SQL If NUll on Unpivot

So wondering if this sql code can have a statemet put in it that will do the following.

It runs the query as printed below but it checks to see if a specific feild is null.

So for instance this query currently does not have the field [appraisefinal]. I want it to while running this query do some if statements and say if appraisefinal is null then insert [appraisal ordered] into the item of outlookreport.dbo.calendar.

;WITH MyCTE AS
(
    SELECT    * 
    FROM      (
                  SELECT   *
                  FROM      emdb.dbo.calendarview 
              )p
    UNPIVOT 
    ( 
        EventDate FOR DateDescription in ([Appraisal Ordered],[Closing Date],[Application Signed],[Appraisal Recieved] ,[Approval To Close],[Insurance Ordered],[Title Ordered])
    ) as unpvt
)
insert into outlookreport.dbo.calendar (eventdate,item,xrefid)
SELECT    
          M.EventDate,
          M.DateDescription,
          T.xrefid
FROM      emdb.dbo.calendarview T 
          JOIN MyCTE M
              ON T.xrefid = M.xrefid
WHERE NOT EXISTS(SELECT 1 FROM outlookreport.dbo.calendar WHERE eventdate = M.EventDate AND xrefid = T.xrefid);

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