Cases that have been identified because of a patient or family member/representative raising a complaint, have been prioritised in keeping with the NHS Wales complaint procedures.
Mae achosion sydd wedi'u nodi oherwydd bod claf neu aelod o'r teulu/cynrychiolydd wedi gwneud cwyn wedi'u blaenoriaethu yn unol â gweithdrefnau cwyno GIG Cymru.