Corrosion of unsp deg mult sites of unsp ank/ft, subs

This code signifies a chemical burn affecting multiple areas of the ankle and foot, where the specific severity (e.g., first, second, or third degree) of the burn is not documented. It indicates that the patient is receiving follow-up care for this injury after the initial treatment.

Apply this code when a patient presents for ongoing management, such as wound care, dressing changes, or evaluation of healing, for a chemical burn to their ankle and foot. This is appropriate when the initial encounter for the injury has already been coded and the degree of the burn was not specified.

• Ensure documentation clearly states "subsequent encounter" for the chemical burn.
• Only use when the specific degree of corrosion is unknown or not documented.
• Always look for more specific codes if the degree of corrosion and/or specific site (e.g., right ankle, left foot) is identified.