Conclusion
ICD-10 diagnostic codes that recorded in the HIS can be a reliable factor to evaluate the ADX and DDX discrepancy. The findings of this study may help to understand the cause of the differences in hospital care qualities. Similarity symptoms in CVDs can be the one reason of diagnosis errors that may reduce the quality of patient care. Listing the differential diagnoses, examining their symptoms and using the results of the present study can be helpful in improving diagnosis agreement.17