The increasing pressures on integrated healthcare delivery systems (IDSs) to provide coordinated and cost-effective care focuses attention on the question of how to best integrate across multiple sites of care. One increasingly common approach to this issue is the development of clinical service lines that integrate specific bundles of services across the operating units of a system. This article presents a conceptual model of service lines and reports results from a descriptive investigation of service line development among members of the Industry Advisory Board--a research consortium comprising IDSs. The experiences of these IDSs (1) provide valuable insights into the range of organizational arrangements and implementation issues that are associated with service line management in healthcare systems and (2) suggest aspects of service line management worthy of further inquiry.
