O41.9 - Disorder of amniotic fluid and membranes, unspecified O41 - Other disorders of amniotic fluid and membranes O41.9 - Disorder of amniotic fluid and membranes, unspecified O41.90 - Disorder of amniotic fluid and membranes, unspecified, unspecified trimester O41.91 - Disorder of amniotic fluid and membranes, unspecified, first trimester O41.92 - Disorder of amniotic fluid and membranes, unspecified, second trimester O41.93 - Disorder of amniotic fluid and membranes, unspecified, third trimester