ntroduction: It is necessary for every country considers establishing such a system considering to its goals, laws national, interests and standards. The main goal of this research was to compare the national cardiovascular disease DRG system in selected countries. This research is dealing with survey on system of Iran too. 

Methods: This descriptive-comparative study conducted in 2007-2008. The cardiovascular diseases of DRG systems in USA, Australia, England and Canada were reviewed. Data collected through literature review, Internet and e-mail, and presented in comparative tables.

Results: Our findings showed that all of the selected countries have national cardiovascular diseases of the DRG systems. This model employs health care standards, e-learning, annual educational programs, and consultation with experts. Iran lacks such a national classification system for cardiovascular diseases.

Conclusion: Constituents of the model are: using a suitable committee for the cardiovascular DRG system in ministry of health and medical education, development coding standards, relationship between cardiologists and medical coders, presenting educational information about the national cardiovascular of the DRG system, using experiences of the developed countries.