The SIH/SUS, or Hospital Information System of the Unified Health System, is a database that encompasses all hospitals that use the SUS, managed by the Secretariat of Specialized Health Care, of the Ministry of Health. This system collects information about hospital admissions, including data on the patient, diagnosis, procedures performed, and amounts paid. The SIH/SUS is fundamental for monitoring and managing hospital services, as well as being an important tool for producing health statistics and conducting research.