Background and Aim: In policy-making and identifying the extent of misuse of health services in hospitalization sectionthe first stepin implementing health control and health monitoring programs is to protect the quality of these services. This study is conducted in Valiasr State Hospital of Meshginshahr City with the aim of assessing the acceptability and unannounced hospitalization of health insurance. Methods: This study is a descriptive and applied study. A total of 660 hospitalized patients were evaluated in internal and surgical departments of the hospital. To determine the admissions and inappropriate hospitalization days the Appropriateness Evaluation Protocol (AEP: Appropriateness) have been applied.