L23.5 – Allergic contact dermatitis due to other chemical products

ICD-10-CM 2027 diagnosis code · Dermatitis and eczema

Billable code

ICD-10-CM code L23.5

Code: L23.5 (claims format: L235)
Description: Allergic contact dermatitis due to other chemical products
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 12. Diseases of the skin and subcutaneous tissue (L00-L99)
Block: L20-L30 Dermatitis and eczema
Parent codes: L23

Notes for L23.5

Applicable to:

Allergic contact dermatitis due to cement
Allergic contact dermatitis due to insecticide
Allergic contact dermatitis due to plastic
Allergic contact dermatitis due to rubber

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

L23 – Allergic contact dermatitis

Excludes1 (not coded here):

allergy NOS (T78.40)
contact dermatitis NOS (L25.9)
dermatitis NOS (L30.9)

Excludes2 (not included here):

dermatitis due to substances taken internally (L27.-)
dermatitis of eyelid (H01.1-)
diaper dermatitis (L22)
eczema of external ear (H60.5-)
irritant contact dermatitis (L24.-)
perioral dermatitis (L71.0)
radiation-related disorders of the skin and subcutaneous tissue (L55-L59)

Block L20-L30

Excludes2 (not included here):

chronic (childhood) granulomatous disease (D71-)
dermatitis gangrenosa (L08.0)
dermatitis herpetiformis (L13.0)
dry skin dermatitis (L85.3)
factitial dermatitis (L98.1)
perioral dermatitis (L71.0)
radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
stasis dermatitis (I87.2)

Notes:

In this block the terms dermatitis and eczema are used synonymously and interchangeably.

Index terms for L23.5

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in L23

Frequently asked questions

What is ICD-10 code L23.5?

L23.5 is the ICD-10-CM code for allergic contact dermatitis due to other chemical products, in the block L20-L30 (Dermatitis and eczema).

Is L23.5 a billable code?

Yes. L23.5 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does L23.5 belong to?

It belongs to category L23 – Allergic contact dermatitis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.