L23.0 ICD-10-CA code: Allergic contact dermatitis due to metals

L23.0 is the ICD-10-CA code for “Allergic contact dermatitis due to metals” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

L23.0

Allergic contact dermatitis due to metals

Short description: Allergic contact dermatitis due to metal

ICD-10-CA · Canada · Also written L230

Index terms

Entries in CIHI’s alphabetical index that lead to L23.0. Searching the index by the condition the note names is how coders reach this code.

Dermatitis, due to, dichromate (allergic)
Dermatitis, due to, nickel (allergic) (contact)
Dermatitis, due to, chromium (allergic) (contact)
Dermatitis, due to, metals, metal salts (allergic) (contact)

Notes for L23.0

As CIHI prints them, with any note L23.0 takes from the headings above it.

Includes

ChromiumNickel
Allergic contact eczemaFrom L23 Allergic contact dermatitis

Excludes

Conditions classified elsewhere.

Allergy NOS (T78.4)dermatitis (of):• NOS (L30.9)• contact NOS (L25.9)• diaper [napkin] (L22)• due to substances taken internally (L27.-)• eyelid (H01.1)• irritant contact (L24.-)• perioral (L71.0)eczema of external ear (H60.5)radiation-related disorders of the skin and subcutaneous tissue (L55-L59)From L23 Allergic contact dermatitis
Chronic (childhood) granulomatous disease (D71)dermatitis:• dry skin (L85.3)• factitial (L98.1)• gangrenosa (L08.0)• herpetiformis (L13.0)• perioral (L71.0)• stasis (I83.1-I83.2)radiation-related disorders of the skin and subcutaneous tissue (L55-L59)From L20-L30 Dermatitis and eczema
Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)lipomelanotic reticulosis (I89.8)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)From Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)

Note

In this block the terms dermatitis and eczema are used synonymously and interchangeably.From L20-L30 Dermatitis and eczema

Where L23.0 sits

1ChapterChapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
2Block L20-L30Dermatitis and eczema
3Category L23Allergic contact dermatitis
4Valid code L23.0Allergic contact dermatitis due to metals

Source and release

Data release: ICD-10-CA · FY 2026–2027
Effective date: Apr 1, 2026
Publisher: CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See L23.0 in the CIHI source

Frequently asked questions

What does ICD-10-CA code L23.0 mean?

L23.0 is the ICD-10-CA code for “Allergic contact dermatitis due to metals” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is L23.0 in ICD-10-CA?

L23.0 sits under L23 Allergic contact dermatitis, within L20-L30 Dermatitis and eczema, within Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99).

What coding notes apply to L23.0?

ICD-10-CA lists Includes, Excludes, Note notes for L23.0, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

View L23