C33
Billable codeMalignant neoplasm of trachea
The ICD-10 code for malignant neoplasm of trachea is C33.
Clinical notes
Use additional code
This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- C30Malignant neoplasm of nasal cavity and middle earnon-billable header
- C31Malignant neoplasm of accessory sinusesnon-billable header
- C32Malignant neoplasm of larynxnon-billable header
- C34Malignant neoplasm of bronchus and lungnon-billable header
- C37Malignant neoplasm of thymus
- C38Malignant neoplasm of heart, mediastinum and pleuranon-billable header
- C39Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organsnon-billable header
- C33Malignant neoplasm of trachea
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 1620
Associated MS-DRGs
C33 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.