O14.25 HELLP syndrome, complicating the puerperium

Name of the Condition

• HELLP syndrome, complicating the puerperium

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 or postpartum period 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. Blood pressure measurements and urine tests for protein may also be performed to assess for concurrent pre-eclampsia. Imaging or additional tests may be used to rule out other conditions.

Treatment Options

Treatment focuses on managing symptoms and preventing complications. This may include blood pressure control, magnesium sulfate to prevent seizures, and corticosteroids to improve platelet count and liver function. In severe cases, delivery of the baby is often necessary, even if premature. Supportive care, such as blood transfusions or plasma exchange, may be required for severe thrombocytopenia or liver involvement.

Prognosis and Follow-Up

With prompt treatment, most women recover fully, though complications like kidney failure, 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 rupture or hematoma.
• Disseminated intravascular coagulation (DIC).
• Acute kidney injury or failure.
• Pulmonary edema.
• Stroke or seizures.
• Fetal growth restriction or stillbirth.

Lifestyle & Prevention

While HELLP syndrome cannot always be prevented, managing underlying conditions like hypertension or diabetes may reduce risk. Regular prenatal care, early symptom reporting, and adherence to provider recommendations are important. 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., unexplained bruising, nosebleeds). These symptoms may indicate worsening HELLP syndrome or other serious complications requiring urgent care.

Tips for Medical Coders

Document the postpartum onset and any associated conditions (e.g., pre-eclampsia) to support accurate coding. Ensure lab results and clinical findings align with the diagnostic criteria for hemolysis, elevated liver enzymes, and low platelet count. Verify that the code is used only for puerperal (post-delivery) cases, as trimester-specific codes apply to antepartum presentations.