Non-Billable / Non-Specific Code
ICD-10-CM C11 is the diagnosis code for Malignant neoplasm of nasopharynx. This code falls under the section "Malignant neoplasms of lip, oral cavity and pharynx" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where C11 sits in the ICD-10-CM classification helps ensure proper coding:
No, C11 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
C11 is the ICD-10-CM diagnosis code for "Malignant neoplasm of nasopharynx". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
C11 is located in Section C00-C14 — "Malignant neoplasms of lip, oral cavity and pharynx" within Chapter 2 of the ICD-10-CM Tabular List.
C11 has 6 sub-code(s) that provide more specific detail: C11.0, C11.1, C11.2, C11.3, C11.8 and more.
Use C11 when the patients documented diagnosis matches "Malignant neoplasm of nasopharynx" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Malignant neoplasm of nasopharynx is C11.
No, C11 is non-billable. Use a more specific sub-code for primary diagnosis billing.
C11 is in Chapter 2 of the ICD-10-CM Tabular List.
Yes, C11 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.