ICD-10-CM > O00-O9A > O30-O48 > O35 > O35.2 O35.2 Maternal care for (suspected) hereditary disease in fetus Non-Billable/Non-Specific Type 2 Excludes chromosomal abnormality in fetus (O35.1-) Codes O35.2XX0..., not applicable or unspecifiedO35.2XX1..., fetus 1O35.2XX2..., fetus 2O35.2XX3..., fetus 3O35.2XX4..., fetus 4O35.2XX5..., fetus 5O35.2XX9..., other fetus