C34: Malignant neoplasm of bronchus and lung

Codes under C34 (Malignant neoplasm of bronchus and lung). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
C34.0	Malignant neoplasm of main bronchus	—
C34.00	Malignant neoplasm of unspecified main bronchus	✓
C34.01	Malignant neoplasm of right main bronchus	✓
C34.1	Malignant neoplasm of upper lobe, bronchus or lung	—
C34.02	Malignant neoplasm of left main bronchus	✓
C34.2	Malignant neoplasm of middle lobe, bronchus or lung	✓
C34.3	Malignant neoplasm of lower lobe, bronchus or lung	—
C34.8	Malignant neoplasm of overlapping sites of bronchus and lung	—
C34.9	Malignant neoplasm of unspecified part of bronchus or lung	—
C34.10	Malignant neoplasm of upper lobe, unspecified bronchus or lung	✓
C34.11	Malignant neoplasm of upper lobe, right bronchus or lung	✓
C34.12	Malignant neoplasm of upper lobe, left bronchus or lung	✓
C34.30	Malignant neoplasm of lower lobe, unspecified bronchus or lung	✓
C34.31	Malignant neoplasm of lower lobe, right bronchus or lung	✓
C34.32	Malignant neoplasm of lower lobe, left bronchus or lung	✓
C34.80	Malignant neoplasm of overlapping sites of unspecified bronchus and lung	✓
C34.81	Malignant neoplasm of overlapping sites of right bronchus and lung	✓
C34.82	Malignant neoplasm of overlapping sites of left bronchus and lung	✓
C34.90	Malignant neoplasm of unspecified part of unspecified bronchus or lung	✓
C34.91	Malignant neoplasm of unspecified part of right bronchus or lung	✓
C34.92	Malignant neoplasm of unspecified part of left bronchus or lung	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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