Annual hospital charges and costs for CEA and CAS Annual hospital charges and costs for CEA and CAS. Annual (mean ± SD) unadjusted hospital charges (red circles) and costs (blue circles) are shown for CEA (left) and CAS (right). Annual hospital charges and costs for CEA and CAS. Annual (mean ± SD) unadjusted hospital charges (red circles) and costs (blue circles) are shown for CEA (left) and CAS (right). Sen slope trend-lines are shown for each annual data series (colored lines). 2008 stratified CMS average payments, based upon DRG codes for CEA and CAS, are overlaid in A and B, respectively (Table 2, solid line: no complication or comorbidity; dashed line: minor complication or comorbidity; dotted line: major complication or comorbidity). R.J. McDonald et al. AJNR Am J Neuroradiol 2012;33:420-425 ©2012 by American Society of Neuroradiology