ICD-10-CM > O00-O9A > O30-O48 > O35 > O35.1 > O35.10 O35.10 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified Non-Billable/Non-Specific Codes O35.10X0..., not applicable or unspecifiedO35.10X1..., fetus 1O35.10X2..., fetus 2O35.10X3..., fetus 3O35.10X4..., fetus 4O35.10X5..., fetus 5O35.10X9..., other fetus