Burns of 90%/more of body surfc w 40-49% third degree burns

This code signifies an extensive burn injury affecting at least 90% of the patient's total body surface area (TBSA). Within this widespread burn, a significant portion, specifically 40% to 49%, is classified as full-thickness (third-degree) burns. Such injuries are life-threatening and require immediate, aggressive medical intervention.

Apply this code for patients presenting with severe, widespread burns where the total body surface area involved is 90% or greater, and the full-thickness component accounts for 40% to 49% of the TBSA. This is typically used in acute care settings for initial assessment and ongoing management of critical burn patients.

• Always ensure documentation clearly specifies both the total burn surface area and the percentage of third-degree burns.
• This code is for the extent of the burn; additional codes for specific burn sites (e.g., T20-T25) and external cause codes are also required.
• Do not use this code if the percentage of third-degree burns is outside the 40-49% range, even if the total body surface area is 90% or more.