11Diseases of the circulatory system
Pericarditis
BB25
category
Pericardial effusion
Definition Pericardial effusion is an abnormal accumulation of fluid in the pericardial sac. Noninflammatory diseases such as chronic renal failure, circulatory congestion, hypothyroidism and amyroidosis can cause pericardial effusion.
Also indexed as
Catamenial pericardial effusion Chylopericardium Noninflammatory pericardial effusion Pericardial effusion pericardium effusion
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
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This page reproduces WHO classification content for reference. It is not
medical advice and must not be used to diagnose or treat. For coding
decisions, consult the official release and your national coding guidelines.
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