In order for Carter to change from his surgical residency to an emergency medicine residency, he agrees to work for free.It is then revealed that he is part of a very affluent, influential, and wealthy family and does not need to work, enabling County General to take him on despite its lack of funding for an additional position.
During Season 9, Carter began sleeping with Abby after they were quarantined in the ER for two weeks because of the outbreak of monkeypox.
It is named after his stillborn son - "The Joshua Makalo Carter Center." Afterwards, he goes to Paris, where Kem is visiting her mother. Carter returns to Chicago and bids adieu to his friends and colleagues.