D73.5 Infarction of spleen

Name of the Condition

• Infarction of spleen

Summary

Infarction of the spleen refers to the death of splenic tissue due to a lack of blood supply, typically caused by a blockage in the splenic artery or vein. The spleen, an organ involved in filtering blood and supporting immune function, may be affected by this ischemic event, which can disrupt its normal activity. The condition may present with acute or subacute symptoms depending on the extent of tissue damage.

Causes

Infarction of the spleen is most commonly caused by a thrombus (blood clot) or embolus obstructing the splenic artery or vein. Other causes include trauma, vasculitis (inflammation of blood vessels), or conditions that reduce blood flow, such as hypotension or shock. Underlying disorders like atrial fibrillation or endocarditis may increase the risk of embolic events leading to splenic infarction.

Risk Factors

• Atrial fibrillation or other cardiac conditions predisposing to emboli
• Recent surgery or trauma to the abdomen
• Vasculitis or connective tissue disorders
• Hypercoagulable states (e.g., clotting disorders)
• Splenomegaly (enlarged spleen) increasing susceptibility to infarction
• Infections or inflammatory conditions affecting blood vessels

Symptoms

• Sudden or gradual left upper quadrant abdominal pain
• Pain radiating to the left shoulder (Kehr's sign)
• Fever or chills
• Nausea or vomiting
• Abdominal tenderness or distension
• Fatigue or malaise

Diagnosis

Diagnosis is based on clinical presentation, imaging studies (e.g., CT or MRI of the abdomen), and laboratory tests. Imaging may reveal characteristic findings of splenic infarction, such as wedge-shaped areas of low attenuation. Blood tests may show elevated inflammatory markers or signs of anemia. Clinical correlation is essential to rule out other causes of abdominal pain.

Treatment Options

Treatment focuses on managing the underlying cause and relieving symptoms. Anticoagulants may be used if a clot is present, while analgesics address pain. In severe cases, splenectomy (surgical removal of the spleen) may be necessary. Supportive care, including hydration and monitoring for complications, is often required.

Prognosis and Follow-Up

Prognosis depends on the extent of tissue damage and the underlying cause. Most patients recover with appropriate treatment, but complications like abscess formation or rupture can occur. Follow-up imaging and clinical evaluation may be needed to assess healing and monitor for recurrence.

Complications

• Splenic abscess or infection
• Rupture of the spleen (rare but life-threatening)
• Chronic pain or residual splenic dysfunction
• Increased risk of infection if splenectomy is performed

Lifestyle & Prevention

• Manage underlying conditions (e.g., atrial fibrillation, hypercoagulability) to reduce embolic risk
• Avoid trauma to the abdomen
• Seek prompt medical care for abdominal pain or unexplained fever
• Follow post-splenectomy guidelines (e.g., vaccinations) if surgery is required

When to Seek Professional Help

Seek immediate medical attention for severe abdominal pain, fever, or signs of shock (e.g., dizziness, rapid heart rate). Persistent symptoms or worsening pain after initial treatment also warrant evaluation.

Tips for Medical Coders

Code D73.5 is used for infarction of the spleen. Documentation should specify the cause (e.g., embolic, thrombotic) and any associated complications. Ensure the diagnosis is clearly supported by clinical findings or imaging. Avoid using this code for non-ischemic splenic conditions.