Erythromelalgia

This code represents erythromelalgia, a rare neurovascular disorder characterized by paroxysmal, burning pain, warmth, and redness, typically affecting the extremities. These symptoms are often triggered by heat, exercise, or standing, and are relieved by cooling or elevation. It can be primary (idiopathic or genetic) or secondary to other conditions.

Use this code when documentation clearly indicates a diagnosis of erythromelalgia, regardless of its primary or secondary nature. This code is appropriate for both the initial diagnosis and subsequent encounters for management of the condition. Supporting documentation should include physician notes detailing the characteristic symptoms and diagnostic findings.

• Differentiate from other conditions causing red, painful extremities, such as cellulitis or complex regional pain syndrome (CRPS).
• If erythromelalgia is secondary to another condition (e.g., myeloproliferative disorder), sequence the underlying condition first, followed by this code.
• Ensure the documentation specifies "erythromelalgia" to avoid confusion with other peripheral vascular disorders.