CA20

ICD-11 MMS 2026-01

Bronchitis

Description

Bronchitis is inflammation of the main air passages to the lungs.

Coding note

Excludes acute infectious bronchitis

Excludes

  • CA23.3 – bronchitis, asthmatic NOS
  • CA81.Y – bronchitis, chemical (acute)

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 19 – Certain conditions originating in the perinatal period
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes

Child codes

  • CA20.0 – Acute noninfectious bronchitis
  • CA20.1 – Chronic bronchitis
  • CA20.Y – Other specified bronchitis
  • CA20.Z – Bronchitis, unspecified

Foundation children elsewhere

  • CA42 – Acute bronchitis

Sibling codes

  • CA21 – Emphysema
  • CA22 – Chronic obstructive pulmonary disease
  • CA23 – Asthma
  • CA24 – Bronchiectasis
  • CA25 – Cystic fibrosis
  • CA26 – Chronic bronchiolitis
  • CA27 – Tracheobronchitis
  • CA2Y – Other specified lower respiratory tract disease
  • CA2Z – Lower respiratory tract disease, unspecified

Foundation entity

Bronchitis – http://id.who.int/icd/entity/11753425

Part of: 12: Diseases of the respiratory system