Malignant neoplasm of upper gum

This code signifies a primary cancerous tumor originating in the gingival tissue of the maxilla. It specifically refers to malignant neoplasms affecting the upper gum line.

This code is appropriate when documentation clearly indicates a primary malignant neoplasm of the upper gum. Pathological confirmation of malignancy and specific anatomical site (upper gum) are essential for accurate assignment.

• Differentiate from malignant neoplasms of other oral cavity sites, such as the hard palate or buccal mucosa.
• Ensure the documentation specifies "upper gum" to avoid confusion with lower gum involvement.
• Always sequence this code as the primary diagnosis when it represents the reason for the encounter or treatment.