Lupus erythematosus (L93) ICD-10-CM
The L93 code range covers lupus erythematosus with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the L93 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L93 range.
Lupus Erythematosus
An autoimmune, connective tissue chronic inflammatory disorder affecting the skin, joints, kidneys, lungs, heart, and the peripheral blood cells. It is more commonly seen in women than men. Variants include discoid and systemic lupus erythematosus.
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.
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.
About the L93 Code Range
Lupus erythematosus is a long-lasting inflammatory disorder in which the immune system reacts against the body’s own tissues. This category focuses on skin-related and local forms.
The subdivisions distinguish discoid lupus (L93.0), subacute skin lupus (L93.1), and other local lupus (L93.2).
Questions About This Page
How many billable codes are in the L93 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the L93 range classify?
The range classifies lupus erythematosus. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
