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J42

✓ Billable

Unspecified chronic bronchitis

Diseases of the respiratory system (J00-J99)

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Also Known As

Chronic bronchitis NOSChronic tracheitisChronic tracheobronchitis

📋 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 J42

  • • bronchiolitis obliterans and bronchiolitis obliterans syndrome (J44.81)
  • • chronic asthmatic bronchitis (J44.-)
  • • chronic bronchitis with airways obstruction (J44.-)
  • • chronic emphysematous bronchitis (J44.-)
  • • chronic obstructive pulmonary disease NOS (J44.9)
  • • simple and mucopurulent chronic bronchitis (J41.-)

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Code Information

CodeJ42
BillableYes
CategoryDiseases of the respiratory system (J00-J99)
Excludes16 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)