Burns of 40-49% of body surface w 10-19% third degree burns

This code signifies a severe burn injury affecting a significant portion of the body, specifically 40-49% of the total body surface area. Within this extensive burn, a substantial portion, 10-19%, is classified as full-thickness (third-degree) burns, indicating damage through all layers of the skin. The remaining burn area would be partial-thickness (first or second degree).

Apply this code for patients presenting with extensive burn injuries where the total body surface area (TBSA) involved is between 40% and 49%, and the third-degree component of these burns is precisely between 10% and 19% of the TBSA. This is typically seen in major burn trauma cases requiring specialized care.

• Ensure accurate documentation of both total body surface area burned and the specific percentage of third-degree burns.
• Do not use this code if the third-degree burn percentage falls outside the 10-19% range, even if the total TBSA is within 40-49%.
• Always sequence this code first when it represents the primary reason for the encounter, followed by codes for specific burn sites if applicable.