C33 is the authoritative medical code for Malignant neoplasm of trachea. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of trachea (ICD-10-CM C33), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Malignant neoplasm of trachea is a billable ICD-10-CM diagnosis code C33. Includes: malignant neoplasm of middle ear. Excludes1 (not coded here): mesothelioma C45.-. Use additional code: code to identify:; exposure to environmental tobacco smoke Z77.22; exposure to tobacco smoke in the perinatal period P96.81; history of tobacco dependence Z87.891; occupational exposure to environmental tobacco smoke Z57.31; tobacco dependence F17.-; tobacco use Z72.0.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C33 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- malignant neoplasm of middle ear
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code to identify:
- exposure to environmental tobacco smoke Z77.22
- exposure to tobacco smoke in the perinatal period P96.81
- history of tobacco dependence Z87.891
- occupational exposure to environmental tobacco smoke Z57.31
- tobacco dependence F17.-
- tobacco use Z72.0
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with C33?
Per Excludes1 instructions, C33 must not be reported with: mesothelioma (C45.-).
Is an additional code needed with C33?
Use additional code(s) to specify: code to identify:; exposure to environmental tobacco smoke (Z77.22); exposure to tobacco smoke in the perinatal period (P96.81); history of tobacco dependence (Z87.891).
Neoplasm Table Sites (3)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), trachea — Malignant, Primary
- Neoplasm, neoplastic, trachea (cartilage) (mucosa) — Malignant, Primary
- Neoplasm, neoplastic, windpipe — Malignant, Primary
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code C30
Malignant neoplasm of nasal cavity and middle ear
ICD Code C38
Malignant neoplasm of heart, mediastinum and pleura