Try:
Diagnoses: ICD-9 code= add your dx code you use for hypertensive (ex: 401.1) add to search
Notes & Encounters-Encounter date >= (sample: 01/01/2015) & add to search (you may want to vary your date to see results)
By the box at the bottom left that says Hide/show columns MARK show query results (will allow duplicates but you can delete the ones you don't want.
I was able to get a search completed so hope this is on the track you can use.
Flounder
