... and he didn't even bring them in the hospital either. That said, hospitals are all about pain control and patient comfort so it should be acceptable for him to bring them in even though he didn't. Of course, the hospital can't bill his insurance for pain killers that he provides himself so they're not really about pain control and comfort, they're mostly about profit control.
I'm sure this thing would have happened in the exact same way even if the guy was in his home.