Corros 80-89% of body surface w 50-59% third degree corros

This code signifies a severe chemical or thermal injury affecting a very large portion of the body, specifically 80-89% of the total body surface area. A significant component of this injury, 50-59%, involves full-thickness tissue destruction, indicating damage to all layers of the skin and potentially underlying tissues.

Apply this code for patients presenting with extensive corrosive injuries, such as those from strong acids, alkalis, or severe heat, where the total affected body surface area falls within the 80-89% range. This code is appropriate when a substantial portion of that injury (50-59%) is documented as third-degree, characterized by eschar formation, nerve damage, and often a waxy or leathery appearance.

• Ensure documentation clearly specifies both the total body surface area affected by corrosion and the percentage of that area that is third-degree.
• Do not use this code if the total body surface area or the third-degree percentage falls outside the specified ranges.
• Remember to code any associated external cause of injury (e.g., chemical exposure, fire) and place of occurrence codes.