Chapter XX
External causes of morbidity and mortality
(V01-Y98)

Supplementary factors related to causes of morbidity and mortality classified elsewhere
(Y90-Y98)

Note: These categories may be used, if desired, to provide supplementary information concerning causes of morbidity and mortality. They are not to be used for single-condition coding in morbidity or mortality.

Y90 Evidence of alcohol involvement determined by blood alcohol level
Y90.0 Blood alcohol level of less than 20 mg/100 ml
Y90.1 Blood alcohol level of 20-39 mg/100 ml
Y90.2 Blood alcohol level of 40-59 mg/100 ml
Y90.3 Blood alcohol level of 60-79 mg/100 ml
Y90.4 Blood alcohol level of 80-99 mg/100 ml
Y90.5 Blood alcohol level of 100-119 mg/100 ml
Y90.6 Blood alcohol level of 120-199 mg/100 ml
Y90.7 Blood alcohol level of 200-239 mg/100 ml
Y90.8 Blood alcohol level of 240 mg/100 ml or more
Y90.9 Presence of alcohol in blood, level not specified

Y91 Evidence of alcohol involvement determined by level of intoxication
Excludes: evidence of alcohol involvement determined by blood alcohol content ( Y90 )
Y91.0 Mild alcohol intoxication
Smell of alcohol on breath, slight behavioural disturbance in functions and responses, or slight difficulty in coordination.
Y91.1 Moderate alcohol intoxication
Smell of alcohol on breath, moderate behavioural disturbance in functions and responses, or moderate difficulty in coordination.
Y91.2 Severe alcohol intoxication
Severe disturbance in functions and responses, severe difficulty in coordination, or impaired ability to cooperate.
Y91.3 Very severe alcohol intoxication
Very severe disturbance in functions and responses, very severe difficulty in coordination, or loss of ability to cooperate.
Y91.9 Alcohol involvement, not otherwise specified
Suspected alcohol involvement NOS

Y95 Nosocomial condition

Y96 Work-related condition

Y97 Environmental-pollution-related condition

Y98 Lifestyle-related condition