2026 ICD-10-CM Diagnosis Code L93.1Subacute cutaneous lupus erythematosus

ICD-10-CM Codes›L00–L99›L80-L99›L93

ICD-10-CM L93.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

L93.1 is a billable ICD-10-CM diagnosis code for subacute cutaneous lupus erythematosus. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 595 through 596. Coders also document this condition as acute cutaneous lupus erythematosus. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin and Systemic lupus erythematosus and connective tissue disorders.

Code Identity

ICD-10-CM Code
L93.1
Billable Status
Yes — Valid for Submission
Code Describes
Subacute cutaneous lupus erythematosus
Short Description
Subacute cutaneous lupus erythematosus
Same as the full description in the CMS dataset.
Parent Code
L93
Lupus erythematosus

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL93Lupus erythematosus
This CodeL93.1Subacute cutaneous lupus erythematosus

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute cutaneous lupus erythematosus
  • Anetoderma
  • Cutaneous lupus erythematosus
  • Lupus erythematosus-associated anetoderma
  • Subacute cutaneous lupus erythematosus
  • Subacute cutaneous lupus erythematosus, annular/polycyclic type
  • Subacute cutaneous lupus erythematosus, papulosquamous type

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.

    • Lupus
      • erythematosus (discoid) (local)
        • subacute cutaneous

Clinical ClassificationClinical

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

CCSR SKN002
Other specified inflammatory condition of skin
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR MUS024
Systemic lupus erythematosus and connective tissue disorders
Default principal diagnosis: inpatient No · outpatient No

Clinical InformationClinical

  • Anetoderma

    benign dermatosis caused by a loss of dermal elastic tissue resulting in localized sac-like areas of flaccid skin. it can be either primary (idiopathic) or secondary to other skin conditions, penicillamine use, or premature birth.

  • Subacute Cutaneous Lupus Erythematosus

    a dermatologic manifestation of lupus involving erythematous, scaly patches or plaques, generally appearing on the upper back, chest, and arms, and often following sun exposure. it most often resolves without scarring.

  • Cutaneous Lupus Erythematosus

    an autoimmune disorder that manifests as different lupus-specific skin disorders; it can occur with systemic lupus erythematosus, or as a singular disease.

  • Drug Induced Cutaneous Lupus Erythematosus

    a reaction to a drug characterized by skin findings common to lupus including photosensitivity and butterfly rash; typically it resolves after drug discontinuation.

  • Anetoderma

    a dermatologic condition characterized by focal loss of elastic tissue. clinically it presents with atrophic depressions or saccular outpouchings of the skin.

Patient EducationClinical

Lupus

Lupus is a chronic (long-lasting) type of autoimmune disease.Autoimmune diseases happen when your immune system attacks healthy cells and tissues by mistake. This attack causes inflammation. It can also damage many parts of the body, including the joints, skin, kidneys, heart, lungs, and brain.

The full article covers:

  • What is lupus?
  • What causes lupus?
  • Who is more likely to get lupus?
  • What are the symptoms of lupus?
  • What other problems can lupus cause?
  • How is lupus diagnosed?
  • What are the treatments for lupus?
  • How can I cope with lupus?

Read the full article at MedlinePlus

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

Convert L93.1 to ICD-9-CMHistory

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

ICD-9-CM
695.4 Lupus erythematosus
Approximate The match is approximate rather than exact.

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 L93.1Overview

Is L93.1 (Lupus erythematosus) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report subacute cutaneous lupus erythematosus on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does L93.1 group to?

When subacute cutaneous lupus erythematosus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 595, 596, with relative weights from 1.0825 to 2.1207 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of L93.1?

Under the General Equivalence Mappings, subacute cutaneous lupus erythematosus converts to ICD-9-CM 695.4 (lupus erythematosus). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.