Peritonitis, unspecified
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In short
The peritoneum is the tissue that lines the abdominal wall and covers most of the organs in the abdomen, with its surface lubricated by peritoneal fluid. Peritonitis is a disorder of the peritoneum characterized by an inflammation of this tissue. Doctors may use imaging tests or lab tests to analyze the peritoneal fluid to diagnose the problem, and treatment depends on the cause.
Source: MedlinePlus, National Library of Medicine.
AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.
Codes
Description
Your peritoneum is the tissue that lines your abdominal wall and covers most of the organs in your abdomen. A liquid, peritoneal fluid, lubricates the surface of this tissue.
Disorders of the peritoneum are not common. They include:
- Peritonitis - an inflammation of the peritoneum
- Cancer
- Complications from peritoneal dialysis
Your doctor may use imaging tests or lab tests to analyze the peritoneal fluid to diagnose the problem. Treatment of peritoneal disorders depends on the cause.
Next to it in ICD-10
- K62Other diseases of the anus and rectum
- K63Other diseases of the intestine
- K64Haemorrhoids (piles)
- K66Other disorders of the peritoneum
- K67Peritoneal disorders in infectious diseases
- K70Alcohol-related liver disease
Neighbouring codes in the classification, not a medical link.
External resources
Questions
What is the ICD-10 code for Peritonitis, unspecified?
K65 (WHO, International Classification of Diseases, 10th Revision).
What is the ICD-11 code for Peritonitis, unspecified?
DC50.Z: Peritonitis, unspecified (WHO, ICD-11 for Mortality and Morbidity Statistics).
Sources and attribution
- ICD-11 for Mortality and Morbidity Statistics, © World Health Organization, licensed under CC BY-ND 3.0 IGO.
- Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
- Source: MedlinePlus, National Library of Medicine.
- ICD-10 codes and titles © World Health Organization. Source: WHO, International Classification of Diseases, 10th Revision (2019).
Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →
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