Corrosion of third degree of scalp, subsequent encounter

This code signifies a full-thickness injury to the scalp, resulting from chemical exposure, that is being treated during a follow-up visit. The corrosion has damaged all layers of the skin and potentially underlying tissues, indicating a severe chemical burn.

Apply this code when documenting the ongoing management of a third-degree chemical burn to any part of the scalp, after the initial treatment has been rendered. This includes subsequent hospitalizations, outpatient visits for wound care, or follow-up appointments to monitor healing and complications.

• Ensure documentation clearly specifies "corrosion" (chemical burn) rather than a thermal burn.
• Confirm the encounter is not the initial treatment for the injury.
• Verify the burn depth is explicitly stated as "third degree" in the medical record.