ICD-10-CM > O00-O9A > O30-O48 > O41 > O41.8 > O41.8X > O41.8X9 O41.8X9 Other specified disorders of amniotic fluid and membranes, unspecified trimester Non-Billable/Non-Specific Codes O41.8X90..., not applicable or unspecifiedO41.8X91..., fetus 1O41.8X92..., fetus 2O41.8X93..., fetus 3O41.8X94..., fetus 4O41.8X95..., fetus 5O41.8X99..., other fetus