IIUC, much of healthcare billing in the US is governed by discrete codes for services performed. I suspect this allows big customers like Federal Gov't & insurers to audit bills easier. In order to either be more specific about the bills or allow less wiggle room, they made these codes remarkably more specific recently (ICD-10 [1]). IMO the descriptions of the items in these codes are humorously specific. Imagine if your auto mechanic got $650/hr for labor, I suppose you would get much more specific invoices for their work too.
