2027 ICD-10-CM Diagnosis Code L24.A0Irritant contact dermatitis due to friction or contact with body fluids, unspecified

ICD-10-CM Codes›L00–L99›L20-L30›L24

ICD-10-CM L24.A0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L24.A0 is a billable ICD-10-CM diagnosis code for irritant contact dermatitis due to friction or contact with body fluids, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607. Coders also document this condition as contact dermatitis of skin of left hand. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Contact dermatitis.

Code Identity

ICD-10-CM Code
L24.A0
Billable Status
Yes — Valid for Submission
Code Describes
Irritant contact dermatitis due to friction or contact with body fluids, unspecified
Short Description
Irritant cntct derm d/t friction or cntct w body fluids,unsp
Parent Code
L24.A
Irritant contact dermatitis due to friction or contact with body fluids

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL20-L30Dermatitis and eczema
CategoryL24Irritant contact dermatitis
This CodeL24.A0Irritant contact dermatitis due to friction or contact with body fluids, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Contact dermatitis of skin of left hand
  • Contact dermatitis of skin of right hand
  • Irritant contact dermatitis caused by body fluid
  • Irritant contact dermatitis caused by friction
  • Irritant contact dermatitis of hand
  • Irritant contact dermatitis of hands caused by friction

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L24.A0: its own notes plus those printed at L24.A, L24, 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.

From L24.A Irritant contact dermatitis due to friction or contact with body fluids applies to 4 codes
  • irritant contact dermatitis related to stoma or fistula (L24.B-)
From L24 Irritant contact dermatitis applies to 19 codes

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.

From L24.A Irritant contact dermatitis due to friction or contact with body fluids applies to 4 codes
  • erythema intertrigo (L30.4)
From L24 Irritant contact dermatitis applies to 19 codes
  • allergic contact dermatitis (L23.-)
  • dermatitis due to substances taken internally (L27.-)
  • dermatitis of eyelid (H01.1-)
  • diaper dermatitis (L22)
  • 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 L24.A0, its category, or a range that includes it.

Excludes1 3

These codes carry an Excludes1 note naming L24.A0: they are not reported together with it, unless the two conditions are unrelated.

  • L25 Unspecified contact dermatitis
    irritant contact dermatitis (L24.-) names L24.-, which includes this code
  • 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 3

These codes carry an Excludes2 note naming L24.A0: its condition is not part of those codes, and both may be reported when the patient has both.

  • L23 Allergic contact dermatitis
    irritant contact dermatitis (L24.-) names L24.-, which includes this code
  • 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 L24.A0 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

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SKN005
Contact dermatitis
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Irritant Contact Dermatitis

    an inflammatory skin condition caused by direct contact between the skin and an irritating substance. it is typically manifested by erythema, mild edema, and scaling at the affected site.

Patient EducationClinical

Eczema

Eczema is a term for several different types of skin swelling. Eczema is also called dermatitis. Most types cause dry, itchy skin and rashes on the face, inside the elbows and behind the knees, and on the hands and feet. Scratching the skin can cause it to turn red, and to swell and itch even more.

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement L24.A0 replaces the following previously assigned code(s):

  • L24.89 - Irritant contact dermatitis due to other agents
FY 2022AddedAdded to the ICD-10-CM code setEffective October 1, 2021.
FY 2023–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L24.A0Overview

Is L24.A0 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report irritant contact dermatitis due to friction or contact with body fluids, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does L24.A0 group to?

When irritant contact dermatitis due to friction or contact with body fluids, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.

Can L24.A0 be reported with a code from L24.B?

Not as a rule. The Excludes1 note at L24.A, which applies to L24.A0, lists "irritant contact dermatitis related to stoma or fistula (L24.B-)". 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).