O14.22 HELLP syndrome (HELLP), second trimester

Name of the Condition

• HELLP syndrome (HELLP), second trimester

Summary

HELLP syndrome is a pregnancy-related complication characterized by hemolysis, elevated liver enzymes, and low platelet count, typically occurring in the second trimester. It is considered a severe form of pre-eclampsia and requires prompt medical evaluation due to risks to both the mother and fetus.

Causes

The exact cause of HELLP syndrome is not fully understood, but it is thought to involve placental dysfunction, leading to widespread endothelial damage and activation of the coagulation system. Genetic, immunological, and vascular factors may also contribute to its development.

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.

Symptoms

• Severe upper abdominal pain or tenderness.
• Nausea, vomiting, or malaise.
• Headaches or visual disturbances.
• Swelling (edema), especially in the hands and face.
• Unexplained fatigue or bruising.

Diagnosis

Diagnosis is based on laboratory tests showing hemolysis (elevated LDH, bilirubin, or schistocytes), elevated liver enzymes (AST/ALT), and low platelet count. Blood pressure measurements and urine tests for protein may also be performed to assess for 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 promote fetal lung maturity. In severe cases, delivery of the baby is often necessary, even if preterm.

Prognosis and Follow-Up

With prompt treatment, most women recover fully, but complications like liver rupture or stroke can occur. Follow-up care includes monitoring blood pressure, liver function, and platelet levels. Future pregnancies may require closer surveillance.

Complications

• Liver rupture or hematoma.
• Disseminated intravascular coagulation (DIC).
• Acute kidney injury or renal failure.
• Pulmonary edema or respiratory distress.
• Placental abruption.

Lifestyle & Prevention

Regular prenatal care is essential for early detection. Managing chronic conditions like hypertension or diabetes before pregnancy may reduce risk. Avoiding smoking and maintaining a healthy weight can also help.

When to Seek Professional Help

Seek immediate medical attention for severe abdominal pain, persistent headaches, visual changes, or signs of bleeding. Prompt evaluation is critical to prevent life-threatening complications.

Tips for Medical Coders

Document the trimester (second trimester) and confirm the presence of hemolysis, elevated liver enzymes, and low platelet count. Ensure the code aligns with clinical findings and avoid using this code for non-pregnancy-related conditions.