2027 ICD-10-CM Diagnosis Code L25Unspecified contact dermatitis

ICD-10-CM Codes›L00–L99›L20-L30›L25

ICD-10-CM L25
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L25 is a non-billable ICD-10-CM category code for unspecified contact dermatitis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as L25.0, L25.1, L25.2, and L25.3.

Code Identity

ICD-10-CM Code
L25
Billable Status
No — Non-Billable Category
Code Describes
Unspecified contact dermatitis
Short Description
Unspecified contact dermatitis
Same as the full description in the CMS dataset.
Chapter
L20-L30
Dermatitis and eczema

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL20-L30Dermatitis and eczema
CategoryL25Unspecified contact dermatitis
This CodeL25Unspecified contact dermatitis

Specific Coding for Unspecified contact dermatitisOverview

Non-specific codes like L25 require more characters. Use one of these billable codes instead:

  • Use L25.0 for Unspecified contact dermatitis due to cosmetics

  • Use L25.1 for Unspecified contact dermatitis due to drugs in contact with skin

  • Use L25.2 for Unspecified contact dermatitis due to dyes

  • Use L25.3 for Unspecified contact dermatitis due to other chemical products

  • Use L25.4 for Unspecified contact dermatitis due to food in contact with skin

  • Use L25.5 for Unspecified contact dermatitis due to plants, except food

  • Use L25.8 for Unspecified contact dermatitis due to other agents

  • Use L25.9 for Unspecified contact dermatitis, unspecified cause

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L25: its own notes plus those printed at block L20-L30 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

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

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On L25 itself
  • 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)
From Block L20-L30 Dermatitis and eczema applies to 74 codes
  • chronic (childhood) granulomatous disease (D71-)
  • dermatitis gangrenosa (L08.0)
  • dermatitis herpetiformis (L13.0)
  • dry skin dermatitis (L85.3)
  • factitial dermatitis (L98.1)
  • perioral dermatitis (L71.0)
  • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
  • stasis dermatitis (I87.2)
From Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • lipomelanotic reticulosis (I89.8)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • viral warts (B07.-)

Notes

General instructions on how these codes are used.

From Block L20-L30 Dermatitis and eczema applies to 74 codes
  • In this block the terms dermatitis and eczema are used synonymously and interchangeably.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name L25, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming L25: they are not reported together with it, unless the two conditions are unrelated.

  • L53 Other erythematous conditions
    erythema due to external agents in contact with skin (L23-L25) names L23-L25, which includes this code
  • T78.4 Other and unspecified allergy
    dermatitis (L23-L25, L27.-) names L23-L25, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming L25: its condition is not part of those codes, and both may be reported when the patient has both.

  • L27 Dermatitis due to substances taken internally
    contact dermatitis (L23-L25) names L23-L25, which includes this code
  • L30 Other and unspecified dermatitis
    contact dermatitis (L23-L25) names L23-L25, which includes this code

Code First 2

These codes say to code first a condition named in the note, and L25 is one of the conditions named.

  • F54 Psychological and behavioral factors associated with disorders or diseases classified elsewhere
    dermatitis (L23-L25) names L23-L25, which includes this code
  • Block T36-T50 Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
    contact dermatitis (L23-L25) names L23-L25, which includes this code

Patient EducationClinical

Rashes

A rash is an area of irritated or swollen skin. Many rashes are itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of raw skin. Rashes are a symptom of many different medical problems. Other causes include irritating substances and allergies. Certain genes can make people more likely to get rashes.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L25Overview

What is the ICD-10 code for unspecified contact dermatitis?

L25 is the ICD-10-CM category for unspecified contact dermatitis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is L25 (Unspecified contact dermatitis) a billable code?

No. This is a category header that groups the codes for unspecified contact dermatitis, and headers cannot be submitted on claims. Claims for unspecified contact dermatitis need a more specific code from this category, such as L25.0, L25.1, and L25.2.

Can L25 be reported with a code from L23?

Not as a rule. The Excludes1 note on L25 lists "allergic contact dermatitis (L23.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).