Is L25.3 a billable ICD-10-CM code?

Yes. L25.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L25.3 sit in the tabular list?

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

What cannot be coded together with L25.3?

L25.3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L25.3 (L25) and apply to it just the same.

L25.3

L25.3 — Unspecified contact dermatitis due to other chemical products

Billable / specific codeICD-10-CM

L25.3 is a billable, specific ICD-10-CM code for unspecified contact dermatitis due to other chemical products. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Unspecified contact dermatitis due to cement
Unspecified contact dermatitis due to insecticide

Excludes1 inherited from the categories above L25.3

These are not written on L25.3, but they bind it: a note on a category applies to every code beneath it. Billing L25.3 with anything listed here is a denial.

Written on L25 — Unspecified contact dermatitis

allergic contact dermatitis (L23.-)
allergy NOS (T78.40)
dermatitis NOS (L30.9)
irritant contact dermatitis (L24.-)

Excludes2 inherited from the categories above L25.3

Also inherited, and the opposite of Excludes1: these conditions are not part of L25.3, but a patient can have both, so you may code both.

Written on L25 — Unspecified contact dermatitis

dermatitis due to ingested substances (L27.-)
dermatitis of eyelid (H01.1-)
eczema of external ear (H60.5-)
perioral dermatitis (L71.0)
radiation-related disorders of the skin and subcutaneous tissue (L55-L59)

Risk adjustment

L25.3 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

L25.3 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.

A56558Billing and Coding: Allergy Testing
A56767Billing and Coding: Heavy Metal Testing
A57181Billing and Coding: Allergy Testing
A57473Billing and Coding: Allergy Testing

How L25.3 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 L25.3.

Dermatitis›due to›cement(contact)
Dermatitis›due to›chemical NEC(s)
Dermatitis›due to›plastic(contact)
Dermatitis›contact›due to›cement
Dermatitis›contact›due to›chemical products NEC

Code history

L25.3 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share L25. If L25.3 is not quite right, the correct code is usually one of these.

Questions about L25.3

Is L25.3 a billable ICD-10-CM code?: Yes. L25.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L25.3 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Dermatitis and eczema (L20-L30).
What cannot be coded together with L25.3?: L25.3 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L25.3 (L25) and apply to it just the same.