Every practice has it: the aging bucket nobody wants to open. Balances at 120, 180, 240 days and beyond, sitting on the AR report, technically still “receivable,” quietly reminding you of work you did and never got paid for. The uncomfortable question is the honest one. Will any of it actually pay, and what do you do about the part that won’t?
We think old AR deserves a clear-eyed answer instead of hope. Some of it is still recoverable and worth pursuing hard. Some of it is gone and is costing you by staying on the books. The skill is telling the two apart and acting decisively on each. Here is how we work it.
Why AR ages out in the first place
Old AR is rarely one problem. It is an accumulation of smaller failures that were never resolved when they were young and fixable. Denials that were never worked. Claims that went out with an error and were never corrected. Secondary balances that stalled. Patient balances that were stated once and then forgotten. Underpayments nobody caught.
The common thread is time. Every one of these was more recoverable at 30 days than at 30 days plus another five months. [EP172 — insert exact aging-AR figure/story here] Understanding this matters because it tells you where the real fix is: not in heroically chasing old balances, but in keeping AR from aging in the first place. Old AR is the symptom. Unworked young AR is the disease.
The half-life of a dollar in AR
Here is the principle that should drive every decision about old AR: the older a balance gets, the less likely it is ever to be collected. Collectibility decays with age, and the decay accelerates past certain thresholds.
Insurance balances run into timely-filing and appeal deadlines that can make a claim literally uncollectible once passed, no matter how legitimate it was. Patient balances decay as contact information goes stale, as memory of the visit fades, and as the patient’s willingness to pay an old bill drops.
This is why triage matters more than effort. Throwing equal energy at every old balance wastes your team on dollars that will never come. The question is not “can we work this,” it is “is this still recoverable, and is it worth what it will take to recover it.”
Triage: sorting recoverable from gone
Work your old AR the way you would triage a full waiting room, by urgency and yield, not by order of arrival.
Sort first by size and recoverability. Large balances that are still within their filing and appeal windows are your priority. They are winnable and they matter. Balances that have passed the deadline that makes them uncollectible are, bluntly, not worth clinical-grade effort, and pretending otherwise just ties up your staff.
For each old balance, get to a real status: Is this still within a window where an appeal or corrected claim can win it back? Is the denial reason actually appealable, or was this a genuine non-covered service? For patient balances, is the contact information current and the amount correct, or is this a phantom balance from a posting error that should be cleaned up rather than pursued?
That last point matters. Some old AR is not real. It is a phantom balance from a posting mistake, and the right action is to correct the account, not to chase money the patient never owed.
Working the recoverable balances
For the old AR that is genuinely recoverable, treat it as a focused project with a deadline, not a background task that competes with live work and always loses.
Give the recoverable balances an owner and a clock. Work them oldest-and-largest first, so the dollars closest to expiring and the balances that matter most get attention before the window closes. For insurance balances, that means corrected claims and appeals filed before deadlines. For patient balances, it means verifying the amount is real, confirming current contact information, and running a defined follow-up sequence rather than one forgotten statement.
The reason this works as a project and not a habit is that old AR requires concentrated attention to clear. Left to compete with today’s payments and today’s denials, it will always be deferred, which is how it got old in the first place.
Deciding what to let go
Then there is the AR that is genuinely gone: past the deadline that makes it uncollectible, a legitimately non-covered service, a patient who cannot be located, an amount too small to justify the cost of pursuit. Keeping it on the books does not make it more collectible. It just distorts your numbers and gives you a falsely inflated sense of what you are owed.
Writing off truly uncollectible AR is not defeat, it is hygiene. It makes your AR report honest, so the balances that remain are the ones actually worth working. A clean AR you can trust is more useful than a bloated one full of dollars that will never arrive. Just be sure the write-off decision is deliberate and documented, not a shortcut to avoid the work of triage.
The real fix is upstream
Clearing old AR is worth doing, but the durable win is making sure it stops forming. Every dollar you rescue from the 180-day bucket is a dollar that should have been collected months ago, at a fraction of the effort. Tight eligibility, clean charge capture, careful payment posting, and denials worked while they are young are what keep AR from aging into this problem at all.
Old AR is a lagging indicator of upstream discipline. Fix the upstream, and the aging buckets shrink on their own. The posting and reconciliation discipline that prevents old AR is exactly what our checklist is built to install.
When old balances are genuinely worth chasing, our accounts receivable recovery services go after them systematically instead of letting them age out.
Get the checklist: https://eligibility.natrevmd.com/payment-posting-checklist
