O88.213 Thromboembolism in pregnancy, third trimester

Name of the Condition

• Thromboembolism in pregnancy, third trimester

Summary

Thromboembolism in pregnancy, third trimester, is a condition where blood clots form and travel through the bloodstream, potentially obstructing blood vessels. It is a significant obstetric complication that can affect both maternal and fetal health, requiring prompt recognition and management during the late stages of pregnancy.

Causes

Thromboembolism in pregnancy typically arises from a combination of hypercoagulability, venous stasis, and vascular injury, which are exacerbated by pregnancy-related physiological changes. Clots may originate in deep veins (e.g., lower extremities) or other sites and embolize to the lungs or other organs during the third trimester.

Risk Factors

• Prolonged immobility or bed rest.
• History of thromboembolism or thrombophilia.
• Obesity or advanced maternal age.
• Multiple gestation or preeclampsia.
• Cesarean delivery or other obstetric surgery.
• Use of assisted reproductive technology.

Symptoms

• Sudden onset of dyspnea, chest pain, or shortness of breath.
• Cough, hemoptysis, or pleuritic pain.
• Swelling, pain, or tenderness in the legs.
• Unexplained tachycardia or hypotension.
• Neurological symptoms (e.g., dizziness, syncope).

Diagnosis

Diagnosis involves clinical evaluation, imaging (e.g., Doppler ultrasound for deep vein thrombosis, CT pulmonary angiography for pulmonary embolism), and laboratory tests (e.g., D-dimer). A high index of suspicion is critical given the condition’s potential for rapid progression.

Treatment Options

Treatment typically includes anticoagulant therapy (e.g., heparin) to prevent clot extension and embolization. Management may also involve supportive care, such as oxygen therapy or hemodynamic support, and close monitoring of both maternal and fetal status.

Prognosis and Follow-Up

With prompt diagnosis and appropriate treatment, outcomes for thromboembolism in pregnancy, third trimester, can be favorable. Follow-up care includes ongoing anticoagulation monitoring, assessment of fetal well-being, and evaluation for underlying thrombophilic conditions.

Complications

Complications may include pulmonary embolism, post-thrombotic syndrome, or adverse fetal outcomes (e.g., preterm birth, growth restriction). Severe cases can lead to maternal cardiovascular collapse or death.

Lifestyle & Prevention

• Maintain regular physical activity (as advised by a healthcare provider).
• Avoid prolonged immobility; take breaks during long periods of sitting or standing.
• Stay hydrated and manage weight within a healthy range.
• Follow prescribed anticoagulant therapy and attend all prenatal appointments.

When to Seek Professional Help

Seek immediate medical attention if experiencing sudden chest pain, severe shortness of breath, leg swelling, or unexplained tachycardia. Prompt evaluation is critical to prevent life-threatening complications.

Tips for Medical Coders

Document the trimester (third trimester) and confirm the thromboembolic event occurred during pregnancy. Ensure clinical documentation supports the diagnosis and links the condition to pregnancy-related factors. Code O88.213 is specific to thromboembolism in the third trimester of pregnancy.