Cutaneous mucormycosis

This code signifies a fungal infection of the skin and subcutaneous tissues caused by molds of the order Mucorales. It presents as necrotic lesions, ulcers, or plaques, often with a black eschar, and can rapidly progress in immunocompromised individuals.

Apply this code when documentation confirms a diagnosis of mucormycosis specifically affecting the skin. This typically involves histopathological confirmation of fungal elements in tissue biopsies from cutaneous lesions.

• Ensure documentation specifies "cutaneous" involvement; other forms of mucormycosis (e.g., pulmonary, rhinocerebral) have different codes.
• Always look for underlying conditions (e.g., diabetes, immunosuppression) that may need to be coded as contributing factors.
• Do not confuse with other fungal skin infections like aspergillosis or candidiasis, which have distinct ICD-10-CM codes.