Chronic bronchitis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

exclusions

• chronic asthmatic bronchitis  (CA22.1)
• chronic: bronchitis: with airways obstruction  (CA22)
• chronic: emphysematous bronchitis  (CA22.1)
• chronic: obstructive pulmonary disease NOS  (CA22)

sections/codes in this section (CA20.1-CA20.1)

• Simple chronic bronchitis  (CA20.10)
• Mucopurulent chronic bronchitis  (CA20.11)
• Mixed simple and mucopurulent chronic bronchitis  (CA20.12)
• Protracted bacterial bronchitis  (CA20.13)
• Other specified chronic bronchitis  (CA20.1Y)
• Chronic bronchitis, unspecified  (CA20.1Z)

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