Information Technology Reference
In-Depth Information
This part of the code filters the data down to just the patients who died so we can see which diagnosis
codes are the most closely affiliated with mortality.
data
nis.code1;
set nis.died;
DX=substr(DX1,
1
,
3
);
data
nis.code2;
set nis.died;
DX=substr(DX2,
1
,
3
);
data
nis.code3;
set nis.died;
DX=substr(DX3,
1
,
3
);
data
nis.code4;
set nis.died;
DX=substr(DX4,
1
,
3
);
Table 17. Diagnosis codes most frequently associated with mortality
ICD9 Code
Code Translation
Frequency with
Mortality
Percentage With Mortality
276
Disorders involving the immune mechanism
142494
6.3828186101
427
Cardiac dysrhythmias
123230
5.5199147847
518
Other diseases of lung
118320
5.2999782303
428
Heart failure
99826
4.4715654735
038
Septicemia
75987
3.4037309482
584
Acute renal failure
64743
2.9000717593
486
Pneumonia, organism unspecified
56844
2.5462471478
401
Essential hypertension
51696
2.3156497177
496
Chronic airway obstruction, not elsewhere classified
44370
1.9874918364
599
Other disorders of urethra and urinary tract
43501
1.9485662018
995
Certain adverse effects not elsewhere classified
42203
1.8904241147
785
Symptoms involving cardiovascular system
40523
1.8151708741
250
Diabetes
39668
1.7768723499
414
Other forms of chronic ischemic heart disease
37612
1.6847767174
410
Acute myocardial infarction
35847
1.6057160211
197
Secondary malignant neoplasm of respiratory and digestive
systems
33655
1.5075284596
780
General symptoms
32084
1.4371577209
507
Pneumonitis due to solids and liquids
29470
1.3200672621
403
Hypertensive kidney disease
28268
1.2662253602
198
Secondary malignant neoplasm of other specified sites
25279
1.1323373029
285
Other and unspecified anemias
25033
1.1213180784
707
Chronic ulcer of skin
24874
1.1141958967
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