O14.23 HELLP syndrome (HELLP), third trimester

Name of the Condition

• HELLP syndrome (HELLP), third trimester

Summary

HELLP syndrome is a pregnancy-related complication characterized by hemolysis (breakdown of red blood cells), elevated liver enzymes, and low platelet count. It typically occurs in the third trimester and is considered a severe form of pre-eclampsia. Prompt recognition and management are critical due to the risk of maternal and fetal complications.

Causes

The exact cause of HELLP syndrome is not fully understood, but it is thought to involve abnormalities in the placenta, such as insufficient blood flow or endothelial dysfunction. Genetic, immunological, and vascular factors may also contribute to its development, similar to pre-eclampsia.

Risk Factors

• History of pre-eclampsia or HELLP syndrome in previous pregnancies.
• Chronic hypertension, diabetes, or kidney disease.
• Obesity or advanced maternal age.
• Multiple gestation (e.g., twins or triplets).
• Autoimmune disorders like lupus.
• First pregnancy or new partner.

Symptoms

• Severe upper abdominal pain or tenderness.
• Nausea, vomiting, or malaise.
• Headaches or visual disturbances.
• Swelling (edema) in the hands, face, or legs.
• Fatigue or weakness.
• Bleeding or bruising due to low platelet count.

Diagnosis

Diagnosis is based on laboratory tests showing hemolysis (elevated bilirubin or LDH), elevated liver enzymes (AST/ALT), and low platelet count (thrombocytopenia). Clinical evaluation of symptoms, such as upper abdominal pain or hypertension, is also essential. Additional tests, such as blood pressure monitoring or urine protein assessment, may be used to confirm associated pre-eclampsia.

Treatment Options

Treatment focuses on managing symptoms and preventing complications. This may include blood pressure control, magnesium sulfate for seizure prevention, and corticosteroids to improve platelet count and lung maturity in the fetus. Delivery is often the definitive treatment, especially if the pregnancy is near term or if maternal or fetal health is at risk.

Prognosis and Follow-Up

With prompt treatment, most women recover within a few days after delivery. However, complications like liver rupture, stroke, or placental abruption can occur. Follow-up care includes monitoring liver function, blood counts, and blood pressure. Future pregnancies may require closer surveillance due to increased recurrence risk.

Complications

• Liver damage or rupture.
• Stroke or seizures.
• Placental abruption.
• Disseminated intravascular coagulation (DIC).
• Fetal growth restriction or preterm birth.
• Maternal or fetal death (rare but possible).

Lifestyle & Prevention

While HELLP syndrome cannot always be prevented, managing risk factors like chronic conditions (e.g., hypertension) before pregnancy may reduce risk. Regular prenatal care, early symptom reporting, and adherence to provider recommendations are key. Avoiding smoking and maintaining a healthy weight may also support overall pregnancy health.

When to Seek Professional Help

Seek immediate medical attention if experiencing severe abdominal pain, persistent headaches, visual changes, or signs of bleeding (e.g., bruising, nosebleeds). These symptoms may indicate worsening HELLP syndrome or other complications requiring urgent care.

Tips for Medical Coders

Document the trimester (third trimester) and confirm the presence of hemolysis, elevated liver enzymes, and low platelet count to support coding. Include details of associated conditions like pre-eclampsia or hypertension, as these may impact code assignment. Ensure lab results and clinical findings are clearly recorded for accurate coding and billing.