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L24.4

L24.4Irritant contact dermatitis due to drugs in contact with skin

Billable / specific codeICD-10-CM

L24.4 is a billable, specific ICD-10-CM code for irritant contact dermatitis due to drugs in contact with skin. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Risk adjustment

L24.4 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

L24.4 is named in 10 Medicare coverage policies 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56459Billing and Coding: Debridement Services
  • A56558Billing and Coding: Allergy Testing
  • A57181Billing and Coding: Allergy Testing
  • A57473Billing and Coding: Allergy Testing

How L24.4 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to L24.4.

  • Dermatitiscontactirritantdue todrugs in contact with skin
  • Dermatitisdue todrugs and medicamentsin contact with skinirritant

Related codes at this level

Codes that share L24. If L24.4 is not quite right, the correct code is usually one of these.

Questions about L24.4

Is L24.4 a billable ICD-10-CM code?
Yes. L24.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L24.4 sit in the tabular list?
Diseases of the skin and subcutaneous tissue (L00-L99), in the block Dermatitis and eczema (L20-L30).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.