Days in A/R: The One Number That Tells You If Your Billing Is Working
Accounts receivable is where practice revenue quietly dies. Here's what 'days in A/R' really means, what a healthy number looks like, and how to keep aging claims from becoming write-offs.
By Novusmedix
If you could only track one number to know whether your billing is actually working, it would be days in A/R — the average time it takes to get paid after a claim goes out. It's the clearest single signal of revenue cycle health, and most practices don't watch it closely enough.
Here's what it means, why it matters, and what to do when it starts climbing.
What days in A/R actually tells you
Accounts receivable is all the money owed to your practice that hasn't been collected yet. "Days in A/R" turns that into a single, trackable number: on average, how long your money sits unpaid before it lands in your account.
- A low, stable number means claims are going out clean, getting paid quickly, and your cash flow is healthy.
- A rising number means money is getting stuck somewhere — denials piling up, claims aging, follow-up falling behind.
The trend matters more than any single reading. A number that's creeping up month over month is an early warning that something in your revenue cycle is breaking down, well before it shows up in your bank balance.
Where the money gets stuck
When days in A/R climbs, it's usually one of these:
Denials that aren't worked. Denied claims that sit unappealed age quietly until they're past the payer's deadline — then they're gone for good.
Aging claims nobody chases. Claims that don't get paid on the first pass need active follow-up. Without it, they sit in the 60, 90, 120-day buckets getting less collectible by the week.
Front-end errors. Eligibility not checked, coding mistakes, missing authorizations — these create denials that lengthen the whole cycle. The cleaner the claim goes out, the faster it comes back paid.
No prioritization. Not all aging claims are equal. Without a system to work the highest-value and soonest-to-expire claims first, the wrong ones get attention while the recoverable ones age out.
The A/R aging buckets that matter
Healthy A/R isn't just a low average — it's about where the money sits. Receivables are usually grouped by age: 0–30 days, 31–60, 61–90, 91–120, and 120+. The older the bucket, the less likely you are to ever collect it.
The danger sign isn't a big A/R total — it's a big total sitting in the 90+ and 120+ buckets. That's money on its way to becoming a write-off. A healthy practice keeps its receivables weighted toward the newer buckets and actively works anything that starts to age.
How to bring days in A/R down
There's no single trick — it's discipline on both ends of the cycle:
Front end: verify eligibility every time, code accurately, and scrub claims before they go out. Fewer denials means a shorter cycle.
Back end: work every denial promptly, follow up on aging claims consistently, and prioritize by value and deadline so nothing recoverable ages out.
Do both consistently and days in A/R falls — which simply means you're getting paid faster and losing less.
The bottom line
Days in A/R is the number that tells the truth about your billing. If you don't know yours, that's the first thing to fix — because you can't manage what you can't see. If it's rising, or if too much of your money is sitting in the 90+ buckets, your revenue cycle needs attention before those claims turn into permanent losses.
Novusmedix keeps A/R moving for healthcare practices — working aging claims and denials consistently so revenue comes in faster and less gets written off. If you'd like a clear read on your current A/R, start a conversation with us.