Oligohydramnios, first trimester, fetus 5

This code signifies a reduced amount of amniotic fluid surrounding the fetus during the first trimester of pregnancy, specifically affecting the fifth fetus in a multiple gestation. Oligohydramnios can indicate underlying fetal or maternal issues and requires close monitoring.

Apply this code when documentation confirms oligohydramnios diagnosed in the first trimester (up to 13 weeks and 6 days gestation) for the fifth fetus in a multifetal pregnancy. Supporting documentation includes ultrasound reports detailing amniotic fluid index (AFI) or deepest vertical pocket (DVP) measurements below established norms for gestational age, along with clear identification of the affected fetus.

• Ensure the documentation explicitly identifies "fetus 5" in a multiple gestation.
• Verify the gestational age falls within the first trimester (0-13 weeks 6 days); otherwise, a different trimester-specific code is required.
• Do not confuse with codes for polyhydramnios or codes for oligohydramnios in later trimesters.