Burns of 90%/more of body surfc w 20-29% third degree burns

This code signifies a severe burn injury affecting 90% or more of the patient's total body surface area. Within this extensive burn, 20-29% of the affected area is classified as third-degree, indicating full-thickness tissue destruction. This represents a critical and life-threatening injury requiring intensive medical intervention.

This code is appropriate for patients presenting with massive burn injuries covering nearly their entire body, where a significant portion (between one-fifth and just under one-third) of these burns have penetrated all layers of the skin. It should be used when the extent of total body surface area (TBSA) burned is definitively documented as 90% or greater, and the third-degree component is specifically quantified within the 20-29% range.

• Always ensure the medical record clearly documents both the total body surface area burned and the specific percentage of third-degree burns.
• Do not use this code if the percentage of third-degree burns falls outside the 20-29% range, even if the total burn area is 90% or more.
• Remember to also code for any associated complications, external causes, and specific burn sites as appropriate.