You can add historical diagnostic studies to the history of present illness in Reason for Visit of the Diagnostic History Entry template.
 
  - Open NextGen® Enterprise EHR.
 
  - On the Diagnostic History Entry template, select a diagnostic study that is entered in the current encounter with a documented Result or Interpretation.
   
    The 
Add to HPI Grid button is turned on. 
    
     Note: The Add to HPI Grid button is turned on if the selected study is created in the current encounter and has a documented Result or Interpretation.
     
 
     
    
  - Select Add to HPI Grid.
   
    The diagnostic study is added in the 
Reason for Visit section as 
Studies Reviewed.