C34.30: Malignant neoplasm of lower lobe, unspecified bronchus or lung
C34.30 is the billable ICD-10-CM diagnosis code for Malignant neoplasm of lower lobe, unspecified bronchus or lung. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code C34.30?
C34.30 is the ICD-10-CM diagnosis code for Malignant neoplasm of lower lobe, unspecified bronchus or lung. It belongs to category C34 (Malignant neoplasm of bronchus and lung).
Is C34.30 a billable code?
Yes. C34.30 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does C34.30 belong to?
C34.30 is part of ICD-10-CM category C34 — Malignant neoplasm of bronchus and lung, which has 32 billable codes.
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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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