The insertion of a time delay into the integral feedback circuit of a PI/PID controller yields a transfer function similar to a Smith predictor or an internal-model controller. Although it enables better regulatory performance than a conventional PID control algorithm for lag-dominant processes, a systematic design method for this PID-deadtime controller is still lacking. In this paper, we design a PID-deadtime controller using the coefficient diagram method (CDM), which is a kind of model matching approach. The design procedure is simple since it only involves solving a simple optimization problem to determine the controller parameters. The simulation results show that the designed PID-deadtime control loop exhibits a good balance of stability, response and robustness for deadtime-dominant processes.