Carbuncle of unspecified foot

This code signifies a carbuncle, which is a severe pyogenic infection of the skin and subcutaneous tissue, typically involving a cluster of interconnected boils. It specifically localizes this infection to an unspecified foot, indicating the exact foot (left or right) is not documented.

Use this code when documentation clearly states a carbuncle is present on the patient's foot, but the laterality (left or right) is not specified. This code is appropriate for initial encounters, subsequent encounters, and sequelae of the carbuncle.

• Ensure documentation explicitly states "carbuncle" and not a simple "boil" or "furuncle," as these have different codes.
• Avoid using this code if the medical record specifies which foot is affected; instead, select the more specific laterality code.
• Consider an additional code for any associated cellulitis or abscess, if documented.