J45UpcomingCategory · further specificity required

Asthma

Code-level instructions

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)

Excludes 1

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

Chapters 10 · Inherited instructions

Use additional code

code, where applicable, 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)

J40-J4B · Inherited instructions

Excludes 1

bronchitis due to chemicals, gases, fumes and vapors (J68.0)

Excludes 2 · 14

J45

Excludes 2

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)

Chapters 10 · Diseases of the respiratory system (J00-J99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
smoke inhalation (T59.81-)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

J40-J4B · Chronic lower respiratory diseases (J40-J4B)

Excludes 2

cystic fibrosis (E84.-)

More specific codes

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

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

First observed · 2015-10-01

Code history

Latest recorded change · FY2024 · 04-01

ChangedUnchanged

FY2024 · 04-01

Effective from 2024-04-01

Code-level rules changed

Asthma

Category — select a more specific code

CDC/NCHS · FY2024 · 04-01

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	Code-level rules changed · Inherited rules changed
FY2018	2017-10-01	Code-level rules changed
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	Code-level rules changed
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	Code-level rules changed
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	Code-level rules changed
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

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

Excludes 1

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

Excludes 2

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)

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)

Inherited instructions

Chapters 10 · Diseases of the respiratory system (J00-J99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
smoke inhalation (T59.81-)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use additional code

code, where applicable, 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)

Note

When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).

J40-J4B · Chronic lower respiratory diseases (J40-J4B)

Excludes 1

bronchitis due to chemicals, gases, fumes and vapors (J68.0)

Excludes 2

cystic fibrosis (E84.-)

More specific codes

J45.2Mild intermittent asthmaCategory · further specificity required J45.3Mild persistent asthmaCategory · further specificity required J45.4Moderate persistent asthmaCategory · further specificity required J45.5Severe persistent asthmaCategory · further specificity required J45.9Other and unspecified asthmaCategory · further specificity required

Related codes

Official titles and instructions are preserved in their source language. Official sources ↗

References from other codes (5)

F54 · Psychological and behavioral factors associated with disorders or diseases classified elsewhere

Code first · asthma (J45.-)

J44 · Other chronic obstructive pulmonary disease

Code also · type of asthma, if applicable (J45.-)

J98.01 · Acute bronchospasm

Excludes 1 · asthma (J45.-)

R06.2 · Wheezing

Excludes 1 · Asthma (J45.-)

sections/J60-J70 · Lung diseases due to external agents (J60-J70)

Excludes 2 · asthma (J45.-)

J45UpcomingCategory · further specificity required

Asthma

Code-level instructions

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)

Excludes 1

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

Chapters 10 · Inherited instructions

Use additional code

code, where applicable, 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)

J40-J4B · Inherited instructions

Excludes 1

bronchitis due to chemicals, gases, fumes and vapors (J68.0)

Excludes 2 · 14

J45

Excludes 2

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)

Chapters 10 · Diseases of the respiratory system (J00-J99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
smoke inhalation (T59.81-)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

J40-J4B · Chronic lower respiratory diseases (J40-J4B)

Excludes 2

cystic fibrosis (E84.-)

More specific codes

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

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Official coding guidelines → · CMS ↗

First observed · 2015-10-01

Code history

Latest recorded change · FY2024 · 04-01

ChangedUnchanged

FY2024 · 04-01

Effective from 2024-04-01

Code-level rules changed

Asthma

Category — select a more specific code

CDC/NCHS · FY2024 · 04-01

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	Code-level rules changed · Inherited rules changed
FY2018	2017-10-01	Code-level rules changed
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	Code-level rules changed
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	Code-level rules changed
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	Code-level rules changed
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

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

Excludes 1

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

Excludes 2

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)

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)

Inherited instructions

Chapters 10 · Diseases of the respiratory system (J00-J99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
smoke inhalation (T59.81-)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use additional code

code, where applicable, 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)

Note

J40-J4B · Chronic lower respiratory diseases (J40-J4B)

Excludes 1

bronchitis due to chemicals, gases, fumes and vapors (J68.0)

Excludes 2

cystic fibrosis (E84.-)

More specific codes

Related codes

Official titles and instructions are preserved in their source language. Official sources ↗

References from other codes (5)

F54 · Psychological and behavioral factors associated with disorders or diseases classified elsewhere

Code first · asthma (J45.-)

J44 · Other chronic obstructive pulmonary disease

Code also · type of asthma, if applicable (J45.-)

J98.01 · Acute bronchospasm

Excludes 1 · asthma (J45.-)

R06.2 · Wheezing

Excludes 1 · Asthma (J45.-)

sections/J60-J70 · Lung diseases due to external agents (J60-J70)

Excludes 2 · asthma (J45.-)