Valid for Submission
L23.9 is a billable diagnosis code used to specify a medical diagnosis of allergic contact dermatitis, unspecified cause. The code L23.9 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code L23.9 might also be used to specify conditions or terms like allergic contact dermatitis, allergic contact dermatitis of external auditory canal, allergic contact dermatitis of female genitalia, allergic contact dermatitis of hands, allergic contact dermatitis of lower leg , allergic contact dermatitis of male genitalia, etc.
Unspecified diagnosis codes like L23.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code L23.9:
Inclusion TermsInclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Allergic contact eczema NOS
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code L23.9 are found in the index:
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Allergic contact dermatitis
- Allergic contact dermatitis of external auditory canal
- Allergic contact dermatitis of female genitalia
- Allergic contact dermatitis of hands
- Allergic contact dermatitis of lower leg
- Allergic contact dermatitis of male genitalia
- Allergic contact dermatitis of perianal skin
- Allergic contact sensitization of skin and skin-associated mucous membrane
- Allergic contact urticaria
- Allergic disorder of skin
- Allergic sensitization
- Allergic urticaria
- Contact dermatitis of female genitalia
- Contact urticaria
- Lichenoid allergic contact dermatitis
- Lichenoid allergic contact reaction
- O/E - allergic rash
- Occupational allergic contact dermatitis
- Perianal dermatitis
- Vulvitis associated with another disorder
Diagnostic Related Groups - MS-DRG Mapping
Convert L23.9 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code L23.9 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Also called: Hypersensitivity
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
- Dust mites
- Mold spores
- Pet dander
- Insect stings
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.
NIH: National Institute of Allergy and Infectious Diseases
- Allergic reactions (Medical Encyclopedia)
- Allergic rhinitis - self-care (Medical Encyclopedia)
- Allergies (Medical Encyclopedia)
- Allergies, asthma, and dust (Medical Encyclopedia)
- Allergies, asthma, and molds (Medical Encyclopedia)
- Allergy testing - skin (Medical Encyclopedia)
- Angioedema (Medical Encyclopedia)
- Antihistamines for allergies (Medical Encyclopedia)
[Learn More in MedlinePlus]
Also called: Dermatitis, Skin rash
A rash is an area of irritated or swollen skin. Many rashes are itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of raw skin. Rashes are a symptom of many different medical problems. Other causes include irritating substances and allergies. Certain genes can make people more likely to get rashes.
Contact dermatitis is a common type of rash. It causes redness, itching, and sometimes small bumps. You get the rash where you have touched an irritant, such as a chemical, or something you are allergic to, like poison ivy.
Some rashes develop right away. Others form over several days. Although most rashes clear up fairly quickly, others are long-lasting and need long-term treatment.
Because rashes can be caused by many different things, it's important to figure out what kind you have before you treat it. If it is a bad rash, if it does not go away, or if you have other symptoms, you should see your health care provider. Treatments may include moisturizers, lotions, baths, cortisone creams that relieve swelling, and antihistamines, which relieve itching.
- "Hot Tub Rash" and "Swimmer's Ear" (Pseudomonas) (Centers for Disease Control and Prevention)
- Contact dermatitis (Medical Encyclopedia)
- Diaper rash (Medical Encyclopedia)
- Hot tub folliculitis (Medical Encyclopedia)
- Pityriasis rosea (Medical Encyclopedia)
- Rash - child under 2 years (Medical Encyclopedia)
- Rashes (Medical Encyclopedia)
[Learn More in MedlinePlus]