Comparison of Hospitals Affiliated With PPS-Exempt Cancer Centers, Other Hospitals Affiliated With NCI-Designated Cancer Centers, and Other Hospitals That Provide Cancer Care
Authors: Ryan P. Merkow, Anthony D. Yang, Emily Pavey, Min-Woong Song, Jeanette W. Chung, David J. Bentrem, Karl Y. Bilimoria
Journal: JAMA Internal Medicine (2019)

Congress has exempted 11 specialized cancer centers in the United States from the Prospective Payment System (PPS). These centers are also exempt from reporting many of the process-of-care and outcome measures to the Centers for Medicare & Medicaid Services that are required for hospitals in the PPS. It is not known how hospitals affiliated with PPS-exempt cancer centers differ from other hospitals affiliated with National Cancer Institute cancer centers (NCI-CCs) or other US hospitals that provide cancer care.To examine differences between hospitals affiliated with PPS-exempt cancer centers, other hospitals affiliated with NCI-CCs, and other hospitals that provide cancer care on metrics that could be used in public reporting.This retrospective cohort study compared hospital characteristics and cancer-related services using data from the American Hospital Association Annual Survey and US News Best Hospitals rankings. With a 100% sample of Medicare beneficiaries who underwent 1 of 9 cancer operations (brain tumor resection, colorectal resection, cystectomy, esophagectomy, gastrectomy, liver resection, lung resection, pancreatic resection, prostatectomy) from January 1, 2011, to May 31, 2015, we used hierarchical logistic regression methods to compare differences in 18 postoperative outcomes. Data analysis was conducted from February 2018 to August 2018.This study evaluated hospital characteristics, including cancer-specific services, patient comorbidity burden, and cancer surgery postoperative outcomes, from PPS-exempt cancer centers, NCI-affiliated cancer centers, and other US hospitals that provide cancer care.Hospitals affiliated with PPS-exempt cancer centers (n = 15) and NCI-CCs (n = 54) were similar in hospital characteristics, basic cancer-related services, and patient comorbidity burden. Compared with NCI-CCs, PPS-exempt cancer centers had significantly higher US News reputation scores (mean [SD], 17.5 [24.0] vs 2.6 [4.8]; P < .001) but no differences in oncology patient volume, patient safety ratings, comorbidity burden, nurse staffing, US News total cancer scores, or US News survival scores. Hospitals affiliated with PPS-exempt cancer centers and NCI-CCs had similar adjusted postoperative outcomes for 15 of 18 measures, including mortality, readmission, and surgical site infections. Compared with hospitals affiliated with PPS-exempt cancer centers, patients treated at NCI-CCs were more likely to have postoperative sepsis (3.1% vs 1.7%; P = .002), acute renal failure (6.2% vs 3.9%; P = .01), and urinary tract infection (6.4% vs 4.0%; P = .002). Compared with the other hospitals that provide cancer care (n = 3578), PPS-exempt cancer center status was associated with improved outcomes for 7 of 18 measures, including mortality, sepsis, acute renal failure, pulmonary failure, and failure to rescue.Hospitals affiliated with PPS-exempt cancer centers and NCI-CCs had generally similar hospital characteristics, patient comorbidity burden, and cancer surgery outcomes. These findings raise questions about why some cancer centers are designated as PPS-exempt and why most hospitals are not required to publicly report cancer-specific quality metrics.