Is L23.3 a billable ICD-10-CM code?

Yes. L23.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L23.3 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Dermatitis and eczema (L20-L30).

L23.3

L23.3 — Allergic contact dermatitis due to drugs in contact with skin

Billable / specific codeICD-10-CM

L23.3 is a billable, specific ICD-10-CM code for allergic contact dermatitis due to drugs in contact with skin. It is valid for submission on a claim.

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

dermatitis due to ingested drugs and medicaments (L27.0-L27.1)

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

L23.3 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

L23.3 is named in 15 Medicare coverage policies — 15 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 L23.3 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 L23.3.

Dermatitis›contact›allergic›due to›drugs in contact with skin
Dermatitis›due to›drugs and medicaments›in contact with skin›allergic

Related codes at this level

Codes that share L23. If L23.3 is not quite right, the correct code is usually one of these.

Questions about L23.3

Is L23.3 a billable ICD-10-CM code?: Yes. L23.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L23.3 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Dermatitis and eczema (L20-L30).