ICD-10-CM > O00-O9A > O30-O48 > O35 > O35.0 > O35.07 O35.07 Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly Non-Billable/Non-Specific Codes O35.07X0..., not applicable or unspecifiedO35.07X1..., fetus 1O35.07X2..., fetus 2O35.07X3..., fetus 3O35.07X4..., fetus 4O35.07X5..., fetus 5O35.07X9..., other fetus