Malignant neoplasm of laryngeal cartilages

This code signifies a cancerous tumor originating in the cartilaginous structures of the larynx, such as the thyroid, cricoid, or arytenoid cartilages. This malignancy can impair vocal function, breathing, and swallowing due to its location within the voice box.

Apply this code when documentation explicitly states a primary malignant neoplasm of the laryngeal cartilages. This diagnosis is typically confirmed by biopsy and pathology reports. It is appropriate for initial diagnosis, treatment, and follow-up care related to this specific site of laryngeal cancer.

• Differentiate from malignant neoplasms of other laryngeal sites (e.g., glottis, supraglottis) which have distinct codes.
• Ensure the documentation specifies "cartilage" as the primary site, not just "larynx" generally.
• Sequence according to official coding guidelines, often as the primary diagnosis for the cancer treatment encounter.