The first batch of ancient charts are patients who have died > 3 years ago, usualy much more.
2nd batch will be those not seen in last 7 years (no peds).
as in this post about staff not wanting to get rid of paper it may be yesterday's charts, real soon.

Roger
(Nephrology)
Do the right thing. The rest doesn?t matter. Cold or warm. Tired or well-rested. Despised or honored. ? --Marcus Aurelius --