Additional file 9: of An underlying diagnosis of osteonecrosis of bone is associated with worse outcomes than osteoarthritis after total hip arthroplasty

Top 15 International Classification of Diseases, Ninth Revision (ICD-9) codes and descriptions of unplanned readmissions within 90 days of Total Hip Arthroplasty Surgery by primary diagnosis (osteoarthritis vs. osteonecrosis). This file shows the top 15 reasons for unplanned readmissions within 90 days of Total Hip Arthroplasty Surgery by primary diagnosis, osteoarthritis vs. osteonecrosis. (DOCX 17 kb)