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C34.1

C34.1: Malignant neoplasm of upper lobe, bronchus or lung

Non-billable headerICD-10-CM

C34.1 is a non-billable header ICD-10-CM code for malignant neoplasm of upper lobe, bronchus or lung. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above C34.1

A category’s note binds every code beneath it.

Written on C34: Malignant neoplasm of bronchus and lung

  • Kaposi's sarcoma of lung (C46.5-)
  • malignant carcinoid tumor of the bronchus and lung (C7A.090)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead C34.1

3 child codes. Green means billable.

Other codes under C34

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.