Malignant neoplasm of other and unspecified parts of mouth (C06)

The ICD-10 code C06 and its subcodes classify malignant neoplasms occurring in various specific and unspecified parts of the mouth. These codes are essential for accurately identifying and documenting cancers in locations like the cheek mucosa, vestibule, and retromolar area.

This ICD-10 code for malignant neoplasm of other and unspecified parts of mouth includes subcategories such as C06.0 for cheek mucosa tumors, often referred to by synonyms like squamous cell carcinoma of buccal mucosa or carcinoma of cheek. Code C06.1 covers cancers of the vestibule of mouth, which can be described using terms like primary carcinoma of upper or lower buccal sulcus or malignant tumor of the vestibule. The C06.2 code is for malignancies in the retromolar area, also known as carcinoma of the retromolar region. Unspecified and overlapping site tumors fall under C06.8, C06.80, and C06.89. Meanwhile, C06.9 is used for malignant neoplasms of the mouth when the exact location is unknown, with related terms including squamous cell carcinoma of mouth, neoplasm of minor salivary gland, and verrucous carcinoma of oral cavity. These codes help healthcare professionals and coders precisely document varied mouth cancers for treatment, research, and billing.

Instructional Notations

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.

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