Corros 70-79% of body surface w 0% to 9% third degree corros

This code signifies a severe chemical or electrical burn (corrosion) affecting a substantial portion of the body, specifically between 70% and 79% of the total body surface area. Crucially, while extensive, the most severe full-thickness (third-degree) damage is limited to less than 10% of the affected area. This indicates widespread superficial to partial-thickness injury with only minor areas of full-thickness tissue destruction.

Use this code for patients presenting with extensive chemical or electrical burns covering 70-79% of their body, where the majority of the injury is superficial or partial-thickness. This would apply to scenarios such as industrial accidents involving corrosive agents or high-voltage electrical incidents resulting in widespread but predominantly non-full-thickness tissue damage.

• Ensure the physician documentation clearly specifies the percentage of total body surface area affected by corrosion (70-79%).
• Verify that the documentation also indicates that less than 10% of the affected area has sustained third-degree damage.
• Remember to also code the external cause of the corrosion (e.g., chemical exposure, electrical current) for a complete picture.