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8. DISEASES OF THE RESPIRATORY SYSTEM (460-519) Use additional code to identify infectious organism CHRONIC OBSTRUCTIVE PULMONARY DISEASE AND ALLIED CONDITIONS (490-496)

493 Asthma Excludes: wheezin...

493 Asthma Excludes: wheezing NOS (

493.0 Extrinsic asthma

493.00-493.02
493.1 Intrinsic asthma Late-onset asthma

493.10-493.12
493.2 Chronic obstructive asthma

493.20-493.22
493.8 Other forms of asthma

493.81-493.82
493.9 Asthma, unspecified Asthma (bronchial) (allergic NOS) Bronchitis: allergic, asthmatic

493.90-493.92