal wall NOS
C11.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
C11.9Ospecificerad lokalisation av malign tumör i rinofarynx
C11.9Ondartet svulst i uspesifisert del av nasopharynx
DC119Kræft i næsesvælget UNS
C11.9Nasopharynx, nicht näher bezeichnet
C11.9Rhinopharynx, sans précision
C11.9nasofarynx, niet-gespecificeerd
C11.9Malignant neoplasm of nasopharynx, unspecified
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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