Burns of 90%/more of body surfc w 80-89% third degree burns

This diagnosis code signifies a severe, life-threatening burn injury affecting nearly the entire body surface. Specifically, 90% or more of the patient's total body surface area (TBSA) has sustained burns, with a significant portion (80-89%) of these burns being full-thickness (third-degree). This indicates extensive tissue destruction, often requiring critical care and prolonged hospitalization.

Apply this code for patients presenting with massive burn injuries where clinical assessment confirms 90% or greater TBSA involvement, and the majority of these burns (80-89%) are documented as third-degree. This is typically seen in catastrophic burn events, such as large-scale fires or explosions, leading to widespread and deep tissue damage.

• Ensure documentation clearly specifies both the total body surface area burned and the percentage of third-degree burns.
• Do not use this code if the percentage of third-degree burns falls outside the 80-89% range, even if TBSA is 90% or more.
• Always sequence this code as a primary diagnosis when it is the reason for the encounter.