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J45

⚠ Non-billable (Header)

Asthma

Diseases of the respiratory system (J00-J99)

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

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✅ Includes

  • • allergic (predominantly) asthma
  • • allergic bronchitis NOS
  • • allergic rhinitis with asthma
  • • atopic asthma
  • • extrinsic allergic asthma
  • • hay fever with asthma
  • • idiosyncratic asthma
  • • intrinsic nonallergic asthma
  • • nonallergic asthma

📋 Code Instructions

  • • code to identify:
  • • eosinophilic asthma (J82.83)
  • • 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 J45

  • • detergent asthma (J69.8)
  • • miner's asthma (J60)
  • • wheezing NOS (R06.2)
  • • wood asthma (J67.8)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • asthma with chronic obstructive pulmonary disease (J44.89)
  • • chronic asthmatic (obstructive) bronchitis (J44.89)
  • • chronic obstructive asthma (J44.89)
  • • other specified chronic obstructive pulmonary disease (J44.89)

Child Codes (5)

J45.2Mild intermittent asthmaJ45.3Mild persistent asthmaJ45.4Moderate persistent asthmaJ45.5Severe persistent asthmaJ45.9Other and unspecified asthma

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Code Information

CodeJ45
BillableNo — Header code
CategoryDiseases of the respiratory system (J00-J99)
Excludes14 rule(s)
Excludes24 note(s)
Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)