The World Professional Association for Transgender Health Inc. (WPATH) is an international, inter-disciplinary non-profit organization devoted to promoting evidence based care, education, research, advocacy, public policy and respect in transgender health.
Originally named the Harry Benjamin International Gender Dysphoria Association (HBIGDA) -- after Harry S. Benjamin, M.D. (1885-1986) a pioneer researcher of gender dysphoria -- WPATH brings together professionals from a cross-section of fields such as medicine, psychology, social work, anthropology and others to produce a journal on transgender issues, provide web-based resources for understanding and convene conferences and communication boards exploring gender identity.
The WPATH SOC version 7 (published in 2011) documents medically necessary and appropriate care for transgender or transition-related treatment. More specifically, it articulates: