Is a myth. The concept of ‘same day’ or routine work is a false distinction based on supply side factors i.e. availability of appointments. In reality, actual clinically urgent demand is only a small proportion of daily activity and everything else is just work that needs to be dealt with. The choice practices have is in who does the work, where and how it is done.
One of the areas where it is useful to make a distinction between types of work is between reactive activity (i.e. most GP activity) and planned activity (e.g. antenatal, minor surgery, long-term conditions), as these systems behave differently and are driven by different needs.