Corrosion of 3rd deg mu sites of unsp wrist and hand, subs

This code signifies a severe, full-thickness chemical burn affecting multiple areas of an unspecified wrist and hand, where the injury has progressed beyond the initial healing phase. The corrosion has damaged all layers of the skin, potentially involving underlying tissues, and the patient is receiving follow-up care for this specific injury.

Apply this code for patients presenting for subsequent treatment of a third-degree chemical burn to multiple sites of the wrist and hand. This includes scenarios such as wound care, debridement, skin grafting, or management of complications after the initial encounter for the burn.

• Ensure documentation clearly specifies "corrosion" (chemical burn) and "third degree" for all affected sites.
• Confirm the encounter is for follow-up care, not the initial treatment, as indicated by the "D" seventh character.
• Verify that multiple sites of the wrist and hand are affected and the specific location is not documented.