This article aims to present a proposal for making the instruments used in the three cycles of the PMAQ-AB compatible and to analyze the information on access, coverage, structure, organization and provision of services in PHC related to care for DM in Brazil, according to regions, from the perspective of family health professionals and users. We performed an analysis of the degree of compatibility of the PMAQ-AB questions (2012, 2014 and 2017). To analyze the temporal evolution of the components, we performed a proportion difference test. We calculated the percentage difference between the perspective of professionals and users, per year analyzed, for Brazil. In general, there was an improvement in the quality of care and examinations, except for the diabetic foot. Worse results were found for the North region in relation to the other regions. Despite the structural improvement and the quality of care reported by professionals, there are significant gaps in the quality of care for patients with DM in the SUS. In the scenario of scarce investment added to the growing prevalence of DM, obstacles become progressively more challenging. Therefore, monitoring and evaluating the quality of services provided are essential tasks of the Brazilian Health System.