
Keywords: طبقه بندی بین المللی بیماری ها، اصلاح نهم، اصلاح بالینی; CI; Confidence interval; DRG; Diagnostic Related Group; ICD-9-CM; International Classification of Diseases, Ninth Revision, Clinical Modification; ICD-10; International Classification of Diseases, Tenth Revision; HCUP NIS; Healthcare Cost and Utilization