I have another quick question
Heart assessment 699 and Diabetes Risk Assessment 701 do they have to be billed by themselves or can they be billed plus 23?
Yes, they can.
The rules of unrelated services need to be followed (below).
With 699 one has to be careful not to appear to be an overlapping service. e.g 699 + 23 for blood pressure management. Blood pressure management is overlapping with Heart Health Assessment.