Generalized pustular psoriasis

This code represents a severe, rare form of psoriasis characterized by widespread sterile pustules on erythematous skin, often accompanied by systemic symptoms like fever, malaise, and leukocytosis. It is a distinct entity from plaque psoriasis and can be life-threatening if not promptly managed.

Assign this code for patients diagnosed with generalized pustular psoriasis, including acute generalized pustular psoriasis (von Zumbusch type). Documentation should clearly indicate the generalized nature of the pustular lesions and differentiate it from localized forms or other pustular dermatoses.

• Differentiate from localized pustular psoriasis (e.g., palmoplantar pustulosis) which has a different code.
• Always review documentation for systemic involvement, as this may necessitate additional codes for associated conditions.
• Ensure the physician's diagnosis explicitly states "generalized pustular psoriasis" or a recognized synonym like "von Zumbusch psoriasis."