Malignant neoplasm of trachea (C33)

The ICD-10 code C33 is specifically used to identify malignant neoplasms (cancers) of the trachea. This includes all primary malignant tumors arising from the trachea's tissues and lining.

This code covers a wide variety of tracheal cancers, such as squamous cell carcinoma, adenoid cystic carcinoma, adenocarcinoma, and several rare subtypes like verrucous carcinoma or spindle cell carcinoma. The synonyms associated with ICD-10 code C33; for example, "malignant tumor of trachea," "primary adenoid cystic carcinoma of trachea," or "primary mucinous adenocarcinoma of trachea"; help clarify that this code applies broadly to different malignant growths originating in the trachea. Medical coders use this code to document cases involving cancers localized to the trachea, including those involving the mucosa, cartilage, or carina regions. Understanding these synonym terms ensures accurate coding when a diagnosis mentions specific tumor types but the coding must reflect the malignant neoplasm of the trachea specifically. This code supports precise classification for respiratory tract cancers and is essential when coding primary tracheal malignancies.