T33.81 - Superficial frostbite of ankle T33.8 - Superficial frostbite of ankle, foot, and toe(s) T33.81 - Superficial frostbite of ankle T33.811 - Superficial frostbite of right ankle T33.812 - Superficial frostbite of left ankle T33.819 - Superficial frostbite of unspecified ankle