Discoid lupus erythematosus

This code represents a chronic, inflammatory autoimmune disease primarily affecting the skin, characterized by coin-shaped, erythematous, scaly plaques that can lead to scarring, atrophy, and pigmentary changes. It is a specific, localized form of cutaneous lupus erythematosus, typically without systemic involvement.

Apply this code when documentation clearly indicates a diagnosis of discoid lupus erythematosus, often presenting with characteristic skin lesions on sun-exposed areas like the face, scalp, and ears. This diagnosis is typically made clinically, sometimes supported by skin biopsy findings.

• Differentiate from systemic lupus erythematosus (SLE) (M32.-) unless there is clear documentation of both conditions.
• Do not use for other forms of cutaneous lupus, such as subacute cutaneous lupus erythematosus (L93.1) or lupus erythematosus profundus (L93.2).
• Ensure the provider's documentation specifies "discoid" to support the use of this precise code.