ICD-10-CM > O00-O9A > O30-O48 > O36 > O36.9 O36.9 Maternal care for fetal problem, unspecified Non-Billable/Non-Specific Codes O36.90Maternal care for fetal problem, unspecified, unspecified trimesterO36.90X0..., not applicable or unspecifiedO36.90X1..., fetus 1O36.90X2..., fetus 2O36.90X3..., fetus 3O36.90X4..., fetus 4O36.90X5..., fetus 5O36.90X9..., other fetusO36.91Maternal care for fetal problem, unspecified, first trimesterO36.91X0..., not applicable or unspecifiedO36.91X1..., fetus 1O36.91X2..., fetus 2O36.91X3..., fetus 3O36.91X4..., fetus 4O36.91X5..., fetus 5O36.91X9..., other fetusO36.92Maternal care for fetal problem, unspecified, second trimesterO36.92X0..., not applicable or unspecifiedO36.92X1..., fetus 1O36.92X2..., fetus 2O36.92X3..., fetus 3O36.92X4..., fetus 4O36.92X5..., fetus 5O36.92X9..., other fetusO36.93Maternal care for fetal problem, unspecified, third trimesterO36.93X0..., not applicable or unspecifiedO36.93X1..., fetus 1O36.93X2..., fetus 2O36.93X3..., fetus 3O36.93X4..., fetus 4O36.93X5..., fetus 5O36.93X9..., other fetus