Objective: To develop a new scoring system that more accurately predicts 30-day mortality in patients with alcohol-associated hepatitis (AH). Methods: A cohort of consecutive adults diagnosed with AH at a single academic center from January 1, 1998, to December 31, 2018, was identified for model derivation. Multivariate logistic regression was used to create a new scoring system to predict 30-day mortality. External validation of this score was performed on a multicenter retrospective cohort. Results: In the derivation cohort of 266 patients, the 30-day mortality rate was 19.2%.