AIMS Our study aimed to a) describe the distribution of hospital discharges with primary and secondary alcohol-specific diagnoses by sex and age group, and b) describe how the number of hospital discharges with primary and secondary alcohol-specific diagnoses have changed across different diagnostic groups (categorized by primary International Classification of Diseases, 10th Revision [ICD-10] diagnosis) over time.

DESIGN Retrospective cross-sectional analysis in German hospital settings between 2012 and 2021.

PARTICIPANTS All persons aged 15-69 admitted to hospitals as registered in a nationwide data set.

MEASUREMENTS We counted a) the number of all hospital discharges and b) the number of hospital discharges with at least one alcohol-specific secondary diagnosis (secondary alcohol-specific diagnosis) by year, sex, age group, and diagnostic group. One diagnostic group included all primary alcohol-specific diagnoses, while 13 additional groups aligned with ICD-10 chapters (e.g., neoplasms). Alcohol-involvement was defined as either a primary or secondary alcohol-specific diagnosis.

FINDINGS Of 95 417 204 recorded hospital discharges between 2012 and 2021, 3 828 917 discharges (4.0%; 2 913 903 men (6.4%); 915 014 women (1.8%)) involved either a primary or at least one secondary diagnosis related to alcohol. Of all alcohol-involved hospital discharges, 56.8% (1 654 736 discharges) had no primary but only a secondary alcohol-specific diagnosis. Secondary alcohol-specific diagnoses were particularly prevalent in hospital discharges due to injuries. With rising age, alcohol-involvement in hospital discharges due to digestive or cardiovascular diseases increased. Between 2012 and 2021, the rate of alcohol-involved hospital discharges has decreased more in younger as compared with older adults (average change between 2012 and 2021: 15-24: -55%; 25-34: -41%; 35-44: -23%; 45-54: -31%; 55-64: -21%; 65-69: -8%).

CONCLUSIONS The number of alcohol-involved hospital discharges in Germany from 2012 to 2021 more than doubles (from 1 654 736 to 3 828 917) when including secondary alcohol-specific diagnoses. More pronounced declines among younger adults may be attributed to unequal changes in alcohol consumption patterns across the population and to the hazardous effects of long-term alcohol use.