For decades, Connecticut and other states have used a fee-for-service model to pay for health care: the provider bills for each service, every consult, every procedure, every test, every pill. State Comptroller Kevin Lembo and many others have come to view that system as seriously flawed. It not only contributes to skyrocketing medical costs but also fails to deliver optimum care, Lembo said. “The incentives in that model are problematic,” Assistant Comptroller Josh Wojcik said. “It incentivizes volume.