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Table 2 The 20 most common emergency department diagnoses for critical care and hospitalization outcome

From: Emergency department triage prediction of clinical outcomes using machine learning models

Critical care outcome Hospitalization outcome
CCS* Diagnostic category n CCS* Diagnostic category n
122 Pneumonia 161 102 Nonspecific chest pain 1836
102 Nonspecific chest pain 161 251 Abdominal pain 900
109 Acute cerebrovascular disease 138 122 Pneumonia 892
108 Congestive heart failure (non-hypertensive) 133 133 Other lower respiratory diseases 732
133 Other lower respiratory diseases 125 108 Congestive heart failure (non-hypertensive) 626
153 Gastrointestinal hemorrhage 101 127 Chronic obstructive pulmonary disease and bronchiectasis 570
106 Cardiac dysrhythmias 95 245 Syncope 556
131 Respiratory failure, insufficiency, and arrest 90 259 Residual codes (unclassified) 554
2 Septicemia 90 657 Mood disorders 535
259 Residual codes (unclassified) 86 197 Skin and subcutaneous tissue infections 531
55 Fluid and electrolyte disorders 82 106 Cardiac dysrhythmias 530
127 Chronic obstructive pulmonary disease and bronchiectasis 70 109 Acute cerebrovascular disease 483
100 Acute myocardial infarction 64 153 Gastrointestinal hemorrhage 466
101 Coronary atherosclerosis and other heart disease 62 159 Urinary tract infections 463
50 Diabetes mellitus with complications 57 55 Fluid and electrolyte disorders 459
233 Intracranial injury 53 659 Schizophrenia and other psychotic disorders 391
242 Poisoning by other medications and drugs 45 101 Coronary atherosclerosis and other heart disease 319
251 Abdominal pain 43 660 Alcohol-related disorders 285
245 Syncope 40 252 Malaise and fatigue 270
159 Urinary tract infections 40 246 Fever of unknown origin 258
  1. Abbreviation: CCS Clinical Classification Software
  2. *The principal diagnoses (> 14,000 ICD-9-CM diagnosis codes) were consolidated into 285 mutually exclusive diagnostic categories using the Agency for Healthcare Research and Quality Clinical Classifications Software (CCS) [50], as done previously [51]