Malignant neoplasm of base of tongue (C01) ICD-10-CM
The C01 code range covers malignant neoplasm of base of tongue with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Malignant neoplasm of dorsal surface of base of tongue
- Malignant neoplasm of fixed part of tongue NOS
- Malignant neoplasm of posterior third of tongue
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 C01 Range 1 codes · 1 billable
- C01 Malignant neoplasm of base of tongue
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C01 range.
Malignant Posterior Tongue Neoplasm
A primary or metastatic malignant neoplasm that affects the base of the tongue.
About the C01 Code Range
A malignant tumor at the base of the tongue can begin there or spread there from another site. C01 identifies this location within the group of malignant neoplasms of the lip, oral cavity, and pharynx.
Questions About This Page
How many billable codes are in the C01 range?
Of the 1 codes in this range, 1 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 C01 range classify?
The range classifies malignant neoplasm of base of tongue. 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.
