ICD-10-CM > O00-O9A > O30-O48 > O35 > O35.0 > O35.08 O35.08 Maternal care for (suspected) central nervous system malformation or damage in fetus, spina bifida Non-Billable/Non-Specific Codes O35.08X0..., not applicable or unspecifiedO35.08X1..., fetus 1O35.08X2..., fetus 2O35.08X3..., fetus 3O35.08X4..., fetus 4O35.08X5..., fetus 5O35.08X9..., other fetus