Malignant neoplasm of vestibule of mouth

This code identifies a primary cancerous tumor originating in the vestibule of the mouth. The vestibule is the area between the teeth and the lips/cheeks. This malignancy can involve various tissues within this specific oral cavity region.

This code is appropriate for documented diagnoses of squamous cell carcinoma, adenocarcinoma, or other malignant neoplasms confirmed to be located specifically in the oral vestibule. Documentation should clearly specify the primary site as the vestibule, distinguishing it from other oral cavity subsites.

• Ensure the documentation specifies "vestibule of mouth" and not a more general oral cavity site.
• Distinguish from benign neoplasms or carcinoma in situ of the vestibule, which have different codes.
• Review pathology reports for definitive diagnosis and primary site confirmation.