If it's done in a hospital in an inpatient scenario there's no way. Fake patient would have to be registered to a bed in a unit making that bed unavailable for a real patient. Fake patient would show up on that units census and unit staff would notice if there wasn't an actual patient there. Same thing if it was an ER setting. The "ordering physician" for that patient would see that patient as assigned to them, and seeing no history at all would want to know what the fuck is going on. In both scenarios there are way to many things that are automatically triggered on admission that these supposed nurses couldn't cover up. People are assigned to take vitals and history, and most importantly to the hospital, insurance/billing information is taken by non clinical/nursing staff. And ten different patients, impossible. Even if it was an outpatient setting in a clinic. Test done, sent to lab and results come back as positive. Clinics office staff, not nurses who faked this, of the "ordering physician" would go to contact patient and see no record of an office visit, big red flag that would get looked into. Results on a missed appointment like you suggested would be a bigger red flag. Not to mention the whole billing mess in all scenarios, this would be medicare/insurance fraud, and every nurse would know that's a fast track to losing their license. This could not happen without being caught, not these days. Everything is logged in a computer somewhere and has to get resolved eventually. Maybe one nurse may be stupid enough to try it, but multiple going along with it, no way. Most nurses are women, and the majority would jump at the chance to rat out the one that tried this.