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 | — |
| C34.0 | Malignant neoplasm of main bronchus | — |
| C34.00 | Malignant neoplasm of unspecified main bronchus | ✓ |
| C34.00 | Malignant neoplasm of unspecified main bronchus | ✓ |
| C34.01 | Malignant neoplasm of right main bronchus | ✓ |
| C34.01 | Malignant neoplasm of right main bronchus | ✓ |
| C34.1 | Malignant neoplasm of upper lobe, bronchus or lung | — |
| C34.1 | Malignant neoplasm of upper lobe, bronchus or lung | — |
| C34.02 | Malignant neoplasm of left main bronchus | ✓ |
| C34.02 | Malignant neoplasm of left main bronchus | ✓ |
| C34.2 | Malignant neoplasm of middle lobe, bronchus or lung | ✓ |
| C34.2 | Malignant neoplasm of middle lobe, bronchus or lung | ✓ |
| C34.3 | Malignant neoplasm of lower 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 | — |
| C34.8 | Malignant neoplasm of overlapping sites of bronchus and lung | — |
| C34.9 | Malignant neoplasm of unspecified part of bronchus or lung | — |
| C34.9 | Malignant neoplasm of unspecified part of bronchus or lung | — |
| C34.10 | Malignant neoplasm of upper lobe, unspecified 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 | ✓ |
| C34.11 | Malignant neoplasm of upper lobe, right bronchus or lung | ✓ |
| C34.12 | Malignant neoplasm of upper lobe, left 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 | ✓ |
| C34.30 | Malignant neoplasm of lower lobe, unspecified bronchus or lung | ✓ |
| C34.31 | Malignant neoplasm of lower lobe, right 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 | ✓ |
| C34.32 | Malignant neoplasm of lower lobe, left bronchus or lung | ✓ |
| C34.80 | Malignant neoplasm of overlapping sites of unspecified bronchus and 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 | ✓ |
| C34.81 | Malignant neoplasm of overlapping sites of right bronchus and lung | ✓ |
| C34.82 | Malignant neoplasm of overlapping sites of left 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 | ✓ |
| C34.90 | Malignant neoplasm of unspecified part of unspecified bronchus or lung | ✓ |
| C34.91 | Malignant neoplasm of unspecified part of right 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 | ✓ |
| C34.92 | Malignant neoplasm of unspecified part of left bronchus or lung | ✓ |
Frequently asked questions
What is ICD-10-CM code C34?
C34 is an ICD-10-CM category covering Malignant neoplasm of bronchus and lung. It contains 42 more specific diagnosis codes, 32 of which are billable.
Is C34 a billable code?
No — C34 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example C34.0 — Malignant neoplasm of main bronchus). 32 of the 42 codes under C34 are billable.
What codes fall under C34?
C34 includes C34.0, C34.0, C34.00, C34.00, C34.01, plus 37 more. See the full list with descriptions and billable status above.
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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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