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  3. Ch. C00-D49
  4. Sec. C30-C39
  5. Category C34
Category C34

Malignant neoplasm of bronchus and lung

Clinical Classification Guidelines

Specific Diagnosis Codes

Malignant neoplasm of main bronchus
C34.0
Malignant neoplasm of unspecified main bronchus
C34.00
Malignant neoplasm of right main bronchus
C34.01
Malignant neoplasm of left main bronchus
C34.02
Malignant neoplasm of upper lobe, bronchus or lung
C34.1
Malignant neoplasm of upper lobe, unspecified bronchus or lung
C34.10
Malignant neoplasm of upper lobe, right bronchus or lung
C34.11
Malignant neoplasm of upper lobe, left bronchus or lung
C34.12
Malignant neoplasm of middle lobe, bronchus or lung
C34.2
Malignant neoplasm of lower lobe, bronchus or lung
C34.3
Malignant neoplasm of lower lobe, unspecified bronchus or lung
C34.30
Malignant neoplasm of lower lobe, right bronchus or lung
C34.31
Malignant neoplasm of lower lobe, left bronchus or lung
C34.32
Malignant neoplasm of overlapping sites of bronchus and lung
C34.8
Malignant neoplasm of overlapping sites of unspecified bronchus and lung
C34.80
Malignant neoplasm of overlapping sites of right bronchus and lung
C34.81
Malignant neoplasm of overlapping sites of left bronchus and lung
C34.82
Malignant neoplasm of unspecified part of bronchus or lung
C34.9
Malignant neoplasm of unspecified part of unspecified bronchus or lung
C34.90
Malignant neoplasm of unspecified part of right bronchus or lung
C34.91
Malignant neoplasm of unspecified part of left bronchus or lung
C34.92
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Data updated for October 2025 release.

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