Frequencies for first 10,000 rows of flags variable in icd9toicd10gem dataset :

   All five |
      flags |      Freq.     Percent        Cum.
------------+-----------------------------------
      00000 |        732        7.32        7.32
      10000 |      8,887       88.87       96.19
      10111 |        184        1.84       98.03
      10112 |         88        0.88       98.91
      10113 |          5        0.05       98.96
      10114 |          3        0.03       98.99
      10121 |         54        0.54       99.53
      10122 |         21        0.21       99.74
      10123 |          2        0.02       99.76
      11000 |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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