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J44.9

✓ Billable

Chronic obstructive pulmonary disease, unspecified

Diseases of the respiratory system (J00-J99)

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Also Known As

Chronic obstructive airway disease NOSChronic obstructive lung disease NOS

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • lung diseases due to external agents (J60-J70)

⚠️ Excludes2

inherited from J44

Rules from parent category J44: Other chronic obstructive pulmonary disease

  • • bronchiectasis (J47.-)
  • • chronic bronchitis NOS (J42)
  • • chronic simple and mucopurulent bronchitis (J41.-)
  • • chronic tracheitis (J42)
  • • chronic tracheobronchitis (J42)
  • • emphysema without chronic bronchitis (J43.-)

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Code Information

CodeJ44.9
BillableYes
ParentJ44
CategoryDiseases of the respiratory system (J00-J99)
Excludes10 rule(s)
Excludes27 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)