What Are Good AR Days? 2026 Benchmarks by Specialty
Under 30 days in AR is excellent performance for most specialties. 30–40 days is average. 40–50 days needs attention. Over 50 days is a significant revenue cycle problem that requires immediate root cause analysis.
How Days in AR Is Calculated
Days in AR (also called Days Sales Outstanding or DSO) measures how long it takes, on average, to collect payment after a service is provided. The formula:
Most PM systems calculate this automatically. If yours doesn't, you can calculate it manually using your AR balance and your last 90 days of total charges.
2026 Benchmarks by Specialty
| Specialty | Excellent | Average | Problem |
|---|---|---|---|
| Primary Care | <28 days | 28–40 days | >50 days |
| Internal Medicine | <30 days | 30–42 days | >52 days |
| Pain Management | <32 days | 32–45 days | >55 days |
| Behavioral Health | <30 days | 30–44 days | >55 days |
| DME / HME | <35 days | 35–50 days | >60 days |
| Dental | <25 days | 25–38 days | >48 days |
| Physical Therapy | <28 days | 28–40 days | >50 days |
| Cardiology | <32 days | 32–45 days | >55 days |
Benchmarks reflect 2026 operational data. DME/HME Days in AR tend to run higher due to prior authorization complexity and Medicare CMN requirements.
What Drives High Days in AR
Days in AR is a lagging indicator — it reflects decisions made weeks ago. When Days in AR is high, the root cause is almost always one of four things:
1. High First-Pass Denial Rate
Every denied claim adds days to your AR. A claim denied on day 15, appealed on day 30, and paid on day 60 added 45 days of AR that a clean first-pass submission would not have created. Reducing your denial rate is the single highest-leverage action for reducing Days in AR.
2. Slow Follow-Up on Unpaid Claims
Claims should be worked at 30 days if not paid. If your billing team or billing company doesn't have a systematic 30-day follow-up workflow on every outstanding claim, claims will age. The ones that age past 90 days become significantly harder to collect.
3. Slow Charge Entry After Service
The clock on Days in AR starts when the charge is entered, not when the service is provided. If your charge entry is consistently 5–7 days after the date of service, you've already added nearly a week to your effective Days in AR before the claim is even submitted.
4. Patient Balance Accumulation
Patient balances that are not billed promptly after insurance adjudication inflate AR. Most practices have 15–25% of their outstanding AR in patient balances. If that balance isn't being billed and followed up on systematically, it will age continuously.
Start with a denial rate analysis — it's the fastest-impact fix. Then review your charge entry lag time and your 30-day unpaid claim follow-up workflow. Most practices with Days in AR over 40 have at least two of these four problems contributing simultaneously.
Book a free 15-minute RCM audit. We'll benchmark your Days in AR against your specialty and identify the specific drivers behind it.
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