Malignant neoplasm of nasal cavities

This code signifies a primary cancerous tumor originating within the nasal cavities. This includes malignancies affecting the nasal septum, turbinates, and the walls of the nasal passages. It represents a confirmed diagnosis of a malignant neoplasm in this specific anatomical site.

Use this code when documentation clearly states a primary malignant neoplasm of the nasal cavity. This diagnosis is typically supported by pathology reports confirming malignancy and the specific anatomical site. It applies to cases of squamous cell carcinoma, adenocarcinoma, or other primary malignant tumors of the nasal cavities.

• Ensure the documentation specifies "malignant" and "nasal cavity" to differentiate from benign or uncertain neoplasms.
• Do not use for secondary metastatic lesions to the nasal cavity; those require a code for the primary site and a secondary malignancy code.
• Consider additional codes for laterality (if applicable and documented) or specific histological types if available in the documentation.