This study aims to determine the implementation of the Accounting Information System in inpatient procedures at RSUD Ngudi Waluyo Wlingi and to analyze the effectiveness of the system in supporting hospital administrative services. The implementation of an accounting information system in inpatient services plays an important role because it includes patient registration, recording of medical treatments, management of treatment costs, and payment processing. The research method used in this study is descriptive research with a qualitative approach. Data collection techniques were conducted through interviews, observations, and documentation. The data sources used consisted of primary data and secondary data. Based on the research findings, it can be concluded that the implementation of the Accounting Information System for inpatient procedures at RSUD Ngudi Waluyo Wlingi has been effective, supporting both service quality and hospital administrative control. Therefore, it is recommended that the hospital continue to upgrade its information technology infrastructure, conduct regular system maintenance, and enhance human resource competencies to further optimize the implementation of the Accounting Information System.
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