Douglas SJ, Remily EA, Sax OC, et al. - Researchers applied a national all-payer database to compare complication rates up to 2 years, 30-day readmission rates, and 90-day costs between conversion total hip arthroplasty (THA) and matched primary THA patients. They conducted a retrospective review of the PearlDiver database between 2010 and the second quarter of 2018 applying Current Procedural Terminology (CPT) codes to compare conversion THA (CPT 27132) to primary THA (CPT 27130). This study’s findings demonstrated elevated complication rates, revisions, readmissions, and costs among conversion THA patients compared to matched primary THA patients. These outcomes suggest the reclassification of conversion into a diagnosis-related group separate from primary THA.