BB20

ICD-11 MMS 2026-01

Acute pericarditis

Description

Acute pericarditis is defined as pericardial inflammation of no more than 1 to 2 weeks duration.

Inclusions

  • acute pericardial effusion

Excludes

  • 1B41.0 – Acute rheumatic pericarditis

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

  • BB20.0 – Infectious pericarditis
  • BB20.1 – Neoplastic pericarditis
  • BB20.2 – Myopericarditis
  • BB20.Y – Other specified acute pericarditis
  • BB20.Z – Acute pericarditis, unspecified

Sibling codes

  • BB21 – Chronic rheumatic pericarditis
  • BB22 – Constrictive pericarditis
  • BB23 – Cardiac tamponade
  • BB24 – Haemopericardium
  • BB25 – Pericardial effusion
  • BB2Y – Other specified pericarditis
  • BB2Z – Pericarditis, unspecified

Foundation entity

Acute pericarditis – http://id.who.int/icd/entity/2099186145

Allowed postcoordination axes

Part of: 11: Diseases of the circulatory system