Your unpaid bills sorted by how long they have been unpaid, and by who owes them. The list that answers “who is sitting on my money, and for how long?”
An aging list buckets every unpaid bill by how long it has been outstanding — typically 0–30, 31–60, 61–90 and over 90 days — and groups those buckets by payer.
The grouping is the part that matters in workers’ comp. One undifferentiated pile of “outstanding” tells you that money is late. Aged by payer, the same data tells you which carrier, MCO or TPA is consistently slow — which is a fact you can act on.
The first clock is the payer’s. Minnesota gives a carrier 30 days and charges 4% interest after that. Georgia expects payment in 30 days. Where a state publishes a payment clock, an aging list is how you know who crossed it.
The second clock is yours: timely filing. Ohio allows a year to file; Texas allows 95 days; Colorado 120. A bill that ages quietly past that line is not late any more, it is gone — and the same is true of a short-paid line you never rebilled.
Which is why the useful aging view separates “billed and waiting” from “paid short and needs rebilling.” They look identical on a spreadsheet and they need completely different actions.
Reports and aging shows the by-payer, by-bucket view, and the timely-filing lookup will tell you what your state’s clock is.
Timely filing · TPA · Adjuster
Fifteen minutes, your state’s codes on screen — or start the trial and poke around on your own.