I have a question that perplexes me. I am 100% Permanent and Total for a total of 13 disabilities. I had a total knee replacement after many years of dealing with my arthritic 10% rated knee. i had the TKR in January 2020. I didn't tell regional office anything because I believe in let sleeping dogs lie quietly. However I do know that the VA hospital where I had surgery let the regional office know I had surgery for a service connected knee. I understand that the minimum rating after being reevaluated is 30%. Will they automatically contact me at the 13 month mark for a C&P exam? If so, are they limited to look at the knee only? Will they service connect for the TKR related scar? Just curious! I was already 100% so nothing changed after the surgery although if rated different I could have 100% total temporary perhaps given. I do not want to screw what I already have so any advice what or how this works will help me.