Frequencies for first 10,000 rows of opicd4x variable in h126f dataset : 3-DIGIT | ICD-9-CM | CONDITION | CODE | Freq. Percent Cum. ------------+----------------------------------- -1 | 9,805 98.05 98.05 042 | 4 0.04 98.09 070 | 6 0.06 98.15 079 | 1 0.01 98.16 185 | 1 0.01 98.17 195 | 1 0.01 98.18 246 | 2 0.02 98.20 250 | 11 0.11 98.31 268 | 9 0.09 98.40 269 | 7 0.07 98.47 272 | 11 0.11 98.58 276 | 1 0.01 98.59 311 | 15 0.15 98.74 346 | 18 0.18 98.92 348 | 1 0.01 98.93 354 | 1 0.01 98.94 366 | 1 0.01 98.95 401 | 1 0.01 98.96 433 | 1 0.01 98.97 436 | 1 0.01 98.98 444 | 4 0.04 99.02 459 | 4 0.04 99.06 473 | 1 0.01 99.07 486 | 7 0.07 99.14 491 | 1 0.01 99.15 492 | 1 0.01 99.16 493 | 2 0.02 99.18 535 | 1 0.01 99.19 574 | 2 0.02 99.21 586 | 1 0.01 99.22 593 | 1 0.01 99.23 710 | 2 0.02 99.25 715 | 2 0.02 99.27 716 | 9 0.09 99.36 719 | 1 0.01 99.37 723 | 1 0.01 99.38 726 | 24 0.24 99.62 733 | 2 0.02 99.64 737 | 1 0.01 99.65 747 | 4 0.04 99.69 759 | 1 0.01 99.70 782 | 3 0.03 99.73 789 | 1 0.01 99.74 795 | 1 0.01 99.75 797 | 1 0.01 99.76 850 | 12 0.12 99.88 873 | 1 0.01 99.89 V70 | 1 0.01 99.90 V72 | 9 0.09 99.99 V77 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 27 Feb 2018