Days in AR is one of the most closely watched metrics in healthcare revenue cycle management — and one of the clearest indicators of how efficiently your practice is collecting what it’s owed. A rising days-in-AR figure is almost always a signal that something upstream is broken, whether that’s denial rates, billing speed, or follow-up consistency.
How to Calculate Days in AR
Days in AR = (Total AR Balance ÷ Average Daily Charges)
Where Average Daily Charges = Total Charges in the Period ÷ Number of Days in the Period.
For example: if your practice has $480,000 in total outstanding AR and averages $12,000 in daily charges, your days in AR is 40. Most billing platforms calculate this automatically — but knowing the formula helps you understand what’s actually driving the number.
Benchmarks
- Under 40 days: good performance
- Under 30 days: best-in-class
- 50+ days: action needed immediately
Days in AR above 50 is a significant warning sign. Claims sitting unpaid for that long are at risk of approaching payer timely-filing limits, and recovery rates on aged accounts decline meaningfully as time passes.
What High AR Days Signal
A rising days-in-AR number rarely has a single cause. It usually reflects a combination of:
- A high claim denial rate creating rework that delays final payment.
- Slow initial claim submission — claims that should go out within 24–48 hours of the visit are sitting in queue.
- Inadequate follow-up on unpaid or denied claims past 30 days.
- Patient balance collection issues, where self-pay or high-deductible accounts aren’t being worked effectively.
The AR Aging Buckets Explained
AR is typically reported in aging buckets: 0–30 days, 31–60 days, 61–90 days, and 90+ days. A healthy AR distribution has the large majority of balances in the 0–30 bucket. When more than 20–25% of your total AR sits in the 90+ bucket, collections are likely being permanently written off at an elevated rate.
How to Reduce Days in AR
- Submit claims within 24–48 hours of the encounter — delays in submission directly add to AR days.
- Verify eligibility proactively to reduce first-pass denials.
- Set follow-up triggers at 30 days for unpaid claims — don’t wait for 60.
- Work the 90+ day bucket aggressively — every claim in that bucket is at risk of becoming uncollectable.
- Track denial rate by payer to identify where systemic delays are concentrated.
📌 Contact Us to learn how our AR Management service helps practices reduce days in AR — or book a free AR review with our team.