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Table 2 Frequency of patient comorbidities amongst 68 opioid-related overdose cases presenting to the ED

From: Retrospective analysis of patterns of opioid overdose and interventions delivered at a tertiary hospital emergency department: impact of COVID-19

ICD-11-AM Clinical Code

Frequency (%)

06-Mental, behavioural or neurodevelopmental disordersa

42 (61.8)

11-Diseases of the circulatory system

14 (20.6)

12-Diseases of the respiratory system

14 (20.6)

08-Diseases of the nervous system

13 (19.1)

01-Certain infectious or parasitic diseases

12 (17.6)

05-Endocrine, nutritional or metabolic disorders

11 (16.2)

21-Symptoms, signs or clinical findings, not elsewhere classified

10 (14.7)

24-Factors influencing health status or contact with health services

9 (13.2)

13-Diseases of the digestive system

8 (11.8)

15-Diseases of the musculoskeletal system

7 (10.3)

22-Injury, poisoning or certain other consequences of external causes

6 (8.8)

02-Neoplasms

6 (8.8)

16-Diseases of the genitourinary system

6 (8.8)

07-Sleep–wake disorders

5 (7.4)

03-Diseases of the blood or blood forming organs

2 (2.9)

17-Conditions related to sexual health

2 (2.9)

04-Diseases of the immune system

1 (1.5)

09-Diseases of the visual system

1 (1.5)

14-Diseases of the skin

1 (1.5)

  1. ICD International Classification of Diseases, ED emergency department
  2. aExcluding substance use disorders