S88.02 - Partial traumatic amputation at knee level S88.0 - Traumatic amputation at knee level S88.02 - Partial traumatic amputation at knee level S88.021 - Partial traumatic amputation at knee level, right lower leg S88.022 - Partial traumatic amputation at knee level, left lower leg S88.029 - Partial traumatic amputation at knee level, unspecified lower leg