T35: Frostbite involving multiple body regions and unspecified frostbite

Frostbite is a cold-related injury that occurs when skin and underlying tissues freeze. This typically happens after prolonged exposure to very cold temperatures or contact with extremely cold materials. The ICD-10 group termed 'Frostbite involving multiple body regions and unspecified frostbite' specifically identifies cases where frostbite affects more than one part of the body or the affected area is not clearly specified. Common symptoms include a cold and prickly feeling in the skin, numbness, and hardening or pale coloration of the skin. Over time, blistering and blackening of the skin may occur. The extremities such as the fingers, toes, ears, and nose are most often involved as these areas are farther from the heart and may not receive adequate blood supply in extremely cold conditions. Note that frostbite is potentially severe and can progress rapidly, leading to permanent skin damage or even tissue death.