Corros 2nd deg mul sites of unsp lower limb, ex ank/ft, subs

This code signifies a second-degree burn, specifically a corrosion, affecting multiple areas of the lower limb, excluding the ankle and foot. It indicates that the patient is receiving follow-up care for this injury, rather than initial treatment. Such injuries involve damage through the epidermis and into the dermis, characterized by blistering and significant pain.

Apply this code when documenting subsequent encounters for a patient being treated for chemical or electrical burns that resulted in second-degree damage to various sites on the thigh, knee, or lower leg. This is appropriate for office visits, wound care, or other follow-up appointments after the initial treatment of the corrosion.

• Ensure the documentation clearly specifies "corrosion" (chemical or electrical burn) and not a thermal burn.
• Verify that the burn is explicitly described as second-degree and affects multiple, non-contiguous sites on the lower limb, excluding the ankle and foot.
• Confirm that the encounter is for ongoing care or follow-up, not the initial treatment of the injury.