N20.0 Calculus of kidney

Name of the Condition

• Calculus of Kidney
• ICD-10 Code: N20.0

Summary

Calculus of kidney, commonly known as kidney stones, refers to solid mineral deposits that form within the kidney. These stones can vary in size and composition, and they may cause pain or other urinary symptoms as they pass through the urinary tract.

Causes

Kidney stones form when urine becomes concentrated, allowing minerals and salts to crystallize and stick together. Common causes include dehydration, high levels of certain minerals in the diet, and underlying medical conditions that affect urine composition.

Risk Factors

• Dehydration: Inadequate fluid intake increases urine concentration.
• Diet: High sodium, oxalate, or animal protein intake.
• Obesity: Higher body weight is associated with increased risk.
• Family History: Genetic predisposition to stone formation.
• Medical Conditions: Hyperparathyroidism, cystinuria, or urinary tract infections.

Symptoms

• Severe flank pain (pain in the side or back).
• Hematuria (blood in the urine).
• Nausea or vomiting.
• Pain during urination.
• Urgency or frequency of urination.

Diagnosis

Diagnosis typically involves imaging studies such as ultrasound or CT scans to visualize the stones. Urinalysis may detect blood or crystals, and blood tests can assess kidney function and mineral levels.

Treatment Options

Treatment depends on stone size and symptoms. Small stones may pass with hydration and pain management. Larger stones may require medications to facilitate passage or procedures like lithotripsy, ureteroscopy, or surgery.

Prognosis and Follow-Up

Most kidney stones pass without long-term damage, but recurrence is common. Follow-up may include dietary modifications, hydration strategies, and monitoring for underlying conditions to reduce future risk.

Complications

Complications can include urinary tract obstruction, infection, or kidney damage if stones are left untreated. Severe cases may lead to acute kidney injury.

Lifestyle & Prevention

• Stay hydrated to dilute urine.
• Limit sodium, oxalate, and animal protein intake.
• Maintain a healthy weight.
• Follow dietary recommendations based on stone composition.

When to Seek Professional Help

Seek care if experiencing severe pain, persistent nausea, fever, chills, or difficulty urinating, as these may indicate a blockage or infection.

Tips for Medical Coders

Document the presence of kidney stones and any associated symptoms or complications. Ensure specificity in clinical notes to support accurate coding. Include details about stone size, location, or treatment when available.