Polyhydramnios, first trimester, fetus 5

This code signifies an excessive accumulation of amniotic fluid surrounding the fetus during the first trimester of pregnancy, specifically affecting fetus 5 in a multiple gestation. Polyhydramnios can be idiopathic or associated with maternal conditions like diabetes, or fetal anomalies such as gastrointestinal obstructions or central nervous system defects.

Apply this code when documentation clearly indicates a diagnosis of polyhydramnios occurring in the first trimester of a multiple gestation pregnancy, and the condition is specifically attributed to the fifth fetus. Supporting documentation would include ultrasound reports detailing amniotic fluid index (AFI) measurements or deepest vertical pocket (DVP) exceeding normal limits for the gestational age, along with identification of the affected fetus.

• Ensure the documentation specifies "first trimester" and clearly identifies "fetus 5" for accurate code assignment.
• Do not confuse with polyhydramnios occurring in later trimesters, which have different code assignments.
• Always sequence this code after the primary obstetric code indicating the pregnancy itself.