T35: Frostbite involving multiple body regions and unspecified frostbite

T35.5: Unspecified frostbite of lower limb

Frostbite involves tissue being damaged by cold.

Depending on how severe the frostbite is, there can be a variety of symptoms. The skin may be pale, or blisters might form. The tissue may die off, as well. If the frostbite damages nerves, it may no longer be possible to feel pain.