Frequencies for mdcdesc variable in drg2mdcxw2005 dataset :

        Major Diagnostic Category (MDC) |
                            Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
0: PRINCIPAL DX CAN NOT BE ASSIGNED T.. |         14        2.66        2.66
10: ENDOCRINE, NUTRITIONAL & METABOLI.. |         17        3.23        5.89
11: DISEASES & DISORDERS OF THE KIDNE.. |         32        6.08       11.98
12: DISEASES & DISORDERS OF THE MALE .. |         19        3.61       15.59
13: DISEASES & DISORDERS OF THE FEMAL.. |         17        3.23       18.82
14: PREGNANCY, CHILDBIRTH & THE PUERP.. |         15        2.85       21.67
15: NEWBORNS & OTHER NEONATES WITH CO.. |          7        1.33       23.00
16: DISEASES & DISORDERS OF BLOOD, BL.. |          8        1.52       24.52
17: MYELOPROLIFERATIVE DISEASES & DIS.. |         18        3.42       27.95
18: INFECTIOUS & PARASITIC DISEASES, .. |          9        1.71       29.66
        19: MENTAL DISEASES & DISORDERS |          9        1.71       31.37
1: DISEASES & DISORDERS OF THE NERVOU.. |         43        8.17       39.54
20: ALCOHOL/DRUG USE & ALCOHOL/DRUG I.. |          4        0.76       40.30
21: INJURIES, POISONINGS & TOXIC EFFE.. |         17        3.23       43.54
                              22: BURNS |          8        1.52       45.06
23: FACTORS INFLUENCING HLTH STAT & O.. |          7        1.33       46.39
        24: MULTIPLE SIGNIFICANT TRAUMA |          4        0.76       47.15
25: HUMAN IMMUNODEFICIENCY VIRUS INFE.. |          3        0.57       47.72
     2: DISEASES & DISORDERS OF THE EYE |         13        2.47       50.19
3: DISEASES & DISORDERS OF THE EAR, N.. |         31        5.89       56.08
4: DISEASES & DISORDERS OF THE RESPIR.. |         29        5.51       61.60
5: DISEASES & DISORDERS OF THE CIRCUL.. |         55       10.46       72.05
6: DISEASES & DISORDERS OF THE DIGEST.. |         40        7.60       79.66
7: DISEASES & DISORDERS OF THE HEPATO.. |         20        3.80       83.46
8: DISEASES & DISORDERS OF THE MUSCUL.. |         59       11.22       94.68
9: DISEASES & DISORDERS OF THE SKIN, .. |         28        5.32      100.00
----------------------------------------+-----------------------------------
                                  Total |        526      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016