C33 – Malignant neoplasm of trachea

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of respiratory and intrathoracic organs

Billable code

ICD-10-CM code C33
Code
C33 (claims format: C33)
Description
Malignant neoplasm of trachea
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
2. Neoplasms (C00-D49)
Block
C30-C39 Malignant neoplasms of respiratory and intrathoracic organs

Notes for C33

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)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block C30-C39

Includes:
  • malignant neoplasm of middle ear
Excludes1 (not coded here):
  • mesothelioma (C45.-)

Frequently asked questions

What is ICD-10 code C33?

C33 is the ICD-10-CM code for malignant neoplasm of trachea, in the block C30-C39 (Malignant neoplasms of respiratory and intrathoracic organs).

Is C33 a billable code?

Yes. C33 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.