Papulosquamous disorders in diseases classified elsewhere

This code signifies papulosquamous skin conditions that are secondary manifestations of an underlying systemic disease. These disorders present with both papules (small, raised bumps) and scales, and their etiology is directly linked to another primary diagnosis.

Apply this code when the medical record clearly documents a papulosquamous eruption that is a known complication or feature of a separate, primary disease. Documentation should explicitly state the connection between the skin condition and the underlying systemic illness, such as psoriatic arthritis or cutaneous manifestations of lupus.

• Always sequence the underlying systemic disease first, as this code represents a manifestation of that primary condition.
• Ensure the documentation explicitly links the papulosquamous disorder to the "diseases classified elsewhere" to support code assignment.
• Do not use this code for primary papulosquamous disorders where no underlying systemic cause is identified.