2027 ICD-10-CM Diagnosis Code L93.0Discoid lupus erythematosus
ICD-10-CM Codes›L00–L99›L80-L99›L93
- Billable — Valid for Submission
- Chronic Condition
L93.0 is a billable ICD-10-CM diagnosis code for discoid lupus erythematosus. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 595 through 596. 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.
L93.0 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 317 for payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
L93.0 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chilblain lupus erythematosus
- Chronic cutaneous lupus erythematosus
- Chronic discoid lupus erythematosus
- Discoid lupus erythematosus
- Discoid lupus erythematosus of face
- Discoid lupus erythematosus of foot
- Discoid lupus erythematosus of genital mucous membranes
- Discoid lupus erythematosus of hands
- Discoid lupus erythematosus of lip
- Discoid lupus erythematosus of mucous membranes
- Discoid lupus erythematosus of oral mucosa
- Discoid lupus erythematosus of scalp
- Familial chilblain lupus erythematosus
- Gingival disease due to lupus erythematosus
- Hypermelanosis due to connective tissue disorder
- Hypertrophic type discoid lupus erythematosus
- Lichen planus-lupus erythematosus overlap
- Lupus erythematosus
- Lupus erythematosus and erythema multiforme-like syndrome
- Lupus erythematosus chronicus
- Lupus erythematosus migrans
- Lupus erythematosus overlap syndrome
- Lupus erythematosus unguium mutilans
- Lupus erythematosus-associated calcinosis
- Lupus erythematosus-associated hypermelanosis
- Lupus erythematosus-associated nail dystrophy
- Lupus erythematosus-associated nailfold telangiectasia
- Lupus erythematosus-associated necrotizing vasculitis
- Lupus erythematosus-associated papulonodular mucinosis
- Lupus vasculitis
- Necrotizing cutaneous vasculitis
- Necrotizing vasculitis secondary to connective tissue disease
- Neonatal lupus erythematosus
- Overlap syndrome
- Poikiloderma due to lupus erythematosus
- Rosaceous type discoid lupus erythematosus
- Secondary catabolic mucinosis of skin
- Secondary cutaneous vasculitis
- Secondary systemic vasculitis
- Subcutaneous nodule associated with lupus erythematosus
- Telangiectasia of nailfolds
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L93.0: its own notes plus those printed at L93 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Lupus erythematosus NOS
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
- 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.-)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name L93.0, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Lupus Erythematosus, Discoid
a chronic form of cutaneous lupus erythematosus (lupus erythematosus, cutaneous) in which the skin lesions mimic those of the systemic form but in which systemic signs are rare. it is characterized by the presence of discoid skin plaques showing varying degrees of edema, erythema, scaliness, follicular plugging, and skin atrophy. lesions are surrounded by an elevated erythematous border. the condition typically involves the face and scalp, but widespread dissemination may occur.
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 L93.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L93.0Overview
What is the ICD-10 code for discoid lupus erythematosus?
The ICD-10-CM code for discoid lupus erythematosus is L93.0 (sometimes written as L930). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L93.0 (Lupus erythematosus) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report discoid lupus erythematosus on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L93.0 group to?
When discoid lupus erythematosus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 596, 595, with relative weights from 1.1067 to 2.0230 depending on complications. Higher weights mean higher Medicare reimbursement.
Can L93.0 be reported with A18.4?
Not as a rule. The Excludes1 note at L93, which applies to L93.0, lists "lupus exedens (A18.4)". 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).
Does L93.0 need an additional code?
When the condition applies, yes. The Use Additional Code note at L93, which applies to L93.0, reads: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5). The additional code is reported after L93.0.
Does L93.0 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: L93.0 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 317 (Discoid Lupus Erythematosus).
