This observational cohort study evaluates the prognostic impact of diabetes, comorbidity burden, and short-term weight variability among adults with chronic heart failure enrolled in a nationwide remote patient monitoring program in France. Patients were enrolled between September 3 2018 and April 3 2024 as part of routine heart failure care. Baseline demographic, clinical, and treatment data, along with weight measurements collected through telemonitoring, were analyzed. The study aims to assess associations between diabetes status, multimorbidity, and weight variability with survival outcomes using retrospective data from the program database. No study-mandated interventions were performed.