CNN -- In a move activists say is long overdue, the World Health Organization will no longer classify transgender people as mentally ill.
The UN agency is reclassifying "Gender Incongruence", the term the agency uses for people whose gender identity differs from the gender they were assigned to at birth. The term will be moved from the agency's chapter on Mental Health Disorders and into one called Sexual Health.
The agency and LGBTQ activists say the move will help improve social acceptance for transgender people and reduce stigma.
The organization Transgender Europe says the previous classification contributed to discrimination, harassment, criminalization and abuse based on gender identity.
In a new description of Gender Incongruence, the WHO says gender variant behavior and preferences alone are not a basis for a mental health diagnosis.
The change will be presented at the World Health Assembly in 2019, and will go into effect in 2022.