[yummyfajitas]

In the highly unlikely event the doctor's office is prosecuted for failing to charge her for a splint, I'm sure they could plausibly call it a billing error. Note that they didn't charge her less for the splint (which only cost them a few dollars), they simply took it off the bill.

I'd love to see the DA actually try to prosecute the doctor for this. It would make a great reelection platform: "I prosecuted doctors for failing to charge uninsured patients $300 for a $6 splint."