Depression has been implicated as an independent risk factor for the progression of coronary heart disease in patients surviving acute coronary syndromes such as heart attack. One line of such research has studied cardiac patients enrolled in Phase II Cardiac Rehabilitation, in which the Beck Depression Inventory (BDI) is used to quantify depression. While depression clearly has a negative impact on cardiac health in these patients, currently Phase III and Phase IV Cardiac Rehabilitation patients have been largely ignored in psychosocial research. To remedy this gap, the current study sought to examine whether depression was solely a problem in problem in Phase II CR patients, or whether it was also present in Phase III and Phase IV CR patients (N=32). Patients were categorized as Low or High in depression based on BDI scores using a standard cutoff score of 10. Patients in Phase II (n=12) were compared to patients in Phase III/IV (n=20). Comparisons of depression by CR Phase revealed there were no significant differences in the prevalence of depression in Phase II (33%) versus Phase III/IV (25%), (p = .70, Fisher's exact test). CR patients. Results of this study suggest the inclusion of Phase III and Phase IV patients is warranted in future studies of depression in CR samples.