C34.0 – Malignant neoplasm of main bronchus

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

Non-billable header

ICD-10-CM code C34.0
Code
C34.0 (claims format: C340)
Description
Malignant neoplasm of main bronchus
Billable
No – use a more specific code below
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
Parent codes
C34

Billable codes under C34.0

C34.0 is a header code and cannot be used on claims. Choose the most specific code:

Notes for C34.0

Applicable to:
  • Malignant neoplasm of carina
  • Malignant neoplasm of hilus (of lung)

Notes inherited from parent codes

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

C34 – Malignant neoplasm of bronchus and lung

Excludes1 (not coded here):
  • Kaposi's sarcoma of lung (C46.5-)
  • malignant carcinoid tumor of the bronchus and lung (C7A.090)
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)

Block C30-C39

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

Related codes in C34

Frequently asked questions

What is ICD-10 code C34.0?

C34.0 is the ICD-10-CM code for malignant neoplasm of main bronchus, in the block C30-C39 (Malignant neoplasms of respiratory and intrathoracic organs).

Is C34.0 a billable code?

No. C34.0 is a header code with more specific child codes; report one of the billable codes listed above.

What category does C34.0 belong to?

It belongs to category C34 – Malignant neoplasm of bronchus and lung.

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.