J45: Asthma – 2026 ICD-10-CM Codes

J45 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Asthma.

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

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)

Type 1 excludes

Detergent asthma (J69.8)
Miner's asthma (J60)
Wheezing NOS (R06.2)
Wood asthma (J67.8)

Type 2 excludes

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)

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Codes

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Versions

2026
No changes
2025
Code changed
- Type 2 excludes
  ~~asthma with chronic obstructive pulmonary disease (J44.9)~~
  ~~chronic asthmatic (obstructive) bronchitis (J44.9)~~
  ~~chronic obstructive asthma (J44.9)~~
  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)
2024
No changes
2023
No changes
2022
Code changed
- Type 1 excludes
  ~~detergent asthma (J69.8)~~
  ~~eosinophilic asthma (J82)~~
  ~~miner's asthma (J60)~~
  ~~wheezing NOS (R06.2)~~
  ~~wood asthma (J67.8)~~
  detergent asthma (J69.8)
  miner's asthma (J60)
  wheezing NOS (R06.2)
  wood asthma (J67.8)
2021
Code changed
- Use additional code
  ~~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)~~
  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)
2020
No changes
2019
No changes
2018
Code changed
- Type 1 excludes
  ~~detergent asthma (J69.8)~~
  ~~eosinophilic asthma (J82)~~
  ~~lung diseases due to external agents (J60-J70)~~
  ~~miner's asthma (J60)~~
  ~~wheezing NOS (R06.2)~~
  ~~wood asthma (J67.8)~~
  detergent asthma (J69.8)
  eosinophilic asthma (J82)
  miner's asthma (J60)
  wheezing NOS (R06.2)
  wood asthma (J67.8)
2017
Code changed
- Use additional code
  ~~code to identify:~~
  ~~exposure to environmental tobacco smoke (Z77.22)~~
  ~~exposure to tobacco smoke in the perinatal period (P96.81)~~
  ~~history of tobacco use (Z87.891)~~
  ~~occupational exposure to environmental tobacco smoke (Z57.31)~~
  ~~tobacco dependence (F17.-)~~
  ~~tobacco use (Z72.0)~~
  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)
2016
New code

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Versions

2026

No changes

2025

Code changed

Type 2 excludes
- - ~~asthma with chronic obstructive pulmonary disease (J44.9)~~
  - ~~chronic asthmatic (obstructive) bronchitis (J44.9)~~
  - ~~chronic obstructive asthma (J44.9)~~
- - 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)

2024

No changes

2023

No changes

2022

Code changed

Type 1 excludes
- - ~~detergent asthma (J69.8)~~
  - ~~eosinophilic asthma (J82)~~
  - ~~miner's asthma (J60)~~
  - ~~wheezing NOS (R06.2)~~
  - ~~wood asthma (J67.8)~~
- - detergent asthma (J69.8)
  - miner's asthma (J60)
  - wheezing NOS (R06.2)
  - wood asthma (J67.8)

2021

Code changed

Use additional code
- - ~~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)~~
- - 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)

2020

No changes

2019

No changes

2018

Code changed

Type 1 excludes
- - ~~detergent asthma (J69.8)~~
  - ~~eosinophilic asthma (J82)~~
  - ~~lung diseases due to external agents (J60-J70)~~
  - ~~miner's asthma (J60)~~
  - ~~wheezing NOS (R06.2)~~
  - ~~wood asthma (J67.8)~~
- - detergent asthma (J69.8)
  - eosinophilic asthma (J82)
  - miner's asthma (J60)
  - wheezing NOS (R06.2)
  - wood asthma (J67.8)

2017

Code changed

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

2016

New code

Includes

Use additional code

Type 1 excludes

Type 2 excludes

Codes

J45.2

J45.3

J45.4

J45.5

J45.9

Versions

2026

2025

Type 2 excludes

2024

2023

2022

Type 1 excludes

2021

Use additional code

2020

2019

2018

Type 1 excludes

2017

Use additional code

2016

Includes

Use additional code

Type 1 excludes

Type 2 excludes

Codes

J45.2

J45.3

J45.4

J45.5

J45.9

Versions

2026

2025

Type 2 excludes

2024

2023

2022

Type 1 excludes

2021

Use additional code

2020

2019

2018

Type 1 excludes

2017

Use additional code

2016