In 2015 the Human Rights Commission of Sri Lanka (HRCSL) recommended to the Ministry of Health to issue a circular to enable transgender persons to change their sex in their personal documentation, such as the National Identity Card (NIC).
Since then the HRCSL had continuous discussions with the Ministry of Health, the Department of Registrar General and civil society regarding the gender certificate which was formulated by the HRCSL to enable change of sex in personal documentation. Following that, the Ministry of Health issued circular No. 01-34/2016 dated 16.06.2016 under the hand of the Director General of Health Services. The Registrar-General issued circular No 06/2016 dated 28.07.2016 instructing all registrars in the country to change the sex and name in the birth certificate based on the gender recognition certificate.
Source: http://hrcsl.lk/english/wp-content/uploads/2016/08/GRC-E.pdf