Subcutaneous pheomycotic abscess and cyst

This code represents a localized collection of fungal infection (pheomycosis) forming an abscess or cyst within the subcutaneous tissue. These lesions are characterized by the presence of dematiaceous fungi, which produce melanin and often appear as dark-pigmented hyphae or yeast-like cells.

Use this code when documentation specifies a subcutaneous abscess or cyst caused by pheomycosis. This typically involves a biopsy or culture confirming the presence of dematiaceous fungi in a subcutaneous lesion. It is appropriate for both primary infections and secondary manifestations in immunocompromised patients.

• Ensure documentation explicitly states "subcutaneous" and identifies the causative agent as pheomycosis or a dematiaceous fungus.
• Do not use for superficial fungal infections or deep organ mycoses; this code is specific to subcutaneous involvement.
• Consider additional codes for underlying conditions contributing to immunosuppression, if applicable.