Help with SB 1-Returning resident visa application


Registered Users (C)
2 Year RE-Entry permit expired on Oct 28,2020.
Planning to file SB1 visa. Physical green card valid until 2024.

One of the required documents for SB 1 visa application is - “ Proof that your protracted stay outside of the United States was for reasons beyond your control (Examples: medical incapacitation , employment with US company etc ) “
For my parent reason were :
Unable to return to the united states due to COVID related international travel problems in early 2020 and then due Kidney Problems.
We have medical reports and prescriptions for kidney treatment

Is it ok give the above as the reasons ?
Will kidney problem cause any medical exam problems?