Cafodd y gwasanaeth, sy’n wahanol i fodeli eraill yn y DU oherwydd bod ganddo gyfran uwch o staff yn perthyn iddo, ei lansio fel peilot ym Mwrdd Iechyd Prifysgol  Abertawe Bro Morgannwg ym mis Hydref 2016, a’i ymestyn i Sir Gaerfyrddin ym mis Mai 2017.
The service, which differs from other UK models by having a greater proportion of clinical staff within it, was launched as a pilot in Abertawe Bro Morgannwg University Health Board (ABM), in October 2016, and extended to Carmarthenshire in May 2017.