2026 ICD-10-CM Diagnosis Code L23.5Allergic contact dermatitis due to other chemical products
ICD-10-CM Codes›L00–L99›L20-L30›L23
- Billable — Valid for Submission
- Not Chronic
L23.5 is a billable ICD-10-CM diagnosis code for allergic contact dermatitis due to other chemical products. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Allergic reactions and Contact dermatitis.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Allergic contact dermatitis caused by automotive grease
- Allergic contact dermatitis caused by chemical
- Allergic contact dermatitis caused by cutting oil
- Allergic contact dermatitis caused by drug in contact with skin
- Allergic contact dermatitis caused by iodine
- Allergic contact dermatitis caused by iodophore
- Allergic contact dermatitis caused by oil
- Allergic contact dermatitis caused by plant material
- Allergic contact dermatitis caused by povidone iodine
- Allergic contact dermatitis caused by rubber compound
- Allergic contact dermatitis caused by usnic acid
- Contact dermatitis caused by automotive grease
- Contact dermatitis caused by hydrocarbon
- Contact dermatitis caused by iodine
- Contact dermatitis caused by ketone
- Contact dermatitis caused by rubber
- Occupational allergic contact dermatitis caused by biocide
- Occupational allergic contact dermatitis caused by cutting oil
- Occupational allergic contact dermatitis caused by rubber compound
- Oil contact dermatitis
- Photoallergic dermatitis
- Photoallergic dermatitis due to biocide
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Allergic contact dermatitis due to cement
- Allergic contact dermatitis due to insecticide
- Allergic contact dermatitis due to plastic
- Allergic contact dermatitis due to rubber
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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Dermatitis (eczematous) - L30.9
- contact (occupational) - L25.9
- due to
- cement - L23.5
- chemical products NEC - L23.5
- insecticide - L23.5
- plastic - L23.5
- rubber - L23.5
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Dermatitis(eczematous)
- contact (occupational)
- allergic
- due to
- cement
- Dermatitis(eczematous)
- contact (occupational)
- allergic
- due to
- chemical products NEC
- Dermatitis(eczematous)
- contact (occupational)
- allergic
- due to
- insecticide
- Dermatitis(eczematous)
- contact (occupational)
- allergic
- due to
- plastic
- Dermatitis(eczematous)
- contact (occupational)
- allergic
- due to
- rubber
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Allergic Contact Dermatitis
an inflammatory skin condition caused by an immune response to direct contact between the skin and an allergen. it consists of a delayed type of allergic reaction at the affected site with resulting red, swollen, and blistered skin that may itch or leak.
Patient EducationClinical
Allergy
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:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L23.5 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L23.5Overview
Is L23.5 (Allergic contact dermatitis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report allergic contact dermatitis due to other chemical products on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does L23.5 group to?
When allergic contact dermatitis due to other chemical products is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of L23.5?
Under the General Equivalence Mappings, allergic contact dermatitis due to other chemical products converts to ICD-9-CM 692.4 (chemical dermatitis NEC). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
