2026 ICD-10-CM Diagnosis Code C02Malignant neoplasm of other and unspecified parts of tongue

ICD-10-CM Codes›C00–D49›C00-C14›C02

ICD-10-CM C02
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C02 is a non-billable ICD-10-CM category code for malignant neoplasm of other and unspecified parts of tongue, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C02.0, C02.1, C02.2, and C02.3.

Code Identity

ICD-10-CM Code
C02
Billable Status
No — Non-Billable Category
Code Describes
Malignant neoplasm of other and unspecified parts of tongue
Short Description
Malignant neoplasm of other and unspecified parts of tongue
Same as the full description in the CMS dataset.
Chapter
C00-C14
Malignant neoplasms of lip, oral cavity and pharynx

Code Classification

ChapterC00–D49Neoplasms
SectionC00-C14Malignant neoplasms of lip, oral cavity and pharynx
CategoryC02Malignant neoplasm of other and unspecified parts of tongue
This CodeC02Malignant neoplasm of other and unspecified parts of tongue

Specific Coding for Malignant neoplasm of other and unspecified parts of tongueOverview

Non-specific codes like C02 require more characters. Use one of these billable codes instead:

  • Use C02.0 for Malignant neoplasm of dorsal surface of tongue

  • Use C02.1 for Malignant neoplasm of border of tongue

  • Use C02.2 for Malignant neoplasm of ventral surface of tongue

  • Use C02.3 for Malignant neoplasm of anterior two-thirds of tongue, part unspecified

  • Use C02.4 for Malignant neoplasm of lingual tonsil

  • Use C02.8 for Malignant neoplasm of overlapping sites of tongue

  • Use C02.9 for Malignant neoplasm of tongue, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code to identify:
  • alcohol abuse and dependence F10
  • history of tobacco dependence Z87.891
  • tobacco dependence F17
  • tobacco use Z72.0

Patient EducationClinical

Oral Cancer

Oral cancer is cancer of the mouth. It is a type of head and neck cancer. Most oral cancers are squamous cell cancers. They begin in the flat cells that cover the surfaces of your mouth, tongue, and lips. The cancer cells may spread into deeper tissue as the cancer grows.

The full article covers:

  • What is oral cancer?
  • Who is more likely to develop oral cancer?
  • What are the symptoms of oral cancer?
  • How is oral cancer diagnosed?
  • What are the treatments for oral cancer?
  • Can oral cancer be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C02Overview

Is C02 (Malignant neoplasm of other and unspecified parts of tongue) a billable code?

No. This is a category header that groups the codes for malignant neoplasm of other and unspecified parts of tongue, and headers cannot be submitted on claims. Claims for malignant neoplasm of other and unspecified parts of tongue need a more specific code from this category, such as C02.0, C02.1, and C02.2.