Lupus erythematosus (L93)
The ICD-10 code section L93 covers various forms of lupus erythematosus, a group of autoimmune skin conditions. These codes help identify specific types such as discoid, subacute cutaneous, and other localized lupus variants.
The main code L93 refers broadly to lupus erythematosus. Code L93.0 is used specifically for discoid lupus erythematosus, recognized by chronic skin lesions often called lupus erythematosus chronicus or familial chilblain lupus erythematosus. This includes various manifestations like scalp, face, and mucous membrane involvement. The code L93.1 identifies subacute cutaneous lupus erythematosus, known also by terms such as anetoderma or the annular/polycyclic type, featuring skin lesions that are distinct from discoid lupus. Lastly, L93.2 captures other localized forms like lupus erythematosus profundus and tumidus, often involving deeper skin layers or vasculitis. Medical coders use these specific ICD-10 codes for accurate documentation and treatment planning of lupus-related skin disorders.
Diseases of the skin and subcutaneous tissue (L00–L99)
Other disorders of the skin and subcutaneous tissue (L80-L99)
L93 Lupus erythematosus
- L93.0 Discoid lupus erythematosus
- L93.1 Subacute cutaneous lupus erythematosus
- L93.2 Other local lupus erythematosus
Lupus erythematosus (L93)
Instructional Notations
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.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
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.
