Eosinophilic cellulitis [Wells]

This code represents eosinophilic cellulitis, also known as Wells' syndrome, a rare inflammatory skin condition characterized by recurrent, intensely pruritic, erythematous plaques and nodules. Histologically, it presents with a prominent eosinophilic infiltrate in the dermis, often with "flame figures."

Use this code when documentation explicitly states a diagnosis of eosinophilic cellulitis or Wells' syndrome. This diagnosis is typically made based on clinical presentation and confirmed by skin biopsy showing characteristic eosinophilic infiltration.

• Ensure the physician documentation clearly specifies "eosinophilic cellulitis" or "Wells' syndrome" to support this specific code.
• Do not confuse this with bacterial cellulitis (L03.-) or other forms of dermatitis; the eosinophilic nature is key.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter.