gender-affirming surgery

Gender-affirming surgery (GAS) is a surgical procedure, or a series of procedures, that alters a person's physical appearance and sexual characteristics to resemble those associated with their gender identity. The phrase is most often associated with transgender health care, though many such treatments are also pursued by cisgender individuals. It is also known as sex reassignment surgery (SRS), gender confirmation surgery (GCS), and several other names.

Professional medical organizations have established Standards of Care, which apply before someone can apply for and receive gender-affirming surgeries, including psychological evaluation, and a period of real-life experience living in the desired gender.