As of 2017, codes 4403 23 910 0, 4403 23 990 0, 4403 24 900 0, 4403 25 910 0,  4403 25 990 0, and  4403 26 000 replace previous codes 4403 20 910 1,  4403 20 910 2, 4403 20 910 3,  4403 20 910 4,  4403 20 910 9,  4403 20 990 1, and  4403 20 990 9.