Number of visits to this healthcare entity in the last 12MO:NRat:Pt:^Patient:Qn
Known as: Number of visits to this healthcare entity in the last 12MO, Number of visits to this healthcare entity in the last 12MO:NRat:12Mo:^Patient:Qn, Number of visits to this healthcare entity in the last 12MO:Number = Count/Time:12Mo:^Patient:Quantitative