Berglund DD, et al. - In this work, the procedure value index (PVI) was introduced and applied to shoulder arthroplasty. Using the value equation in units of minimal clinically important difference (MCID), PVI provides an objective system of quantifying value-driven care. In addition, the PVI for both primary anatomic total shoulder arthroplasty (TSA) and reverse shoulder arthroplasty (RSA) was described to determine the value differences between these patient populations. MCIDs for the Simple Shoulder Test (SST) score, American Shoulder and Elbow Surgeons (ASES) score, visual analog scale (VAS) score for pain, and Single Assessment Numeric Evaluation (SANE) score were 3.61, 29.49, 3.28, and 37.05, respectively in 534 patients. With the exception of the ASES score, units of MCID improved not differently between TSA and RSA. They noted greater PVI for TSA when total hospitalization costs and total charges were considered.