The following information may apply to this code from its parent codes in the ICD-10 hierarchy. This information is important for proper coding and classification.

Parent Codes Referenced:

J00-J99(Chapter 10)J45(Asthma)J45.2(Mild intermittent asthma)

Includes

9 items

From J45:

•
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

4 items

From J45:

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

Excludes2

13 items

From J00-J99:

•
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)

From J45:

•
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

15 items

From J00-J99:

•
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)

From J45:

•
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)

Notes

1 item

From J00-J99:

•
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).

J45.21
Billable

Mild intermittent asthma with (acute) exacerbation

Billable Code

Referenced in Diagnoses

Additional Information from Parent Codes

Parent Codes Referenced:

Includes

From J45:

Excludes1

From J45:

Excludes2

From J00-J99:

From J45:

Use Additional Code

From J00-J99:

From J45:

Notes

From J00-J99:

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J45.21Billable

Mild intermittent asthma with (acute) exacerbation

Billable Code

Referenced in Diagnoses

Additional Information from Parent Codes

Parent Codes Referenced:

Includes

From J45:

Excludes1

From J45:

Excludes2

From J00-J99:

From J45:

Use Additional Code

From J00-J99:

From J45:

Notes

From J00-J99:

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J45.21
Billable

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