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6.4 Frequency of all ICD-9 codes for adult ICU-related hospital admissions

Table 6.1 lists the most frequent ICD-9 codes (including the primary ICD-9 codes) for the same population for the thirty-two major ICD-9 categories. Note that there is one extra category in the non-primary code categories (see table 6.1) ``Supplementary classification of external causes of injury and poisoning'' (code range E800 to E999). These ICD-9 codes are not used for primary classification.

Distribution of major categories of ICD-9 codes for adult ICU-related hospital admissions (n = 211,416)
Category Code Range Number of %
Metabolic disorder 240-279 23927 11.32%
Pulmonary disease 460-519 18694 8.84%
Other forms of heart disease 420-429 13203 6.25%
Digestive disease 520-579 13181 6.23%
Supplementary classification of factors influencing health status and contact with health services V01-V86 12801 6.05%
Ischemic heart disease 410 - 414 12794 6.05%
Renal insufficiency 580-629 11262 5.33%
Hypertensive disease 401-405 10970 5.19%
Symptoms, signs, and ill-defined conditions 780-799 8777 4.15%
Diseases of the blood and blood-forming organs 280-289 8744 4.14%
Trauma 800-959 7975 3.77%
Heart failure 428 7470 3.53%
Infectious diseases 001-139 7388 3.49%
Mental disorders 290-319 7337 3.47%
Supplementary classification of external causes of injury and poisoning E800-E999 6632 3.14%
Arteries and veins 440-459 5828 2.76%
Neoplasms 140-239 5403 2.56%
Neurologic disease 320-389 5140 2.43%
Diseases of the musculoskeletal system & connective tissue 710-739 3632 1.72%
Other complications of procedures, NEC 998 2936 1.39%
Cerebrovascular disease 430-438 2849 1.35%
Diseases of the skin and subcutaneous tissue 680-709 2799 1.32%
Complications affecting specified body systems, not elsewhere classified 997 2551 1.21%
Complications peculiar to certain specified procedures 996 2403 1.14%
Other and unspecified effects of external causes 990-995 1941 0.92%
Chronic rheumatic heart disease 393-398 1438 0.68%
Diseases of pulmonary circulation 415-417 1233 0.58%
Congenital anomalies 740-759 673 0.32%
Complications of pregnancy, childbirth, and the puerperium 630-677 627 0.30%
Poisoning 960-989 590 0.28%
Complications of medical care, not elsewhere classified 999 213 0.10%
Acute Rheumatic fever 390-392 5 0.00%
Total   211416 100.00%
       


next up previous contents
Next: Bibliography Up: 6. Appendix Previous: 6.3 Commonly used parameters   Contents
2012-02-24