T34.81 - Frostbite with tissue necrosis of ankle T34.8 - Frostbite with tissue necrosis of ankle, foot, and toe(s) T34.81 - Frostbite with tissue necrosis of ankle T34.811 - Frostbite with tissue necrosis of right ankle T34.812 - Frostbite with tissue necrosis of left ankle T34.819 - Frostbite with tissue necrosis of unspecified ankle