ICD-10-CM > O00-O9A > O30-O48 > O31 > O31.3 > O31.32 O31.32 Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester Non-Billable/Non-Specific Codes O31.32X0..., not applicable or unspecifiedO31.32X1..., fetus 1O31.32X2..., fetus 2O31.32X3..., fetus 3O31.32X4..., fetus 4O31.32X5..., fetus 5O31.32X9..., other fetus