1) Zemo asks to speak to Tony and apologizes for hurting him so in his quest to break up the Avengers. Tony Stark was the only Avenger to publicly express remorse over the the damage and lives lost due to the Avengers actions and he provided money and medical help to those affected. So Zemo doesn't hate him anymore and doesn't want any revenge agains Stark.
2) Tony has a heart attack when the Siberia tape is released. (I think it was that tape, not totally sure.) Anyway he ends up in either the hospital or the compound medical ward.
3) Pre Civil War. Steve comes across an injured Spiderman in an alley right after a battle. He has to coax him into letting him take him in for medical treatment (stomach wound?) and promises to keep the mask on him and keep his identity secret.
Thanks to all for your patience. I screwed up on my meds and the pain kinda gets in the way of keeping attention on reading just one story at a time, then things get lost in the shuffle of being in the middle of reading 6 or 7 stories at a time. Happy holidays, whatever they happen to be for you at this time of year.