Acute appendicitis without localised or generalised peritonitis
General information only. Anpheros does not diagnose and does not recommend treatment. Talk to a doctor or pharmacist about your situation. In an emergency, call 112 (or your local emergency number).
Codes
Description
The appendix is a small, tube-like organ attached to the first part of the large intestine. It is located in the lower right part of the abdomen. It has no known function. A blockage inside of the appendix causes appendicitis. The blockage leads to increased pressure, problems with blood flow, and inflammation. If the blockage is not treated, the appendix can burst and spread infection into the abdomen. This causes a condition called peritonitis.
The main symptom is pain in the abdomen, often on the right side. It is usually sudden and gets worse over time. Other symptoms may include:
- Swelling in the abdomen
- Loss of appetite
- Nausea and vomiting
- Constipation or diarrhea
- Inability to pass gas
- Low fever
Not everyone with appendicitis has all these symptoms.
Appendicitis is a medical emergency. Treatment almost always involves removing the appendix. Anyone can get appendicitis, but it is more common among people 10 to 30 years old.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases
Next to it in ICD-10
- K21Acid reflux (GERD)
- K29Diseases of the stomach or the duodenum, unspecified
- K31Other stomach and duodenum diseases
- K36Appendicitis, unspecified
- K37Appendicitis (not specified)
- K38Other diseases of the appendix
Neighbouring codes in the classification, not a medical link.
External resources
Questions
What is the ICD-10 code for Acute appendicitis without localised or generalised peritonitis?
K35 (WHO, International Classification of Diseases, 10th Revision).
What is the ICD-11 code for Acute appendicitis without localised or generalised peritonitis?
DB10.02: Acute appendicitis without localised or generalised peritonitis (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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In an emergency, call 112 (or your local emergency number). Do not delay seeking medical help because of something you read here.