Table 2: Distribution of primary International Classification of Diseases, 9th Edition (ICD-9) codes by care unit for patients aged 16 years and above.

From: MIMIC-III, a freely accessible critical care database

Table 2: Distribution of primary International Classification of Diseases, 9th Edition (ICD-9) codes by care unit for patients aged 16 years and above.
Critical care unit CCU stays, No. (% by unit) CSRU stays, No. (% by unit) MICU stays, No. (% by unit) SICU stays, No. (% by unit) TSICU stays, No. (% by unit) Total stays, No. (% by unit)
Infectious and parasitic diseases, i.e., septicemia, other infectious and parasitic diseases, etc., (001–139) 305 (4.2%) 72 (0.8%) 3,229 (16.7%) 448 (5.6%) 152 (2.8%) 4,206 (8.6%)
Neoplasms of digestive organs and intrathoracic organs, etc., (140–239) 126 (1.8%) 287 (3.2%) 1,415 (7.3%) 1,225 (15.3%) 466 (8.6%) 3,519 (7.2%)
Endocrine, nutritional, metabolic, and immunity (240–279) 104 (1.4%) 36 (0.4%) 985 (5.1%) 178 (2.2%) 54 (1.0%) 1,357 (2.8%)
Diseases of the circulatory system, i.e., ischemic heart diseases, diseases of pulmonary circulation, dysrhythmias, heart failure, cerebrovascular diseases, etc., (390–459) 5,131 (71.4%) 7,138 (78.6%) 2,638 (13.6%) 2,356 (29.5%) 684 (12.6%) 17,947 (36.6%)
Pulmonary diseases, i.e., pneumonia and influenza, chronic obstructive pulmonary disease, etc., (460–519) 416 (5.8%) 141 (1.6%) 3,393 (17.5%) 390 (4.9%) 225 (4.1%) 4,565 (9.3%)
Diseases of the digestive system (520–579) 264 (3.7%) 157 (1.7%) 3,046 (15.7%) 1,193 (14.9%) 440 (8.1%) 5,100 (10.4%)
Diseases of the genitourinary system, i.e., nephritis, nephrotic syndrome, nephrosis, and other diseases of the genitourinary system (580–629) 130 (1.8%) 14 (0.2%) 738 (3.8%) 101 (1.3%) 31 (0.6%) 1,014 (2.1%)
Trauma (800–959) 97 (1.3%) 494 (5.4%) 480 (2.5%) 836 (10.5%) 2,809 (51.7%) 4,716 (9.6%)
Poisoning by drugs and biological substances (960–979) 50 (0.7%) 2 (0.0%) 584 (3.0%) 58 (0.7%) 11 (0.2%) 705 (1.4%)
Other 565 (7.9%) 739 (8.1%) 2,883 (14.9%) 1,204 (15.1%) 563 (10.4%) 5,954 (12.1%)
Total 7,188 (14.6%) 9,080 (18.5%) 19,391 (39.5%) 7,989 (16.3%) 5,435 (11.1%) 49,083 (100%)
  1. CCU is Coronary Care Unit; CSRU is Cardiac Surgery Recovery Unit; MICU is Medical Intensive Care Unit; SICU is Surgical Intensive Care Unit; TSICU is Trauma Surgical Intensive Care Unit.