I80-I89: Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified

I83: Varicose veins of lower extremities

Varicose veins of lower extremities refer to a group of conditions affecting the veins in the legs and feet. These conditions are caused by malfunctioning valves in the veins that prevent blood from flowing properly, leading to the swelling and twisting of veins that are characteristic of this condition. The dysfunctions are often linked to prolonged standing or sitting, age, obesity, pregnancy, or a genetic predisposition to weak vein walls or vein valve deficiencies. Common symptoms of varicose veins include bulging, twisted veins that may be blue or dark purple in color, aching legs, a swollen ankle or foot, and muscle cramping or throbbing in the lower limbs. Left untreated, varicose veins may result in changes in the skin of the lower leg, including discoloration and possible ulcer formations. The circulatory system is primarily affected by these conditions.