Evaluation of the Prevalence of Chronic Kidney Disease and Rates of Oral Antidiabetic Prescribing in Accordance with Guidelines and Manufacturer Recommendations in Type 2 Diabetic Patients within a Long-Term Care Setting

Table 1

Stages of CKD.

ICD-9-CM diagnosis code	CKD disease stage	Corresponding GFR (mL/min/1.73 m^2)	Description
585.1	1	≥90 with kidney damage	Normal kidney function, but urine findings, structural abnormalities, or genetic trait points to kidney disease
585.2	2	60–89 with kidney damage	Mildly reduced kidney function, and other findings (as for stage 1) point to kidney disease
585.3	3	30–59	Moderately reduced kidney function
585.4	4	15–29	Severely reduced kidney function
585.5, 585.6	5	<15 (or dialysis)	Very severe, or end-stage kidney failure (sometimes called established renal failure)

CKD: chronic kidney disease; GFR: glomerular filtration rate; ICD-9-CM: The International Classification of Diseases, Ninth Revision, Clinical Modification.