CMS must establish adequate quality assurance measures to ensure that ACOs do not withhold cost-effective care, like TKAs,14,15 from their patients. Hopefully, for both professional and ethical reasons, providers will be active partners in this process. Groups like the International Consortium for Health Outcome Measurement, which has convened international expert panels to agree on comprehensive outcome sets for total joint arthroplasty and the management of low back pain, among other non-orthopedic conditions, may be useful examples in this process.16-18
At the provider level, surgeons will be more likely to be salaried employees, contracting directly with the ACO rather than primarily working to earn physician fees from insurance providers. Surgeons will likely be judged (and rewarded financially) on their ability to direct nonoperative care, to find non-surgical solutions to problems that may currently be treated operatively, and to reduce costs for patients that require surgery. Additionally, with an increased focus on quality assurance, there will likely be more pressure from ACOs and CMS to demonstrate results of both operative and nonoperative care, likely in the forms of patient-reported metrics and objective measures of physical function. Surgeons will have a strong incentive to be leaders in the process of collecting such data.
It is also worth considering the position of orthopedic practices that are not part of an ACO. Some ACOs will not have the capacity to provide all (or possibly any) of the orthopedic care their patients require. When necessary, they will contract with outside orthopedic practices. Compared with CMS, ACOs are much smaller purchasers and can be expected to be more sensitive to price, likely negotiating intensely between local orthopedic providers. As a result, even orthopedists outside of ACOs may feel the cost pressure created by this new reimbursement model and may be driven to implement cost-reduction measures such as standardized implant choices and discharge pathways.
ACOs are in an active growth phase,19,20 and recent updates to ACO policies make it clear that CMS intends for this trend to continue.8 Since ACOs are still a nascent reimbursement model, orthopedists will still do better financially, in almost all markets, by continuing to expend their energy and resources pursuing revenue, rather than cutting costs or demonstrating outcomes. However, as ACOs and population health gain traction, those orthopedists who recognize this shift and plan accordingly will have a definite strategic advantage, whether their practice is within an ACO, interacting with external ACOs, or both.