O30.223 Quadruplet pregnancy with two or more monoamniotic fetuses, third trimester

Name of the Condition

• Quadruplet pregnancy with two or more monoamniotic fetuses, third trimester

Summary

Quadruplet pregnancy with two or more monoamniotic fetuses in the third trimester involves a gestation with four fetuses, where at least two share both a single placenta and a single amniotic sac, and the pregnancy is in the third trimester (28 weeks to delivery). This condition requires specialized prenatal care due to elevated risks for both the mother and fetuses, including complications related to monoamnionicity such as cord entanglement. Monitoring focuses on fetal growth, placental health, and maternal well-being.

Causes

Quadruplet pregnancies typically occur when multiple eggs are fertilized (dizygotic) or a single fertilized egg splits (monozygotic). Fertility treatments, such as assisted reproductive technology (ART), can increase the likelihood of multiple embryos implanting. Monoamnionicity arises when a single fertilized egg splits, resulting in fetuses sharing both a placenta and an amniotic sac.

Risk Factors

• Advanced maternal age (over 35 years)
• Family history of multiple gestation
• Use of fertility medications or assisted reproductive technology (ART)
• Higher parity (prior pregnancies)

Symptoms

• Rapid uterine growth beyond expected gestational age
• Increased maternal weight gain
• Severe morning sickness or hyperemesis gravidarum
• Sensation of fetal movement earlier than typical

Diagnosis

Diagnosis is confirmed via ultrasound, which visualizes four fetuses and their placentas, and identifies monoamnionicity in at least two fetuses. Prenatal care includes monitoring for complications like preterm labor or growth restrictions. Additional assessments may evaluate chorionicity and amnionicity.

Treatment Options

Management focuses on close monitoring, nutritional support, and addressing complications as they arise. Care may involve specialized obstetric care, frequent ultrasounds, and planning for delivery timing and method.

Prognosis and Follow-Up

Prognosis depends on fetal growth, placental health, and maternal condition. Follow-up includes regular prenatal visits, fetal monitoring, and preparation for potential complications. Delivery timing and method are determined based on maternal and fetal status.

Complications

• Preterm labor and delivery
• Fetal growth restriction
• Cord entanglement or compression
• Placental abnormalities
• Maternal complications (e.g., preeclampsia, anemia)

Lifestyle & Prevention

• Regular prenatal care
• Balanced nutrition and prenatal vitamins
• Avoiding tobacco, alcohol, and illicit drugs
• Managing stress and rest

When to Seek Professional Help

Seek immediate medical attention for symptoms like vaginal bleeding, severe abdominal pain, reduced fetal movement, or signs of preterm labor (e.g., regular contractions, pelvic pressure).

Tips for Medical Coders

Use this code for a quadruplet pregnancy with two or more monoamniotic fetuses in the third trimester. Ensure documentation specifies the number of fetuses, monoamnionicity, and trimester. Verify that the pregnancy is confirmed and not terminated or delivered.