Betsi Cadwaladr and Hywel Dda have seen increases in diagnostics from 2017, but Cwm Taf Morgannwg reached the highest level by March 2023, at over 25,000 pathways waiting.
Mae Betsi Cadwaladr a Hywel Dda wedi gweld cynnydd mewn diagnosteg o 2017 ymlaen, ond fe gyrhaeddodd Cwm Taf Morgannwg y lefel uchaf erbyn Mawrth 2023, gyda dros 25,000 o lwybrau yn aros.