Patterns of care for renal surgery: Underutilization of nephron-sparing procedures

Abstract

Nephron-sparing procedures are well-described, provide similar oncologic outcomes to nephrectomy, and potentially decrease morbidity as compared to nephrectomy. We analyzed academic and community health system data from Virginia and Kentucky to evaluate the utilization and cost of nephron-sparing procedures. Primary International Classification of Disease (ICD-9) diagnosis and procedure codes were employed to target subjects of interest. In total, we analyzed 3809 subjects from Virginia and 3163 subjects from Kentucky between 2004 and 2009 who underwent treatment of a malignant renal mass. There has been a 6.1% and 14.8% decrease in nephrectomy utilization in Virginia and Kentucky, respectively, since 2004. In 2009, 71.4% and 68.8% of all procedures for the treatment of renal masses were radical nephrectomies. The proportion of nephron-sparing procedures has increased in academic (20%) and community (15%) health systems since 2004. The difference in cost between nephrectomy, partial nephrectomy and ablative therapy in Virginia and Kentucky hospitals was negligible (p > 0.05). Nephron-sparing procedures have been increasingly employed over the last 6 years, but are still underutilized. There does not appear to be a significant cost difference in the treatment of renal masses with nephrectomy, partial nephrectomy or ablative therapies.