No more than 20 treatment services (any combination of 82015, 82020, 82025, 82035, 93035, 93036, 93043, 93044) may be claimed in the patient's lifetime; a course of treatment is up to 10 services allocated by the referring doctor; up to four may be given on the same day.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.