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