Enteric hyperoxaluria

Enteric hyperoxaluria is a metabolic disorder characterized by excessive absorption of oxalate from the gastrointestinal tract, leading to elevated oxalate levels in the urine. This condition often results from malabsorption syndromes or inflammatory bowel diseases that disrupt normal fat absorption, increasing colonic oxalate availability for absorption.

This code is appropriate for documenting patients diagnosed with hyperoxaluria specifically attributed to an underlying enteric cause. Documentation should clearly indicate a link between a gastrointestinal condition (e.g., Crohn's disease, bariatric surgery, pancreatic insufficiency) and the elevated urinary oxalate excretion.

• Ensure documentation explicitly states "enteric" or "secondary to GI disorder" to differentiate from primary hyperoxaluria.
• Code the underlying gastrointestinal condition first, followed by this code, to fully explain the patient's diagnosis.
• Do not confuse with primary hyperoxaluria (E72.53), which is a genetic disorder of oxalate metabolism.