Hypocitraturia

This code represents a metabolic disorder characterized by abnormally low levels of citrate in the urine. Hypocitraturia is a significant risk factor for calcium kidney stone formation, as citrate normally inhibits crystal aggregation and growth. It often indicates an underlying metabolic imbalance affecting renal tubular function.

Use this code when documentation explicitly states a diagnosis of hypocitraturia, typically confirmed by a 24-hour urine collection showing citrate excretion below established reference ranges. This diagnosis is frequently made in patients presenting with recurrent calcium oxalate or calcium phosphate nephrolithiasis.

• Ensure the documentation clearly specifies "hypocitraturia" and not just a general kidney stone diagnosis.
• This code is often a secondary diagnosis, accompanying codes for nephrolithiasis (e.g., N20.0).
• Do not confuse with hypercalciuria or other urinary abnormalities; this code is specific to low citrate levels.