Store The Selected Cell's Address Into A Variable

I have a table in which I have a "patient" column and a "page" column. The macro searches for a patient's number, then looks if this patient has the page "900.--". A patient may have more than one page, which will result in many rows with the same patient number. So far, my macro uses the search function to find a patient number, then compares the cell next to the active cell to see if it contains the page "900.--". If not, then my macro searches for the next patient and so on until the page is found and noted into another workbook or none is found.

In order to stop the loop, I am trying to store the address of the first cell found into a variable "rFirstCell" so that it can later on be compared to another variable, "rSecondCell", which represent the active cell. When both are the same, it means all the available search results have been tested and the loop should stop.

Sub testing()
Dim rRng As Range, rFirstCell As Range, rSecondCell As Range
Set rRng = Worksheets("Overview").[a1]
Dim sDeath As String
sDeath = "death"
ActiveSheet.AutoFilterMode = False
If LCase(rRng(2, 15).Value) = "x" Then
If LCase(rRng(2, 9).Value) = sDeath Then
Workbooks("DM Endpoint pages_test.xls").Activate
Range("A1").Select...........................