L23.4

L23.4: Allergic contact dermatitis due to dyes

Billable / specific codeICD-10-CM

L23.4 is a billable, specific ICD-10-CM code for allergic contact dermatitis due to dyes. It is valid for submission on a claim.

Check L23.4 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above L23.4

A category’s note binds every code beneath it.

Written on L23: Allergic contact dermatitis

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

Excludes2 inherited from the categories above L23.4

Not part of this code, but both may be coded when both are present.

Written on L23: Allergic contact dermatitis

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)

Other codes that can never be billed with L23.4

Their own Excludes1 notes name this code, so the conflict is not listed above.

L25Unspecified contact dermatitis
L50Urticaria

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

L23.4 is named in 13 Medicare coverage policies: 13 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56459Billing and Coding: Debridement Services
A56558Billing and Coding: Allergy Testing
A57531Billing and Coding: Allergy Testing
A60360Billing and Coding: Allergy Diagnostic Testing

Alphabetic index entries that lead here

Dermatitis›due to›dyes›allergic
Dermatitis›contact›allergic›due to›dyes

Code history

Unchanged in every release from FY2024 to FY2027.