C11.1
BillableMalignant neoplasm of posterior wall of nasopharynx
Malignant neoplasm of posterior wall of nasopharynx
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Malignant neoplasm of adenoid
- Malignant neoplasm of pharyngeal tonsil
Use Additional Code
Additional codes that should follow this code
Related Codes(5)
C11.0Malignant neoplasm of superior wall of nasopharynx
C11.2Malignant neoplasm of lateral wall of nasopharynx
C11.3Malignant neoplasm of anterior wall of nasopharynx
C11.8Malignant neoplasm of overlapping sites of nasopharynx
C11.9Malignant neoplasm of nasopharynx, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(71)
SNOMED CT
- Primary malignant neoplasm of adenoid93662008
- Primary malignant neoplasm of posterior wall of nasopharynx93970001
- Primary malignant neoplasm of Waldeyer ring94144008
- Primary malignant neoplasm of Waldeyer's ring94144008
- Neoplasm of adenoid127228008
- Tumor of adenoid127228008
- Tumour of adenoid127228008
- Malignant neoplasm of posterior wall of nasopharynx187693006
- Malignant tumor of posterior wall of nasopharynx187693006
- Malignant tumour of posterior wall of nasopharynx187693006
- Malignant neoplasm of adenoid187694000
- Malignant neoplasm of pharyngeal tonsil187694000
- Malignant tumor of adenoid187694000
- Malignant tumor of nasopharyngeal tonsil187694000
- Malignant tumor of pharyngeal tonsil187694000
- Malignant tumour of adenoid187694000
- Malignant tumour of nasopharyngeal tonsil187694000
- Malignant tumour of pharyngeal tonsil187694000
- Undifferentiated carcinoma of nasopharynx422541001
- Primary squamous cell carcinoma of adenoid722530005
- Primary squamous cell carcinoma of pharyngeal tonsil722530005
- Adenoid squamous cell carcinoma of nasopharynx1010656004
- Squamous cell carcinoma of posterior wall of nasopharynx1010675009
- Primary squamous cell carcinoma of Waldeyer ring1197276007
- Primary squamous cell carcinoma of pharyngeal lymphoid ring1197276007
- Primary undifferentiated carcinoma of nasopharynx1259509002
- Primary squamous cell carcinoma of posterior wall of nasopharynx689251000119101
- Primary undifferentiated carcinoma of posterior wall of nasopharynx689901000119106
UMLS
- Malignant Neoplasm of Posterior Wall of NasopharynxC0153394
- Malignant neoplasm of posterior wall of nasopharynxC0153394
- Malignant neoplasm of posterior wall of nasopharynx (disorder)C0153394
- Malignant tumor of posterior wall of nasopharynxC0153394
- Malignant tumour of posterior wall of nasopharynxC0153394
- Malignant neoplasm of adenoidC0345653
- Malignant neoplasm of adenoid (disorder)C0345653
- Malignant neoplasm of pharyngeal tonsilC0345653
- Malignant tumor of adenoidC0345653
- Malignant tumor of nasopharyngeal tonsilC0345653
- Malignant tumor of pharyngeal tonsilC0345653
- Malignant tumour of adenoidC0345653
- Malignant tumour of nasopharyngeal tonsilC0345653
- Malignant tumour of pharyngeal tonsilC0345653
Clinical Terms
- Malignant tumor of nasopharyngeal tonsil
- Adenoid squamous cell carcinoma of nasopharynx
- Malignant neoplasm of posterior wall of nasopharynx (disorder)
- Primary malignant neoplasm of adenoid
- Malignant neoplasm of adenoid (disorder)
- Primary squamous cell carcinoma of pharyngeal lymphoid ring
- Primary undifferentiated carcinoma of posterior wall of nasopharynx
- Primary squamous cell carcinoma of posterior wall of nasopharynx
- Tumour of adenoid
- Malignant neoplasm of pharyngeal tonsil
- Malignant tumour of posterior wall of nasopharynx
- Malignant tumour of adenoid
- Primary undifferentiated carcinoma of nasopharynx
- Undifferentiated carcinoma of nasopharynx
- Malignant tumor of adenoid
- Malignant tumor of pharyngeal tonsil
- Primary squamous cell carcinoma of adenoid
- Primary squamous cell carcinoma of pharyngeal tonsil
- Malignant tumour of pharyngeal tonsil
- Primary malignant neoplasm of Waldeyer's ring
- Malignant tumour of nasopharyngeal tonsil
- Neoplasm of adenoid
- Tumor of adenoid
- Malignant neoplasm of adenoid
- Primary squamous cell carcinoma of Waldeyer ring
- Malignant tumor of posterior wall of nasopharynx
- Squamous cell carcinoma of posterior wall of nasopharynx
- Primary malignant neoplasm of posterior wall of nasopharynx
- Primary malignant neoplasm of Waldeyer ring
Frequently Asked Questions
What is the ICD-10 code for malignant neoplasm of posterior wall of nasopharynx?
The ICD-10-CM code for malignant neoplasm of posterior wall of nasopharynx is C11.1. The full clinical description is "Malignant neoplasm of posterior wall of nasopharynx". C11.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code C11.1 mean?
ICD-10-CM code C11.1 represents “Malignant neoplasm of posterior wall of nasopharynx”. It is classified under Chapter 2: Neoplasms and is a billable/specific code that can be used on a claim.
Is C11.1 a billable code?
Yes, C11.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is C11.1 in?
C11.1 is in Chapter 2: Neoplasms (codes C00-D49).
Are additional codes required with C11.1?
Yes, when using C11.1, also report: ; exposure to environmental tobacco smoke (Z77.22); exposure to tobacco smoke in the perinatal period (P96.81); history of tobacco dependence (Z87.891); occupational exposure to environmental tobacco smoke (Z57.31); tobacco dependence (F17.-); tobacco use (Z72.0).
What SNOMED CT codes does C11.1 map to?
C11.1 maps to 14 SNOMED CT concepts: 1010656004, 187694000, 187693006, 127228008, 94144008, and 9 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for C11.1?
C11.1 is linked to 2 UMLS Concept Unique Identifiers: C0153394, C0345653. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does C11.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like malignant neoplasm of posterior wall of nasopharynx affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of C11.1?
C11.1 maps to the ICD-11 code: 2B6B.Z (Malignant neoplasms of nasopharynx, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.