C34 ICD-10-CM Code: Malignant neoplasm of bronchus and lung
A clear reference for the official code description, hierarchy, and related coding information from the April 2026 U.S. release.
Code definition
Official description
C34Malignant neoplasm of bronchus and lung
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where C34 sits
- 1
Chapter 2
Neoplasms (C00-D49)
- 2
Section
Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)
- 3
Category C34
Malignant neoplasm of bronchus and lung
- 4
Code C34
Malignant neoplasm of bronchus and lung
More specific choices
Codes under C34
C34 is a non-billable category. Choose the child code that best matches the documented diagnosis.
C34.0Malignant neoplasm of main bronchus
C34.1Malignant neoplasm of upper lobe, bronchus or lung
C34.2Malignant neoplasm of middle lobe, bronchus or lung
C34.3Malignant neoplasm of lower lobe, bronchus or lung
C34.8Malignant neoplasm of overlapping sites of bronchus and lung
C34.9Malignant neoplasm of unspecified part of bronchus or lung
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for C34.
Code first
No “code first” instruction is listed for C34.
Use additional code
No “use additional code” instruction is listed for C34.
Excludes1
Conditions that should not be reported together with this code.
- Kaposi's sarcoma of lung (C46.5-)
- malignant carcinoid tumor of the bronchus and lung (C7A.090)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for C34.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code C34 mean?
C34 is the April 2026 U.S. ICD-10-CM code for “Malignant neoplasm of bronchus and lung.”
Is C34 a billable or specific ICD-10-CM code?
No. C34 has more specific child codes in the April 2026 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is C34 located in ICD-10-CM?
C34 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of respiratory and intrathoracic organs (C30-C39) (C30–C39), under category C34, Malignant neoplasm of bronchus and lung.
What coding notes are listed for C34?
No inclusion terms are listed for C34 in this reference record. No code-first instruction is listed. Excludes1 notes: Kaposi's sarcoma of lung (C46.5-); malignant carcinoid tumor of the bronchus and lung (C7A.090). No Excludes2 note is listed.
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