O71.0 Rupture of uterus (spontaneous) before onset of labor

Name of the Condition

• Rupture of Uterus (Spontaneous) Before Onset of Labor
• ICD Code: O71.0

Summary

Spontaneous rupture of the uterus before the onset of labor is a rare but serious obstetric complication where the uterine wall tears without prior labor. This condition requires immediate medical intervention due to the risk of severe hemorrhage and maternal-fetal harm.

Causes

Spontaneous uterine rupture before labor may result from weakened uterine tissue, such as from prior uterine surgery (e.g., cesarean delivery), uterine overdistension (e.g., multiple gestation or polyhydramnios), or congenital uterine abnormalities. Trauma or intense uterine contractions (e.g., from oxytocin use) can also contribute.

Risk Factors

• Prior uterine surgery, including cesarean delivery or myomectomy.
• Multiple pregnancies or polyhydramnios.
• Congenital uterine anomalies (e.g., bicornuate uterus).
• Prolonged or intense uterine contractions (e.g., from oxytocin).
• Advanced maternal age or multiparity.

Symptoms

• Sudden, severe abdominal pain.
• Vaginal bleeding or hemorrhage.
• Fetal distress (e.g., abnormal heart rate).
• Signs of shock (e.g., hypotension, tachycardia).
• Abdominal tenderness or rigidity.

Diagnosis

Diagnosis is based on clinical presentation, including sudden pain, bleeding, and fetal distress, confirmed by ultrasound or physical examination. Imaging may reveal uterine wall discontinuity or free fluid in the abdomen. Laboratory tests assess hemoglobin levels and coagulation status.

Treatment Options

• Emergency surgical repair or hysterectomy to control bleeding.
• Blood transfusion and hemodynamic stabilization.
• Antibiotics to prevent infection.
• Fetal monitoring and delivery if viable.

Prognosis and Follow-Up

Prognosis depends on the extent of rupture, timing of intervention, and maternal-fetal status. Prompt treatment improves outcomes, but severe cases may result in hysterectomy or long-term complications. Follow-up includes monitoring for infection, anemia, and future pregnancy risks.

Complications

• Severe maternal hemorrhage or shock.
• Fetal demise or neonatal morbidity.
• Uterine scarring or infertility.
• Infection or sepsis.
• Long-term psychological impact.

Lifestyle & Prevention

• Avoid high-risk activities (e.g., heavy lifting) in late pregnancy.
• Manage conditions like polyhydramnios or multiple gestation under medical supervision.
• Discuss prior uterine surgery with healthcare providers for pregnancy planning.

When to Seek Professional Help

Seek immediate care for sudden severe abdominal pain, vaginal bleeding, or signs of shock during pregnancy. Prompt evaluation is critical to prevent life-threatening complications.

Tips for Medical Coders

Document the timing (before labor onset), spontaneity, and clinical findings (e.g., hemorrhage, fetal distress) to support coding. Include details of prior uterine surgery or risk factors if relevant. Ensure documentation aligns with the clinical definition of spontaneous rupture.