Probably not going to get seen in this morass of comments, but I went back and reviewed the CMS data that the article cites. The article used the Diagnosis Related Group (DRG) 238 - Major Cardiovascular Procedures without Major Complications. This is the best guess at capturing the costs of "Open Heart Surgery". (CMS only releases data for the top 100 DRG codes). "Open Heart Surgery" is a term for a variety of surgic…
The differences in payment between the hospitals is due to the DRG payment adjustments for local cost of living, disproportionate share, etc.