ICD-10-CM J45: Asthma

ICD-10-CM Diagnosis Code (2025)

Official Description for J45

Asthma

Coding Notes & Guidelines for J45

Includes Notes
  • 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
Excludes1: Not Coded Here
  • detergent asthma (J69.8)
  • miner's asthma (J60)
  • wheezing NOS (R06.2)
  • wood asthma (J67.8)
Excludes2: Not Included Here
  • 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)
Excludes2: Not Included Here

lung diseases due to external agents (J60-J70)

Use Additional Code
  • 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)
Inclusion Terms

Mild intermittent asthma NOS

Inclusion Terms

Mild persistent asthma NOS

Inclusion Terms

Moderate persistent asthma NOS

Inclusion Terms

Severe persistent asthma NOS

Inclusion Terms
  • Asthmatic bronchitis NOS
  • Childhood asthma NOS
  • Late onset asthma
Inclusion Terms

Asthma NOS

Child Codes (More Specific Codes for J45):

J45.2 - Mild intermittent asthma J45.20 - Mild intermittent asthma, uncomplicated J45.21 - Mild intermittent asthma with (acute) exacerbation J45.22 - Mild intermittent asthma with status asthmaticus J45.3 - Mild persistent asthma J45.30 - Mild persistent asthma, uncomplicated J45.31 - Mild persistent asthma with (acute) exacerbation J45.32 - Mild persistent asthma with status asthmaticus J45.4 - Moderate persistent asthma J45.40 - Moderate persistent asthma, uncomplicated J45.41 - Moderate persistent asthma with (acute) exacerbation J45.42 - Moderate persistent asthma with status asthmaticus J45.5 - Severe persistent asthma J45.50 - Severe persistent asthma, uncomplicated J45.51 - Severe persistent asthma with (acute) exacerbation J45.52 - Severe persistent asthma with status asthmaticus J45.9 - Other and unspecified asthma J45.90 - Unspecified asthma J45.901 - Unspecified asthma with (acute) exacerbation J45.902 - Unspecified asthma with status asthmaticus J45.909 - Unspecified asthma, uncomplicated J45.99 - Other asthma J45.990 - Exercise induced bronchospasm J45.991 - Cough variant asthma J45.998 - Other asthma

About ICD-10-CM Code J45 (Asthma)

ICD-10-CM code J45 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM J45 became effective on October 1, 2024.

This page provides detailed information about J45 - Asthma. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Asthma.