Non-Billable / Non-Specific Code
ICD-10-CM C09 is the diagnosis code for Malignant neoplasm of tonsil. This code falls under the section "Malignant neoplasms of lip, oral cavity and pharynx" within Chapter 2 â 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.
The following conditions are not included in C09. If the patient has both, code each condition separately:
Understanding where C09 sits in the ICD-10-CM classification helps ensure proper coding:
No, C09 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
C09 is the ICD-10-CM diagnosis code for "Malignant neoplasm of tonsil". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
C09 is located in Section C00-C14 â "Malignant neoplasms of lip, oral cavity and pharynx" within Chapter 2 of the ICD-10-CM Tabular List.
C09 has 4 sub-code(s) that provide more specific detail: C09.0, C09.1, C09.8, C09.9.
Use C09 when the patients documented diagnosis matches "Malignant neoplasm of tonsil" 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 tonsil is C09.
No, C09 is non-billable. Use a more specific sub-code for primary diagnosis billing.
C09 is in Chapter 2 of the ICD-10-CM Tabular List.
Yes, C09 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.