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. 2016 Nov 3;16:136. doi: 10.1186/s12890-016-0297-y

Table 2.

Number and distribution of the most common discharge diagnoses, by type of admission

Type of admission
Emergency
(N = 421)
Elective
(N = 299)
Day hospital
(N = 165)
Overall
(N=885)
Discharge diagnosis (ICD-9-CM codes) Primary codea Any codeb Primary codea Any codeb Primary codea Any codeb Primary codea Any codeb
N (%) N % N % N % N % N % N % N %
ALS (335.20) 112 (26.6) 335 (79.6) 154 (51.5) 233 (77.9) 122 (73.9) 132 (80.0) 388 (43.8) 700 (79.1)
Respiratory failure (518.81-.84) 117 (27.8) 192 (45.6) 49 (16.4) 79 (26.4) 6 (3.6) 9 (5.4) 172 (19.4) 280 (31.6)
Acute (518.81) 93 (22.1) 138 (32.8) 44 (14.7) 59 (19.7) - 2 (1.2) 137 (15.5) 199 (22.5)
Chronic (518.83) 3 (0.7) 9 (2.1) 2 (0.7) 15 (5.0) 6 (3.6) 6 (3.6) 11 (1.2) 30 (3.4)
Acute on chronic (518.84) 12 (2.8) 25 (5.9) 1 (0.3) 2 (0.7) - - 13 (1.5) 27 (3.0)
Unidentified (518.82) 9 (2.1) 21 (5.0) 2 (0.7) 3 (1.0) - 1 (0.6) 11 (1.2) 25 (2.8)
Diseases of the respiratory system (460-519) 71 (16.9) 156 (37.0) 7 (2.3) 30 (10.0) - 5 (3.0) 78 (8.8) 191 (21.6)
Pneumonia and influenza (480-487) 44 (10.4) 105 (24.9) 5 (1.7) 19 (6.3) - 2 (1.2) 49 (5.5) 126 (14.2)
Aspiration pneumonia (507.0) 10 (2.4) 18 (4.3) - 1 (0.3) - - 10 (1.1) 19 (2.1)

aNumber and percentage (%) of hospitalizations with the corresponding discharge diagnosis as primary code

bNumber and percentage (%) of hospitalizations with the corresponding discharge diagnosis as primary or any secondary code