Comment by rexroad

The cross-subsidy argument is one hospitals use to justify high commercial rates: "Medicare underpays, so we have to make it up on commercial." The HCRIS data lets you test this. If cross-subsidization were the full story, you'd expect cost-to-charge ratios to be tight — hospitals would charge commercial just enough to cover the Medicare shortfall. Instead, the median markup is 2.6x across all hospitals, and 3.96x for nonprofits. That's not cross-subsidy. That's pricing power in a concentrated market.