Icd 10 code for l5 s1 anterolisthesis July 8, 2019 16 32 64 128 Icd 10 code for anterolisthesis of l5 over s1 Icd 10 code for grade 2 anterolisthesis of l5 on s1 Icd 10 cm code for grade 1 anterolisthesis of l5 on s1 L4-l5 anterolisthesis icd 10