Malignant neoplasm of trachea (C33) ICD-10-CM
The C33 code range covers malignant neoplasm of trachea with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Codes in the C33 Range 1 codes · 1 billable
- C33 Malignant neoplasm of trachea
About the C33 Code Range
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.
Questions About This Page
How many billable codes are in the C33 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the C33 range classify?
The range classifies malignant neoplasm of trachea. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
