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. 2012 Apr 19;2012:726568. doi: 10.1100/2012/726568

Table 1.

Characteristics of top 20 ED users.

Patient no. Total no. of visits No. of EDs Age Homeless? Triage levels* No. of ICD-9 codes Top five diagnoses Primary  insurance
High
(1, 2)
Moderate (3) Low
(4, 5)
1 185 2 55 Yes 29 112 9 341 Lack of housing (59), pain in limb (32), alteration of consciousness (26), abdominal pain (23), nausea/vomiting (14)
45.1% of all codes
Medicaid

2 182 3 49 Yes 25 107 37 97 HIV (18), pruritic disorder (9), cough/chest pain (9), skin rash (6), dizziness (4), dermatitis (4), asymptomatic HIV infection (4)
55.6% of all codes
Medicare

3 168 3 41 Yes 44 101 15 506 Nondependent abuse of drugs (105), alteration of consciousness (98), alcohol withdrawal (92), hypertension (60), and unspecified alcohol dependence (51)
80.2% of all codes
Medicaid

4 148 3 43 Yes 41 73 7 246 Lack of housing (28), back pain (25), HIV infection (21), pain/swelling in limb (21), nondependent abuse of drugs (15)
44.7% of all codes
Medicaid

5 132 3 56 Yes 25 88 13 367 Pain/swelling in limb (33), shortness of breath/cough (31), lack of housing (30), back pain (28), HIV infection (21)
38.9% of all codes
Medicare

6 105 2 62 No 66 30 8 412 Shortness of breath/chest pain (117), diabetes (59), hypertension (49), coronary atherosclerosis (40), alteration of consciousness (33)
72.3% of all codes
Medicare

7 100 2 55 Yes 22 35 24 209 Alteration of consciousness (42), alcohol dependence (39), lack of housing (30), nondependent abuse of drugs (22), noncompliance with medical treatment presenting hazards to health (15)
70.8% of all codes
Uninsured

8 99 2 43 Yes 4 65 11 158 Respiratory symptoms (28), headache (20), abdominal pain (15), nausea/vomiting (12), nondependent abuse of drugs (10)
53.8% of all codes
Uninsured

9 97 3 56 Yes 7 75 7 290 Drug withdrawal (32), HIV infection (30), opioid dependence (23), nausea/vomiting (23), diabetes (22) 44.8% of all codes Medicaid

10 92 3 56 Yes 16 51 20 294 Diabetes (60), respiratory symptoms (33), pain in limb (23), nausea/vomiting (15), asthma (12)
48.6% of all codes
Uninsured

11 87 2 56 Yes 17 45 13 239 Lack of housing (40), myalgia/pain in limb (23), alcohol abuse (16), alcohol dependence (12), joint pain (11)
42.6% of all codes
Uninsured

12 87 3 53 Yes 9 60 11 240 Asthma (33), respiratory abnormalities (21), pain in limb (21), depression (13), disorders of the joint (11) 41.2% of all codes Uninsured

13 82 3 43 Yes 22 41 13 310 Nausea/vomiting (40), abdominal pain (38), HIV (31), alteration of consciousness (23), respiratory symptoms (23)
50% of all codes
Medicaid

14 82 3 42 Yes 8 66 7 263 Hypertension (30), headache (23), respiratory symptoms (22), alterations of consciousness (19), myalgia/pain in limb (19)
42.9% of all codes
Medicaid

15 80 3 36 Yes 5 66 5 259 Nausea/vomiting (41), abdominal pain (41), hypertension (28), bipolar disorder (25), chronic ulcer of skin (20)
59.8% of all codes
Medicaid + Uninsured

16 76 3 30 No 55 15 3 167 Sickle cell disease (115), pain in limb (31), depression (10)
93.4% of all codes
Medicaid

17 70 1 59 Yes 15 48 5 236 Hypertension (42), bronchitis (29), asthma (26), pain in limb (24), shortness of breath (24)
61.4% of all codes
Uninsured

18 70 3 40 Yes 16 26 10 105 Nondependent alcohol abuse (20), depressive disorder (14), schizophrenia (11), other unspecified alcohol dependence (9), unspecified nonpsychotic mental disorder (8), joint pain in lower leg (8)
66.6% of all codes
Medicaid

19 70 3 68 Yes 19 20 30 324 Chest pain (64), diabetes (41), back pain (23), syncope (22), hypertension (16)
51.2% of all codes
Medicare

20 67 2 23 Yes 16 29 14 152 Lack of housing (31), acute upper respiratory infection (19), headache (17), acute nasopharyngitis (common cold) (16), acute pharyngitis (11)
61.8% of all codes
Uninsured

Total 2,079 1 : 1
2 : 6
3 : 13
Ave: 48.3
Mean: 51
18 of 20 461 (24.6%) 1,153 (61.4%) 262
(14%)
5,215 Medicaid: 8.5
Uninsured:: 7.5
Medicare: 4

*Triage totals do not match visit totals because of missing data (9.8% of table sample).

Includes the number of instances this ICD-9 code was cited during the calendar year.