The Brazilian health system has not been able to enforce the constitutional Right to Health for the entire population, leaving litigation as the last alternative for the fulfillment of the right. In order to harmonize and underpin the decision making of federal judges, an Academic Detailing (AD) program with concepts of evidence-based medicine and health policies for federal judges will be conducted nationwide in Brazil. AD is a strategy to provide information, combining an interactive outreach approach with the best evidence. This study reports the method used to define key messages to be used during visits.

Government, federal judges and academy representatives were invited to a workshop on health litigation in Brazil. They were divided into six groups to discuss five hypothetical scenarios. In each scenario, groups listed two possible key messages to disseminate during AD, addressing the legal, scientific, economic or ethical dimensions. After the definition, a vote was taken, according to the importance that each participant attributed to them (1 to 10), and then a score was generated.

Of the thirty-one participants, five were from the judiciary, three prosecutors, one health insurance representative, nine managers and thirteen from the academy. From the case study presented, fifty-five key messages were suggested. After removing duplicates, twenty-five were selected to assign importance values by each participant. The key messages were sorted from highest to lowest score, the most important being “Explain what evidence-based medicine means and what scientific evidence means”.

Knowledge of theoretical concepts of evidence-based medicine, health policies and the technology incorporation process seem to be of fundamental importance to federal judges. This information will serve as a basis for decision making regarding litigious proceedings involving the constitutional Right to Health in Brazil. From the selected key messages, bulletins to the academic detailing program to federal judges shall be produced.