My stepdad spent three weeks in a physical-therapy facility for his hip and knee problems. Mom told me that Medicare would pay for 21 days. On Day 21 (which might have been Christmas day), Stepdad fell and broke his shoulder there. As a result, he spent three days in the hospital and then was returned to the same facility.
I told my mom that I remember reading on this forum that there is something significant about staying three nights in a hospital in regard to being discharged--maybe to a rehab facility or nursing home. Maybe that they qualify for Medicare-paid therapy in a facility after three nights in a hospital? So maybe Medicare will pay for another 21 days since he has a new injury for which he was hospitalized? I know this is a vague question, but of what significance are those three nights? Of course, Mom will find out soon regarding payment, I'm just trying to remember what I read.