Dietary hyperoxaluria

This code represents a metabolic disorder characterized by excessively high levels of oxalate in the urine, specifically due to increased dietary intake of oxalate-rich foods. This condition can lead to the formation of calcium oxalate kidney stones and, if severe, can contribute to kidney damage.

Use this code when documentation clearly indicates hyperoxaluria is attributed to dietary factors, such as a diet high in spinach, rhubarb, nuts, or chocolate. This diagnosis is typically supported by urinalysis showing elevated oxalate levels and a patient history detailing dietary habits.

• Differentiate from primary hyperoxaluria (genetic defect) and secondary hyperoxaluria due to enteric malabsorption.
• Ensure documentation specifies "dietary" as the cause of hyperoxaluria to support this specific code.
• Consider co-reporting with codes for kidney stones (e.g., N20.0) if present.