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 MD81Abdominal or pelvic pain
MD81.3
category
Acute abdomen
Definition A clinical syndrome with acute abdominal pain that is severe, and rapid onset. Acute abdomen may be caused by a variety of disorders, injuries, or diseases.
Also indexed as
Acute abdomen Severe abdominal pain with abdominal rigidity Severe localised abdominal pain abdominal acute syndrome acute abdominal pain syndrome severe abdomen pain severe abdominal pain surgical abdomen
Nearby in Abdominal or pelvic pain
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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