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. 2019 Apr 1;197:262–270. doi: 10.1016/j.drugalcdep.2019.01.019

Table 2.

Underlying (or main) ICD10 chapter for all 1939 non-DRDs; by age-group at death.

ICD10 codes ICD10 chapter, see http://apps.who.int/
classifications/icd10/browse/2010/en
Age-at-death frequency of ICD10 chapter for underlying causes of methadone-prescription-clients’ non-DRDs
Frequency
(%) in 1939
non-DRDs
Frequency
(%) in 261 clients aged
< 35 years
at death
Frequency
(%) in 717 clients aged
35-44 years
at death
Frequency
(%) in 589 clients aged
45-54 years
at death
Frequency
(%) in 372 clients aged
55+ years
at death
A Certain infectious and parasitic diseases 26 (1.3) 5 (1.9) 10 (1.4) 9 (1.5) 2 (0.5)
B 83 (4.3) 1 (0.4) 34 (4.7) 37 (6.3) 11 (3.0)
C Neoplasms 377 (19.4) 14 (5.4) 78 (10.9) 108 (18.3) 177 (47.6)
E Endocrine, nutritional and metabolic diseases 35 (1.8) 8 (3.1) 16 (2.2) 9 (1.5) 2 (0.5)
F Mental and behavioural disorders 120 (6.2) 30 (11.5) 48 (6.7) 34 (5.8) 8 (2.2)
G Diseases of nervous system 26 (1.3) 2 (0.8) 8 (1.1) 12 (2.0) 4 (1.1)
I Diseases of circulatory system 286 (14.8) 20 (7.7) 114 (15.9) 93 (15.8) 59 (15.9)
J Diseases of respiratory system 212 (10.9) 7 (2.7) 63 (8.8) 85 (14.4) 57 (15.3)
K Diseases of the digestive system 303 (15.6) 34 (13.0) 137 (19.1) 104 (17.7) 28 (7.5)
R Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified 37 (1.9) 6 (2.3) 16 (2.2) 12 (2.0) 3 (0.8)
X External causes of morbidity and mortality 279 (14.4) 91 (34.9) 131 (18.3) 47 (8.0) 10 (2.7)
Y 62 (3.2) 20 (7.7) 28 (3.9) 14 (2.4) Nil



Selected sub-codes: respiratory; digestive system; external causes
J09-18 Influenza and pneumonia 53 (2.7) 4 (1.5) 22 (3.1) 19 (3.2) 8 (2.2)
J40-47 Chronic lower respiratory disease 134 (6.9) 3 (1.2) 35 (4.9) 55 (9.3) 41 (11.0)



K70-77 Liver disease 265 (13.7) 29 (11.1) 123 (17.2) 94 (16.0) 19 (5.1)
K70 Alcoholic liver disease 213 (11.0) 25 (9.6) 102 (14.2) 75 (12.7) 11 (3.0)
K74 Fibrosis and cirrhosis 31 (1.6) 3 (1.2) 12 (1.7) 12 (2.0) 4 (1.1)



X65-84
Y15-34
Non-DRD suicide 191 (9.9) 63 (24.1) 95 (13.2) 32 (5.4) 1 (0.3)
X86-Y09 Homicide 56 (2.9) 23 (8.8) 21 (2.9) 8 (1.4) 4 (1.1)

Boldface: for underlying ICD10 chapters which accounted for more than 5% of 1939 non-DRDs; and, for them, to highlight significantly differential frequency by age-group.