Change
For Each CellaCerc In Sheets("Key Criteria").Range("A2", "A23")
If (((My_Range.Offset(0, 9) + DayCount - 1) >= CellaCerc.Offset(0, 1)) And ((My_Range.Offset(0, 9) + DayCount - 1) <= CellaCerc.Offset(0, 2))) Then
Ceiling_Range.Offset(0, 1) = CellaCerc
Exit For
End If
Next
to
For Each CellaCerc In Sheets("Key Criteria").Range("A2", "A23")
If My_Range.Offset(0, 9).Value = "expired" Then
'do nothing
ElseIf (My_Range.Offset(0, 9).Value + DayCount - 1) >= CellaCerc.Offset(0, 1) And _
(My_Range.Offset(0, 9).Value + DayCount - 1) <= CellaCerc.Offset(0, 2) Then
Ceiling_Range.Offset(0, 1) = CellaCerc
Exit For
End If
Next