Try
yyyymmdd10. --> yymmdd10.
104 data one;
105 input Obs Member_id $ date yymmdd10. dx ;
106 list;
107 cards;
RULE: ----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+
108 1 164-234 2005/01/01 250
109 2 297-123 2005/02/03 4952
110 3 164-234 2005/03/15 78910
111 4 297-123 2005/04/14 250
112 5 297-123 2005/08/19 12345
113 6 164-234 2005/09/13 250
114 7 297-123 2005/11/01 4952
NOTE: The data set WORK.ONE has 7 observations and 4 variables.
NOTE: DATA statement used (Total process time):
real time 0.00 seconds
cpu time 0.00 seconds
115 ;
116
117 run;
118
119 proc print ;run;