Describes people whose gender identity does not match the sex they were identified as having at birth. Does not require what are often known as sex reassignment or gender confirmation procedures. Identify people as transgender only if pertinent, and use the name by which they live publicly. Generally, avoid references to a transgender person being born a boy or girl, since it’s an unnecessary detail and excludes intersex babies.
The shorthand trans is acceptable on second reference and in headlines.
Use the name by which a transgender person now lives. Refer to a previous name, sometimes called a deadname, only if relevant to the story.
Do not use as a noun, such as referring to someone as a transgender, or use the term transgendered. (Instead, as an adjective: Bernard is a transgender man. Christina is transgender.) Not synonymous with terms like cross-dresser or drag queen, which do not have to do with gender identity. Do not use the outdated term transsexual. Avoid derogatory terms such as tranny.
(Source: AP Stylebook)