Allergic contact dermatitis, unspecified
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
An allergy is a reaction by the immune system to something that does not bother most other people, and individuals who have allergies often are sensitive to more than one thing. Substances that often cause reactions include pollen, dust mites, mold spores, pet dander, food, insect stings, and medicines. Allergies, which probably involve both genes and the environment, can cause symptoms such as a runny nose, sneezing, itching, rashes, swelling, asthma, or a severe, life-threatening reaction called anaphylaxis. Doctors use skin and blood tests to diagnose allergies, and treatments include medicines, allergy shots, and avoiding the substances that cause the reactions.
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
An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are:
- Pollen
- Dust mites
- Mold spores
- Pet dander
- Food
- Insect stings
- Medicines
Normally, your immune system fights germs. It is your body's defense system. In most allergic reactions, however, it is responding to a false alarm. Genes and the environment probably both play a role.
Allergies can cause a variety of symptoms such as a runny nose, sneezing, itching, rashes, swelling, or asthma. Allergies can range from minor to severe. Anaphylaxis is a severe reaction that can be life-threatening. Doctors use skin and blood tests to diagnose allergies. Treatments include medicines, allergy shots, and avoiding the substances that cause the reactions.
Next to it in ICD-10
- L20Atopic eczema (atopic dermatitis)
- L21Dandruff, Cradle Cap, and Other Scalp Conditions
- L22Nappy rash (diaper dermatitis)
- L40Psoriasis
- L45Scaly skin disorders in other diseases
- L55Sunburn, unspecified
Neighbouring codes in the classification, not a medical link.
External resources
Questions
What is the ICD-10 code for Allergic contact dermatitis, unspecified?
L23 (WHO, International Classification of Diseases, 10th Revision).
What is the ICD-11 code for Allergic contact dermatitis, unspecified?
EK00.Z: Allergic contact dermatitis, 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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