Malignant neoplasm of lower gum

This code identifies a primary malignant tumor originating in the gingival tissue of the mandible. It specifically refers to cancerous growth affecting the lower gum line, distinct from other oral cavity sites.

Apply this code when documentation confirms a primary malignant neoplasm of the lower gingiva. This includes squamous cell carcinoma, adenocarcinoma, or other primary malignant histological types affecting the mandibular gum. Supporting documentation should clearly specify the lower gum as the primary site.

• Differentiate carefully between lower gum and other oral cavity sites like the floor of mouth or buccal mucosa.
• Ensure the pathology report confirms malignancy and the specific anatomical site.
• Sequence this code as the primary diagnosis when it is the reason for the encounter or treatment.