C09 - Malignant neoplasm of tonsil

Version 2023
ICD-10:C09
Short Description:Malignant neoplasm of tonsil
Long Description:Malignant neoplasm of tonsil
Status: Not Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Neoplasms (C00–D48)
    • Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
      • Malignant neoplasm of tonsil (C09)

C09 is a non-specific and non-billable ICD-10 code code, consider using a code with a higher level of specificity for a diagnosis of malignant neoplasm of tonsil. The code is not specific and is NOT valid for the year 2023 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Malignant neoplasm of tonsil

Non-specific codes like C09 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for malignant neoplasm of tonsil:

  • BILLABLE CODE - Use C09.0 for Malignant neoplasm of tonsillar fossa
  • BILLABLE CODE - Use C09.1 for Malignant neoplasm of tonsillar pillar (anterior) (posterior)
  • BILLABLE CODE - Use C09.8 for Malignant neoplasm of overlapping sites of tonsil
  • BILLABLE CODE - Use C09.9 for Malignant neoplasm of tonsil, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:


Use Additional Code

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.

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

Patient Education


Throat Cancer

Throat cancer is a type of head and neck cancer. Throat cancer has different names, depending on which part of the throat is affected. The different parts of your throat are called the oropharynx, the hypopharynx, the nasopharynx, and the larynx, or voice box.

The main risk factors for throat cancer are using tobacco heavy drinking. Certain types of throat cancer also have other risk factors. For example, having HPV is a risk factor for oropharyngeal cancer.

Symptoms of throat cancer may include:

To diagnose throat cancers, doctors may do a physical exam and history, imaging tests, and a biopsy. You may also need other tests, depending on the type of cancer. Treatments include surgery, radiation therapy, and chemotherapy. Treatment for some types of throat cancer may also include targeted therapy. Targeted therapy uses drugs or other substances that attack specific cancer cells with less harm to normal cells.

NIH: National Cancer Institute


[Learn More in MedlinePlus]

Code History