2026 ICD-10-CM Diagnosis Code L24.4Irritant contact dermatitis due to drugs in contact with skin

ICD-10-CM Codes›L00–L99›L20-L30›L24

ICD-10-CM L24.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

L24.4 is a billable ICD-10-CM diagnosis code for irritant contact dermatitis due to drugs in contact with skin. 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. Coders also document this condition as irritant contact dermatitis caused by drug in contact with skin. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Contact dermatitis and Drug induced or toxic related condition.

Code Identity

ICD-10-CM Code
L24.4
Billable Status
Yes — Valid for Submission
Code Describes
Irritant contact dermatitis due to drugs in contact with skin
Short Description
Irritant contact dermatitis due to drugs in contact w skin
Parent Code
L24
Irritant contact dermatitis

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL20-L30Dermatitis and eczema
CategoryL24Irritant contact dermatitis
This CodeL24.4Irritant contact dermatitis due to drugs in contact with skin

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Irritant contact dermatitis caused by drug in contact with skin
  • Irritant contact dermatitis caused by emollient substance

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code for adverse effect, if applicable, to identify drug T36 T50

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dermatitis(eczematous)
      • contact (occupational)
        • irritant
          • due to
            • drugs in contact with skin
    • Dermatitis(eczematous)
      • due to
        • drugs and medicaments (generalized) (internal use)
          • in contact with skin
            • irritant

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SKN005
Contact dermatitis
Default principal diagnosis: inpatient No · outpatient No
CCSR INJ030
Drug induced or toxic related condition
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Irritant Contact Dermatitis

    an inflammatory skin condition caused by direct contact between the skin and an irritating substance. it is typically manifested by erythema, mild edema, and scaling at the affected site.

Patient EducationClinical

Drug Reactions

Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions, such as drug interactions, side effects, and allergies.

The full article covers:

  • What is a drug interaction?
  • What are side effects?
  • What are drug allergies?
  • How can I stay safe when taking medicines?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert L24.4 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
692.3 Topical med dermatitis
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About L24.4Overview

Is L24.4 (Irritant contact dermatitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report irritant contact dermatitis due to drugs in contact with skin on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does L24.4 group to?

When irritant contact dermatitis due to drugs in contact with skin 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 L24.4?

Under the General Equivalence Mappings, irritant contact dermatitis due to drugs in contact with skin converts to ICD-9-CM 692.3 (topical med dermatitis). 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.