2026 ICD-10-CM Diagnosis Code L49.2Exfoliation due to erythematous condition involving 20-29 percent of body surface

ICD-10-CM Codes›L00–L99›L49-L54›L49

ICD-10-CM L49.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

L49.2 is a billable ICD-10-CM diagnosis code for exfoliation due to erythematous condition involving 20-29 percent of body surface. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. The code is not accepted as a principal diagnosis by the Medicare Code Editor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin.

Code Identity

ICD-10-CM Code
L49.2
Billable Status
Yes — Valid for Submission
Code Describes
Exfoliation due to erythematous condition involving 20-29 percent of body surface
Short Description
Exfoliatn due to erythemat cond w 20-29 pct of body surface
Parent Code
L49
Exfoliation due to erythematous conditions according to extent of body surface involved

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL49-L54Urticaria and erythema
CategoryL49Exfoliation due to erythematous conditions according to extent of body surface involved
This CodeL49.2Exfoliation due to erythematous condition involving 20-29 percent of body surface

Code EditsBilling

Medicare Code Editor checks that affect claim validity for L49.2.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Exfoliation
      • due to erythematous conditions according to extent of body surface involved
        • 20-29 percent of body surface

Clinical ClassificationClinical

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

CCSR SKN002
Other specified inflammatory condition of skin
Default principal diagnosis: inpatient No · outpatient Yes

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.

Convert L49.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
695.52 Exfl d/t eryth 20-29 bdy
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About L49.2Overview

Is L49.2 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report exfoliation due to erythematous condition involving 20-29 percent of body surface on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does L49.2 group to?

On inpatient claims, exfoliation due to erythematous condition involving 20-29 percent of body surface maps to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

Can L49.2 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because exfoliation due to erythematous condition involving 20-29 percent of body surface describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

What is the ICD-9 equivalent of L49.2?

Under the General Equivalence Mappings, exfoliation due to erythematous condition involving 20-29 percent of body surface converts to ICD-9-CM 695.52 (exfl d/t eryth 20-29 bdy). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.