Table 2.

ICD-9 Diagnosis, procedure codes and text searches applied in algorithm

A1: 585.xx	Chronic kidney disease
B1: 55.6x	Transplant of kidney (procedure)
B1: V42.0	Organ or tissue replaced by kidney transplant
B2: 250.4x	Diabetes with renal manifestations
B2: 403.xx	Hypertensive chronic kidney disease
B2: 404.xx	Hypertensive heart and chronic kidney disease
B3: V45.1	Renal dialysis status
B3: V56.xx	Encounter for dialysis and dialysis catheter care
B3: 996.73	Complications of renal dialysis
B3: 38.95	Venous catheter for renal dialysis
B5: 584.xx	Acute kidney failure
B9:042.xx-044.xx	Human immunodeficiency virus (HIV) infection
B9: 282.6	Sickle cell disease
B9: 581.xx	Nephrotic syndrome
B9: 582.xx	Chronic glomerulonephritis
B9: 583.xx	Nephritic and nephropathy
B9: 446.xx	Polyarteritis nodosa and allied conditions
B9: 447.6	Vasculitis
B9: 753.xx	Renal agenesis and dysgenesis
Text search terms used in exclusion criteria	HIVAN/HIV associated nephropathy; Congenital [within 2 words of) kidney(s)]; APKD [adult polycystic kidney disease]; Sickle Cell Disease; IgA Nephropathy; Nephrotic Syndrome; Nephritic Syndrome; Glomerulonephritis; Glomerulosclerosis; Lupus Nephritis; Wegener’s granulomatosis; Goodpasture’s syndrome