Erysipelas

This code represents erysipelas, a superficial bacterial skin infection characterized by a well-demarcated, erythematous, edematous, and painful rash, typically affecting the face or lower extremities. It is caused by Streptococcus pyogenes and involves the upper dermis and superficial lymphatic vessels.

Assign this code for documented cases of erysipelas based on clinical presentation and physical examination findings. Supporting documentation should clearly describe the characteristic rash, location, and any associated systemic symptoms like fever or chills.

• Differentiate from cellulitis (681.xx, 682.xx), which involves deeper dermal and subcutaneous tissues and has less distinct borders.
• Code any underlying conditions contributing to the infection (e.g., lymphedema, venous insufficiency) as secondary diagnoses.
• Do not use for other forms of streptococcal skin infections unless specifically diagnosed as erysipelas.