21Symptoms, signs or clinical findings, not elsewhere classified Symptoms, signs or clinical findings of the digestive system or abdomen Symptoms or signs involving the digestive system or abdomen Symptoms related to the lower gastrointestinal tract or abdomen
ME04
category
Ascites
Definition Accumulation or retention of free fluid in the abdominal peritoneal cavity between the tissues lining the abdomen and abdominal organs. The fluid may be serous, haemorrhagic, or the result of inflammation or tumour metastasis to the peritoneum.
Nearby in Symptoms related to the lower gastrointestinal tract or abdomen
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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