Objective Congestive heart failure (CHF) is a complex chronic disease, and it is associated with a second comorbid condition in more than half of cases. Self-management programs can be specific to CHF or generic for chronic diseases. Several tools have been validated for CHF. Presently there are no established generic instruments validated for measuring self-management in CHF. This study aims to evaluate the internal reliability and construct validity (psychometric properties) of the Partners in Health (PIH) scale in the patients with congestive heart failure, a generic chronic disease self-management tool. Methods: The study included 210 adult CHF patients in Community Cardiology Outpatients in West Melbourne, Australia, treated in community cardiology were included between May 2022 and Jan 2024. The screened patient population were diagnosed with CHF and eligible for SGLT-2 inhibitor. Cohort analysis used the Bayesian confirmatory factor analysis to eval-uate a priori four-factor structure. Omega coefficients and 95% credible intervals (CI) were used to assess internal reliability. Results: In CHF cohorts, Heart Failure with reduced (HFrEF) and preserved ejection fraction (HFpEF), participants mean [standard deviation (SD)] age was 66.8 (13.5) and 71.3 (9.76) years. Description of study sociodemographics highlighted male were 88% and 52%, BMI > 50% in both cohorts, eGFR > 60 ml/min were 59% and 74%, LVEF < 40% and > 50% were 99% and 100% respectively. Model fit for the hypothesised model was adequate (posterior predictive P = 0.073) and all hypothesised factor loadings were substantial ( > 0.6) and significant (P < 0.001). Omega coefficients (95% CI) for the PIH subscales of Knowledge, Partnership, Management and Coping were 0.84 (0.79 – 0.88), 0.79 (0.73 – 0.84), 0.89 (0.85 – 0.91) and 0.84 (0.79 – 0.88) respectively. Conclusion: This study is original in confirming the dimensionality, known-group valid-ity, and reliability of the PIH scale for measuring generic self-management in outpatients with the CHF syndrome.