Frequencies for first 10,000 rows of flags variable in icd9toicd10cmgem dataset :

   All five |
      flags |      Freq.     Percent        Cum.
------------+-----------------------------------
      00000 |      2,387       23.87       23.87
      10000 |      7,466       74.66       98.53
      10111 |         71        0.71       99.24
      10112 |         65        0.65       99.89
      11000 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 May 2016