Your example data is a pet peeve of mine. Apparently your data is actually only a date but is stored as datetime, which caused you some confusion. If ALL of the "time" values of a "datetime" variable you might consider ignoring the time component.
data SAMPLESAS;
infile datalines dsd truncover ;
informat dcdeathdate DATE7. nationalid $24. HCVScreening $9. HCVresult $27.;
input dcdeathdate nationalid HCVScreening HCVresult;
format dcdeathdate date9.;
datalines4;
02JAN17:00:00:00,61009030817,Yes,Negative
03JAN17:00:00:00,40001035344,Yes,Negative
03JAN17:00:00:00,12301107155,Yes,Negative
03JAN17:00:00:00,61006025798,Yes,Negative
03JAN17:00:00:00,33001047104,Yes,Negative
03JAN17:00:00:00,61007000494,Yes,Negative
03JAN17:00:00:00,61001066538,Yes,Negative
04JAN17:00:00:00,61004056218,Yes,Negative
05JAN17:00:00:00,61005011122,Yes,Negative
;;;;
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