Some patients cannot come to the practice. The practice has a policy on visits to homes, residential aged care facilities, hospitals and other locations within its practice area, setting out when a visit is appropriate, how patients request one, how the clinician's safety is assessed and managed, and what alternative is arranged, such as a deputising service or another practice, when the practice itself cannot visit. The policy is explained to patients who ask.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.