ICD-10-CM

T31: Burns classified according to extent of body surface involved

T31.2: Burns involving 20-29% of body surface

T31.20: Burns involving 20-29% of body surface with 0% to 9% third degree burns

T31.21: Burns involving 20-29% of body surface with 10-19% third degree burns

T31.22: Burns involving 20-29% of body surface with 20-29% third degree burns