The (SUA) is the only health accreditation system that performs accreditation in health care institutions through a voluntary process, which is to measure the quality of their services, adjusting to existing standards and guaranteeing a quality assurance program. The institutions that provide health services have the responsibility of providing the patient, and the community, health services that are of quality and as safe as possible, for this it is necessary to have a professional and committed human resource.This means that the conditions Those that must be counted on are simultaneously to provide timely services with quality standards and with the community in mind. The care processes must be coordinated and permanently self-evaluated by the team of professionals in the institutions that provide health services and by the surveillance and control entities within the framework of compliance with the Quality Assurance System of Health Services. 4 This systematic review aims to validate the parameters of the (SUA), in health institutions, for this, a review and analysis of 23 scientific articles was carried out, in Spanish, searching electronic databases such as: medline, sciencedirect, proquest, scopus, pubmed, scielo and academic Google for four months, the connectors used and, or, about. The review showed the importance of regulations and the functioning of health systems, in addition to the quality model proposed, highlighting the particularity of each country without ignoring the similarity in terms of the provision of health systems.