CA72

ICD-11 MMS 2026-01

Mendelson syndrome

Description

This is chemical pneumonitis caused by aspiration during anaesthesia, especially during pregnancy. Aspiration contents may include gastric juice, blood, bile, water or an association of them.

Index terms

  • Mendelson syndrome
  • Mendelson syndrome resulting from a procedure
  • pneumonitis due to inhalation of gastric secretions
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  • pulmonary acid aspiration syndrome

Excludes

  • JA67 – Complications of anaesthesia during pregnancy
  • JB0C – Complications of anaesthesia during labour or delivery
  • JB43 – Complications of anaesthesia during the puerperium

Exclusions from above levels

  • CA40 – Pneumonia
  • CA23 – Asthma
  • 01 – Certain infectious or parasitic diseases
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  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 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

Sibling codes

  • CA70 – Hypersensitivity pneumonitis due to organic dust
  • CA71 – Pneumonitis due to solids or liquids
  • CA7Y – Other specified pneumonitis
  • CA7Z – Pneumonitis, unspecified

Foundation entity

Mendelson syndrome – http://id.who.int/icd/entity/854587674

Allowed postcoordination axes

Part of: 12: Diseases of the respiratory system