Burns of 80-89% of body surface w 20-29% third degree burns

This code signifies a severe burn injury affecting a very large portion of the patient's total body surface area (TBSA), specifically between 80% and 89%. Within this extensive burn, a significant component, 20% to 29% of the TBSA, is classified as full-thickness (third-degree) burns, indicating deep tissue destruction.

Assign this code for patients presenting with extensive burn injuries where the total body surface area involved is documented as 80-89%, and the third-degree component is precisely quantified as 20-29% of the TBSA. This is typically seen in critical burn cases requiring intensive care and specialized burn unit management.

• Ensure documentation clearly specifies both the total burn surface area and the percentage of third-degree burns.
• Do not use this code if the percentages for total burn or third-degree burns fall outside the specified ranges.
• Always sequence this code as a primary diagnosis when it represents the reason for admission or primary treatment.