Lactose Intolerance
Also known as: Lactose intolerance, unspecified · Dairy product intolerance · Lactase deficiency · Milk intolerance
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).
In short
Lactose intolerance means that a person cannot digest foods with lactose in them, which is the sugar found in milk and foods made with milk. After eating foods with lactose, a person may feel sick to their stomach, or have gas, diarrhea, or swelling in their stomach. A doctor may do a blood, breath, or stool test to find out if these problems are due to lactose intolerance. Lactose intolerance is not serious, and eating less food with lactose or using pills or drops to help digest lactose usually helps.
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
Lactose intolerance means that you cannot digest foods with lactose in them. Lactose is the sugar found in milk and foods made with milk. After eating foods with lactose in them, you may feel sick to your stomach. You may also have:
- Gas
- Diarrhea
- Swelling in your stomach
Your doctor may do a blood, breath or stool test to find out if your problems are due to lactose intolerance.
Lactose intolerance is not serious. Eating less food with lactose, or using pills or drops to help you digest lactose usually helps. You may need to take a calcium supplement if you don't get enough of it from your diet, since milk and foods made with milk are the most common source of calcium for most people.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases
Next to it in ICD-10
- E67Excess intake of vitamins or nutrients
- E68After-effects of excess nutrition
- E72Disorders of amino-acid metabolism
- E74Disorders of carbohydrate metabolism
- E75Lipid storage disorders
- E76Mucopolysaccharidoses (glycosaminoglycan disorders)
Neighbouring codes in the classification, not a medical link.
External resources
Questions
What is the ICD-10 code for Lactose Intolerance?
E73 (WHO, International Classification of Diseases, 10th Revision).
What is the ICD-11 code for Lactose Intolerance?
5C61.6Z: Lactose intolerance, 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.
- Source: MedlinePlus, National Library of Medicine.
- 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.
- 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 →
About this page. This page brings together public information from official sources, each cited where it is used. It is not medical advice, it is not a diagnosis, and it does not tell you which treatment to take.
Treatments. Indications are quoted unchanged from official product information (European Medicines Agency, U.S. Food and Drug Administration). They describe what a medicine is approved for, not whether it is right for you. Approved uses can differ between countries. Always read the package leaflet and follow your doctor's or pharmacist's advice.
What people report. Figures marked "reported by Anpheros users" are anonymous counts from at least 20 people who agreed to share them. They show what people report, not what works, and they are not clinical evidence.
Links between terms. "May be associated with" means the link appears in a cited source. It does not mean you have that condition.
In an emergency, call 112 (or your local emergency number). Do not delay seeking medical help because of something you read here.