T34.8 - Frostbite with tissue necrosis of ankle, foot, and toe(s)
T34.82 - Frostbite with tissue necrosis of foot
T34.821 - Frostbite with tissue necrosis of right foot
T34.822 - Frostbite with tissue necrosis of left foot
T34.829 - Frostbite with tissue necrosis of unspecified foot