Malignant neoplasm of nasopharynx (C11) ICD-10-CM
The C11 code range covers malignant neoplasm of nasopharynx with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Codes in the C11 Range 7 codes · 6 billable
- C11 Malignant neoplasm of nasopharynxNon-billable
- C11.0 Malignant neoplasm of superior wall of nasopharynx
- C11.1 Malignant neoplasm of posterior wall of nasopharynx
- C11.2 Malignant neoplasm of lateral wall of nasopharynx
- C11.3 Malignant neoplasm of anterior wall of nasopharynx
- C11.8 Malignant neoplasm of overlapping sites of nasopharynx
- C11.9 Malignant neoplasm of nasopharynx, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C11 range.
Malignant Nasopharyngeal Neoplasm
A primary or metastatic malignant neoplasm involving the nasopharynx.
About the C11 Code Range
Cancer in the nasopharynx, the part of the throat behind the nose, may start there or spread there from elsewhere.
C11 is divided by location within the nasopharynx: the upper wall (C11.0), back wall (C11.1), side wall (C11.2), or front wall (C11.3). Separate subdivisions identify overlapping sites (C11.8) and an unspecified site (C11.9).
Questions About This Page
How many billable codes are in the C11 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the C11 range classify?
The range classifies malignant neoplasm of nasopharynx. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
