T31.3 - Burns involving 30-39% of body surface T31 - Burns classified according to extent of body surface involved T31.3 - Burns involving 30-39% of body surface
T31.30 - Burns involving 30-39% of body surface with 0% to 9% third degree burns T31.31 - Burns involving 30-39% of body surface with 10-19% third degree burns T31.32 - Burns involving 30-39% of body surface with 20-29% third degree burns T31.33 - Burns involving 30-39% of body surface with 30-39% third degree burns