ICD List 2023-2024 Edition

Diagnosis Codes Index - 491 Chronic bronchitis

ICD-9 Index
- Diseases of the respiratory system (460–519)
  - Chronic obstructive pulmonary disease and allied conditions (490-496)
    - - 491.0 - Simple chr bronchitis
      - 491.1 - Mucopurul chr bronchitis
      - 491.20 - Obst chr bronc w/o exac
      - 491.21 - Obs chr bronc w(ac) exac
      - 491.22 - Obs chr bronc w ac bronc
      - 491.8 - Chronic bronchitis NEC
      - 491.9 - Chronic bronchitis NOS