C11.1 is the ICD-10 code for Malignant neoplasm: Posterior wall of nasopharynx. 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 C11.1 includes
Conditions and terms that are coded here.
- Adenoid
- Pharyngeal tonsil
C11.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
C11.1Ondartet svulst på bakre vegg i nasopharynx
DC111Kræft i næsesvælgets bagvæg
C11.1Hinterwand des Nasopharynx
C11.1Paroi postérieure du rhinopharynx
C11.1achterwand van nasofarynx
C11.1Malignant neoplasm of posterior wall of nasopharynx
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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