Corrosion of third degree of left hand, unsp site, subs

This code signifies a severe burn injury, specifically a third-degree corrosion, affecting an unspecified area of the patient's left hand. Third-degree burns involve full-thickness destruction of the skin and underlying tissue. The "corrosion" aspect indicates the injury was caused by a chemical agent.

Apply this code when documenting a patient presenting for follow-up care, such as wound checks, dressing changes, or physical therapy, for a previously diagnosed third-degree chemical burn to their left hand. This code is appropriate for any encounter after the initial treatment of the injury.

• Ensure documentation clearly specifies "corrosion" as the cause of the burn, not thermal.
• Verify the encounter is for subsequent care, not the initial treatment of the burn.
• Confirm the burn is indeed third-degree and located on the left hand.