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L25.9 — Unspecified contact dermatitis, unspecified cause
L25.9
What this code means
Contact dermatitis is a skin reaction to something touching the skin; neither the type nor the cause is specified here.
Also called: contact dermatitis.
When this code is used
Used for unspecified contact dermatitis, unspecified cause.
Where it sits in ICD-10-CM
Code L25.9 belongs to Chapter 12: Diseases of the skin and subcutaneous tissue, which covers codes L00–L99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Related anatomy
Frequently asked questions
What is ICD-10-CM code L25.9?
L25.9 is the ICD-10-CM diagnosis code for “Unspecified contact dermatitis, unspecified cause”. Contact dermatitis is a skin reaction to something touching the skin; neither the type nor the cause is specified here.
When is code L25.9 used?
Used for unspecified contact dermatitis, unspecified cause. It belongs to Chapter 12 of ICD-10-CM (Diseases of the skin and subcutaneous tissue).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.