C34
⚠ Non-billable
Malignant neoplasm of bronchus and lung
ICD-10-CM · FY2026 · Neoplasms
Code
C34
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Neoplasms
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code C34?
ICD-10-CM code C34 represents Malignant neoplasm of bronchus and lung. It is a non-billable header code requiring a more specific subcategory in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.
Is C34 billable?
No. C34 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is C34 in?
C34 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.
Related codes in the C34 category
C34.0
Malignant neoplasm of main bronchus
Non-billable
C34.1
Malignant neoplasm of upper lobe, bronchus or lung
Non-billable
C34.2
Malignant neoplasm of middle lobe, bronchus or lung
Billable
C34.3
Malignant neoplasm of lower lobe, bronchus or lung
Non-billable
C34.8
Malignant neoplasm of overlapping sites of bronchus and lung
Non-billable
C34.9
Malignant neoplasm of unspecified part of bronchus or lung
Non-billable
C34.00
Malignant neoplasm of unspecified main bronchus
Billable
C34.01
Malignant neoplasm of right main bronchus
Billable
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