There are 3 ICD-9-CM codes below 493.9 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
Diagnosis Definition(s)
form of bronchial disorder associated with airway obstruction, marked by recurrent attacks of paroxysmal dyspnea, with wheezing due to spasmodic contraction of the bronchi.
A chronic respiratory disease manifested as difficulty breathing due to the narrowing of bronchial passageways.
Also applicable to/known as
Asthma (bronchial) (allergic NOS)
Bronchitis:
allergic
asthmatic
ICD-9-CM Volume 2 Index Entries That Refer To 493.9