Oligohydramnios, third trimester, fetus 4

This code signifies a reduced amount of amniotic fluid surrounding the fetus during the third trimester of pregnancy, specifically when there are four fetuses present. Oligohydramnios can lead to complications such as fetal compression, pulmonary hypoplasia, and umbilical cord compression.

Apply this code when documentation confirms oligohydramnios in a multifetal gestation involving quadruplets, and the condition is identified during the third trimester. Supporting documentation includes ultrasound reports detailing amniotic fluid index (AFI) or deepest vertical pocket (DVP) measurements below established norms for the gestational age, along with a confirmed pregnancy of four fetuses.

• Ensure the documentation clearly specifies the third trimester and the presence of four fetuses.
• Do not use this code if the oligohydramnios is due to premature rupture of membranes (PROM); a more specific code for PROM should be used.
• Sequence this code after any code identifying the specific type of multifetal gestation (e.g., O30.2- for quadruplet pregnancy).