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C34

⚠ Non-billable (Header)

Malignant neoplasm of bronchus and lung

Neoplasms (C00-D49)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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📋 Code Instructions

  • • code to identify:
  • • exposure to environmental tobacco smoke (Z77.22)
  • • exposure to tobacco smoke in the perinatal period (P96.81)
  • • history of tobacco dependence (Z87.891)
  • • occupational exposure to environmental tobacco smoke (Z57.31)
  • • tobacco dependence (F17.-)
  • • tobacco use (Z72.0)

❌ Excludes1

direct

Cannot be coded with C34

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

Child Codes (6)

C34.0Malignant neoplasm of main bronchusC34.1Malignant neoplasm of upper lobe, bronchus or lungC34.2Malignant neoplasm of middle lobe, bronchus or lungC34.3Malignant neoplasm of lower lobe, bronchus or lungC34.8Malignant neoplasm of overlapping sites of bronchus and lungC34.9Malignant neoplasm of unspecified part of bronchus or lung

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Code Information

CodeC34
BillableNo — Header code
CategoryNeoplasms (C00-D49)
Excludes12 rule(s)
Excludes20 note(s)
Child codes6

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)