Oth disrd of amniotic fluid and membrns, first tri, fetus 4

This code signifies any non-specific abnormality of the amniotic fluid or membranes, such as polyhydramnios or oligohydramnios, or other membrane disorders, occurring during the first trimester of pregnancy. It specifically applies when the condition is identified in the fourth fetus of a multiple gestation.

Use this code when documentation clearly indicates a specified, but not otherwise classified, disorder of the amniotic fluid or membranes in the first trimester. This code is appropriate for the fourth fetus in a multifetal pregnancy when the specific disorder is not covered by more precise codes (e.g., O40, O41.0-O41.1). Documentation should specify the trimester and the affected fetus.

• Ensure the medical record clearly identifies the first trimester and that the condition pertains to the fourth fetus.
• Do not use this code if a more specific code for an amniotic fluid or membrane disorder is available.
• Always sequence this code as a secondary diagnosis following the primary code for the pregnancy.