2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Chronic Obstructive Pulmonary Disease And Allied Conditions 490-496 > 2006 ICD-9-CM Diagnosis 493 Asthma View the most recent version of ICD-9-CM 493 A form of bronchial disorder associated with airway obstruction, marked by recurrent attacks of paroxysmal dyspnea, with wheezing due to spasmodic contraction of the bronchi. 493 is a non-specific code that cannot be used to specify a diagnosis 493 Excludes wheezing NOS (786.07)