Management information suggests that in December, when there were just under 800,400 open patient pathways, there were about 616,500 individual patients on treatment waiting lists in Wales.
Mae gwybodaeth reoli yn awgrymu bod tua 616,500 o gleifion unigol ar restrau aros am driniaethau yng Nghymru ym mis Rhagfyr, pan oedd ychydig o dan 800,400 o lwybrau cleifion ar agor.