Dermatophytosis of foot

This code signifies a fungal infection affecting the skin of the foot, commonly known as athlete's foot. It is caused by dermatophytes, which are fungi that thrive in warm, moist environments, leading to symptoms such as itching, scaling, redness, and sometimes blistering.

Apply this code when documentation clearly indicates a diagnosis of tinea pedis or athlete's foot. This diagnosis is typically made based on clinical examination, but may be supported by mycological studies or potassium hydroxide (KOH) preparations confirming fungal elements.

• Differentiate from other non-fungal foot rashes, such as contact dermatitis or eczema, which require different codes.
• Do not use for fungal infections of the nails (onychomycosis), which have specific codes.
• Ensure the documentation specifies the foot as the affected anatomical site.