ICD-10-CM > O00-O9A > O30-O48 > O35 > O35.6 O35.6 Maternal care for (suspected) damage to fetus by radiation Non-Billable/Non-Specific Codes O35.6XX0..., not applicable or unspecifiedO35.6XX1..., fetus 1O35.6XX2..., fetus 2O35.6XX3..., fetus 3O35.6XX4..., fetus 4O35.6XX5..., fetus 5O35.6XX9..., other fetus