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ICD-10-CM 2027 diagnosis code

L49.0Exfoliation due to erythematous condition involving less than 10 percent of body surface

✓ Billable / specificNot a principal dx

L49.0 is a valid, billable ICD-10-CM code for exfoliation due to erythematous condition involving less than 10 percent of body surface. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Exfoliatn due to erythemat cond w < 10 pct of body surface

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About L49.0

L49.0 is the ICD-10-CM diagnosis code for Exfoliation due to erythematous condition involving less than 10 percent of body surface. It belongs to category L49 (Exfoliation due to erythematous conditions according to extent of body surface involved), block L49-L54 (urticaria and erythema) and chapter 12 (diseases of the skin and subcutaneous tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within L49 (Exfoliation due to erythematous conditions according to extent of body surface involved), L49.0 is specifically for Exfoliation due to erythematous condition involving less than 10 percent of body surface. Related codes cover 10-19 percent of body surface (L49.1), 20-29 percent of body surface (L49.2), 30-39 percent of body surface (L49.3), 40-49 percent of body surface (L49.4), 50-59 percent of body surface (L49.5), 60-69 percent of body surface (L49.6), 70-79 percent of body surface (L49.7), 80-89 percent of body surface (L49.8) and 1 more.

Code first erythematous condition causing exfoliation, such as: Ritter's disease (L00), (Staphylococcal) scalded skin syndrome (L00), Stevens-Johnson syndrome (L51.1), Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome (L51.3) and 1 more.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 695.50 (Exfoliation due to erythematous condition involving less than 10 percent of body surface).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Exfoliation due to erythematous condition NOS

Notes that apply from higher levels

Instructions written at a parent level also apply to L49.0.

› From L49 Exfoliation due to erythematous conditions according to extent of body surface involved
Code first
  • erythematous condition causing exfoliation, such as:
  • Ritter's disease (L00)
  • (Staphylococcal) scalded skin syndrome (L00)
  • Stevens-Johnson syndrome (L51.1)
  • Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome (L51.3)
  • Toxic epidermal necrolysis (L51.2)

Broader instructions also apply from L49-L54 Urticaria and erythema and Chapter 12: Diseases of the skin and subcutaneous tissue.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to L49.0.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 09 · Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast

ICD-9-CM equivalent

Converter →
  • 695.50Exfoliation due to erythematous condition involving less than 10 percent of body surfaceexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about L49.0

Is L49.0 billable?

Yes. L49.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can L49.0 be used as a principal diagnosis?

No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

Is L49.0 a CC or MCC?

No. L49.0 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does L49.0 group to?

L49.0 is used in the MS-DRG v44.0 logic for MS-DRG 606 (Minor Skin Disorders with MCC) and MS-DRG 607 (Minor Skin Disorders without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for L49.0?

The CMS General Equivalence Mappings map L49.0 to ICD-9-CM 695.50.