Corrosion of 2nd deg mul sites of left wrist and hand, subs

This code signifies a second-degree chemical burn affecting multiple areas of the left wrist and hand. It indicates damage extending through the epidermis and into the dermis, characterized by blistering, pain, and redness, resulting from exposure to a corrosive substance.

Apply this code when documenting follow-up care for a patient previously treated for a second-degree chemical burn to multiple sites of the left wrist and hand. This includes subsequent office visits, wound care, or monitoring of healing after the initial treatment phase.

• Ensure the documentation clearly specifies "multiple sites" of the left wrist and hand, not just a single area.
• Verify that the encounter is indeed "subsequent" and not the initial treatment for the corrosion.
• Confirm the burn is explicitly identified as a "corrosion" (chemical burn) and not a thermal burn.