L23.4 is the authoritative medical code for Allergic contact dermatitis due to dyes. This classification is used in medical billing and clinical recording to specify the clinical criteria for allergic contact dermatitis due to dyes (ICD-10-CM L23.4), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Allergic contact dermatitis due to dyes is a billable ICD-10-CM diagnosis code L23.4. Excludes1 (not coded here): allergy NOS T78.40; contact dermatitis NOS L25.9; dermatitis NOS L30.9. Excludes2 (not included here): 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; chronic childhood granulomatous disease D71-; dermatitis gangrenosa L08.0; dermatitis herpetiformis L13.0; dry skin dermatitis L85.3; factitial dermatitis L98.1; stasis dermatitis I87.2.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for L23.4 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- allergy NOS T78.40
- contact dermatitis NOS L25.9
- dermatitis NOS L30.9
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- 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
- chronic childhood granulomatous disease D71-
- dermatitis gangrenosa L08.0
- dermatitis herpetiformis L13.0
- dry skin dermatitis L85.3
- factitial dermatitis L98.1
- stasis dermatitis I87.2
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with L23.4?
Per Excludes1 instructions, L23.4 must not be reported with: allergy NOS (T78.40); contact dermatitis NOS (L25.9); dermatitis NOS (L30.9).
Can L23.4 be reported alongside related conditions?
Per Excludes2 instructions, L23.4 and the following may both be reported when both are present: dermatitis due to substances taken internally (L27.-); dermatitis of eyelid (H01.1-); diaper dermatitis (L22); eczema of external ear (H60.5-).
Codes in This Family (10)
Official ICD-10-CM classifications in the same code family as L23.4, with their registry titles.
- L23 — Allergic contact dermatitis
- L23.0 — Allergic contact dermatitis due to metals
- L23.1 — Allergic contact dermatitis due to adhesives
- L23.2 — Allergic contact dermatitis due to cosmetics
- L23.3 — Allergic contact dermatitis due to drugs in contact with skin
- L23.5 — Allergic contact dermatitis due to other chemical products
- L23.6 — Allergic contact dermatitis due to food in contact with the skin
- L23.7 — Allergic contact dermatitis due to plants, except food
- L23.8 — Allergic contact dermatitis due to other agents
- L23.9 — Allergic contact dermatitis, unspecified cause
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Dermatitis (eczematous), contact (occupational), allergic, due to, dyes
- Dermatitis (eczematous), due to, dyes (contact), allergic
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code L24.4
Irritant contact dermatitis due to drugs in contact with skin
ICD Code L25.4
Unspecified contact dermatitis due to food in contact with skin