Medicare surgical global fees: the relationship between included services and payment.

This paper documents how extensively the component services Medicare carriers include in their global fees vary for four common operations. Although payment for each of the operations also varies substantially among Medicare carrier areas, differences in the extent of services included in the surgical global fee do not contribute to explaining the variations in payment. The recently enacted Medicare fee schedule based on resources can rationalize the current pattern of payments, but only if a uniform global service policy is implemented.