Skip to main content

Table 2 Eligible study records and random sample: medical record review of intentional self-harm treated in EDs

From: Multi-site medical record review for validation of intentional self-harm coding in emergency departments

Characteristics

Maryland

Colorado

Massachusetts

% (N = 234)

% in frame (N = 8551)

% in sample (n = 252)

% in frame (N = 6651)

% in sample (n = 396)

Intentional self-harm ICD-10-CM codes

 Only specific codes

84.6

91.0

85.3

90.0

90.2

 Only nonspecific suicide attempt (T14.91 code)

7.7

2.9

2.8

2.3

2.8

 Both specific codes and nonspecific suicide attempt

7.7

6.1

11.9

7.7

7.1

2 or more specific intentional self-harm codes

53.0

19.7

36.9

17.6

16.7

Suicidal ideation (R45.851 code)

35.9

25.0

23.0

22.1

21.0

Mechanisma

 Poisoning—Drug

39.5

48.1

54.7

39.9

40.2

 Poisoning—Non-drugb

8.8

2.2

2.4

4.0

5.1

 Cut/pierce

31.6

28.7

22.6

38.6

36.4

 Suffocationc

8.3

1.7

2.0

1.1

1.0

 Otherd

12.3

16.4

15.5

17.6

18.7

 No mechanisme

5.7

2.9

2.8

2.3

2.8

Age 18 years and oldera

69.7

68.8

72.2

75.2

76.0

Female sex

49.6

61.0

56.7

60.9

61.4

Discharged to

 Home

81.2

44.3

38.5

52.2

48.0

 Psychiatric unit

18.4

38.9

44.4

N/A

N/A

 Other

0.4

16.8

17.1

47.8

52.0

  1. aMaryland: N = 228 for mechanism, N = 231 for age
  2. bToxic effects of non-medicinal substances
  3. cAsphyxiation, suffocation, hanging
  4. dIncludes firearm, fire or flame, hot object or substance, fall, transportation, struck by or against, drowning or submersion, natural or environmental, each of which total less than 1%. Also includes X83.8 for “Intentional self-harm by other specified means”
  5. eColorado: Only nonspecific suicide attempt (T14.91 code)
  6. Colorado: The Colorado Hospital Association selected the sample, of which eight records did not link back to the limited version of the ED billing data set that the health department has access to. These eight records were included in the medical record review
  7. Massachusetts: Massachusetts inadvertently included four deaths in the original 400 sampled records and did not review their medical records, since deaths were an exclusion criterion for all sites