Renal stone (disease) Urinary calculi ICD‐9‐CM Codes 592 Calculus of kidney and ureter [excludes nephrocalcinosis (275.4)] 592.0 Nephrolithiasis NOS 592.1 Calculus of ureter 592.9 Urinary calculus, unspecified Epidemiology & Demographics • The incidence is 1 in 1000 to 1 in 7600 pediatric hosp...