ICD10BillableValid for clinical use
ICD-10 Code L24.9: Irritant contact dermatitis, unspecified cause
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the skin and subcutaneous tissue (L00-L99).
When is it used?
- May be used when a clinician documents irritant contact dermatitis, unspecified cause in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
12Diseases of the skin and subcutaneous tissue (L00-L99)
block
L20-L30Dermatitis and eczema
category
L24Irritant contact dermatitis
currentL24
Official coding notes
Inclusion terms
- Irritant contact eczema NOS
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
Dermatologist
Related codes
L24.0Irritant contact dermatitis due to detergentscodeL24.1Irritant contact dermatitis due to oils and greasescodeL24.2Irritant contact dermatitis due to solventscodeL24.3Irritant contact dermatitis due to cosmeticscodeL24.4Irritant contact dermatitis due to drugs in contact with skincodeL24.5Irritant contact dermatitis due to other chemical productscodeL24.6Irritant contact dermatitis due to food in contact with skincodeL24.7Irritant contact dermatitis due to plants, except foodcodeL24.8Irritant contact dermatitis due to other agentscategoryL24.AIrritant contact dermatitis due to friction or contact with body fluidscategoryL24.BIrritant contact dermatitis related to stoma or fistulacategory
Sibling codes
L24.0Irritant contact dermatitis due to detergentsbillableL24.1Irritant contact dermatitis due to oils and greasesbillableL24.2Irritant contact dermatitis due to solventsbillableL24.3Irritant contact dermatitis due to cosmeticsbillableL24.4Irritant contact dermatitis due to drugs in contact with skinbillableL24.5Irritant contact dermatitis due to other chemical productsbillableL24.6Irritant contact dermatitis due to food in contact with skinbillableL24.7Irritant contact dermatitis due to plants, except foodbillableL24.8Irritant contact dermatitis due to other agentsL24.AIrritant contact dermatitis due to friction or contact with body fluidsL24.BIrritant contact dermatitis related to stoma or fistula
Coverage-related procedures and services
CPT 95065high
DIRECT NASAL MUCOUS MEMBRANE TEST
Source: CMS coverage guidance
CPT 95060high
OPHTHALMIC MUCOUS MEMBRANE TESTS
Source: CMS coverage guidance
CPT 95044high
PATCH OR APPLICATION TEST(S) (SPECIFY NUMBER OF TESTS)
Source: CMS coverage guidance
CPT 95052high
PHOTO PATCH TEST(S) (SPECIFY NUMBER OF TESTS)
Source: CMS coverage guidance
CPT 95056high
PHOTO TESTS
Source: CMS coverage guidance
CPT 86005high
ALLERGEN SPECIFIC IGE; QUALITATIVE, MULTIALLERGEN SCREEN (EG, DISK, SPONGE, CARD)
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 425630003high
Acute irritant contact dermatitis
Source: SNOMED International ICD-10 map
SNOMED_CT 1251378008high
Acute irritant contact dermatitis of hand
Source: SNOMED International ICD-10 map
SNOMED_CT 402273004high
Chronic irritant contact dermatitis of hands
Source: SNOMED International ICD-10 map
SNOMED_CT 238583005high
Contact dermatitis caused by saliva
Source: SNOMED International ICD-10 map
SNOMED_CT 1251380002high
Exacerbation of constitutional dermatitis due to occupational exposure to contact allergen
Source: SNOMED International ICD-10 map
SNOMED_CT 1251381003high
Exacerbation of constitutional dermatitis due to occupational exposure to skin irritant
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
L24.9
Common synonyms
Irritant contact dermatitis, unspecified causeIrritant contact dermatitis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.