What Are Good AR Days? 2026 Benchmarks by Specialty
By Ajay Pillai, CEO, Aayur Solutions
May 23, 2026
7 min read
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.
AR Aging Buckets: Collection Probability by Age
Your AR aging report shows outstanding balances segmented by how old they are. The longer a balance sits unpaid, the harder it is to collect. Here is the collection probability reality for each bucket:
| Age Bucket | Collection Probability | Required Action |
|---|---|---|
| 0–30 days | 95–98% | Normal workflow — first submission, awaiting payment |
| 31–60 days | 85–92% | Check claim status; resubmit if rejected; follow up on denials |
| 61–90 days | 70–80% | Active follow-up required; appeal denials; escalate missing payments |
| 91–120 days | 50–65% | Urgent follow-up; check timely filing deadlines; second-level appeals |
| 121–180 days | 25–45% | Escalate to supervisor; verify appeal windows haven't closed |
| 180+ days | <20% | Write-off analysis; patient statement if applicable; collection referral |
The goal is to keep your 90+ day bucket below 15% of total AR. If it exceeds 20%, you are likely watching collectible revenue age into write-offs. Every week a claim sits past 90 days without action, the collection probability drops further.
How Long Do Major Payers Actually Take to Pay?
Days in AR benchmarks look different depending on who owes you money. A practice heavy in Medicare will have different AR patterns than one heavy in commercial insurance or workers' comp.
| Payer Type | Avg Days to Pay (Clean Claim) | Common Delay Causes |
|---|---|---|
| Medicare (electronic) | 14–21 days | NPI issues, CMN missing for DME, modifier errors |
| Medicaid (varies by state) | 20–45 days | Prior auth gaps, eligibility mismatches, managed care routing |
| Commercial (BCBS, Aetna, Cigna) | 15–30 days | Medical necessity reviews, COB issues, credentialing delays |
| United Healthcare | 25–40 days | High prior auth volume, virtual first plan routing, facility fee disputes |
| Workers' Comp | 45–90 days | Adjuster reviews, IME requirements, disputed causation, state fee schedule disputes |
| Auto / Personal Injury | 60–120 days | Case resolution dependency, lien processing, attorney holdbacks |
If you have a high percentage of workers' comp or auto liability in your payer mix, expect higher Days in AR as a baseline. The benchmark table at the top of this post reflects a typical commercial/Medicare mix. Adjust your target accordingly if your mix skews toward slower-paying payer types.
How to Build a 30-Day AR Follow-Up Workflow
The single most impactful operational change most practices can make to reduce Days in AR is establishing a systematic follow-up workflow. Claims should not sit untouched — every unpaid claim needs a scheduled follow-up action at defined intervals.
- Day 0–14: Submit electronically. Confirm claim receipt and clearing via ERA/835 or portal. If rejected (not denied), correct and resubmit within 48 hours.
- Day 15–20: Check claim status for all high-value or complex claims. Verify clean claims are in payer adjudication queue. Flag any that show no status.
- Day 30: Work all unpaid claims that have not produced a remittance. Call payer or check portal. Document status in PM system with follow-up date.
- Day 45: Second follow-up on any claim still open at Day 30 follow-up. Escalate to supervisor if payer is unresponsive or citing processing delay past their contractual window.
- Day 60: File a formal appeal or reconsideration request for any denied claim that was not resolved in Day 30/45 cycle. Verify appeal window has not closed.
- Day 90: Final escalation. Any claim still unpaid at 90 days with no resolution path goes to senior AR or management. Check timely filing deadline — if approaching, expedite immediately.
This workflow only works if claims are assigned to specific staff, not worked from a pool queue. Pool queues create diffused accountability — no one person owns the follow-up, so claims age. Assign claim buckets by payer or by provider, and make the 30-day follow-up a non-negotiable scheduled task, not a reactive one.
Frequently Asked Questions
What is a good number of days in AR for a medical practice?
Under 30 days is excellent. 30–40 days is acceptable for most specialties. Over 50 days signals a significant revenue cycle problem requiring immediate root cause analysis. Best-performing practices typically average 18–24 days in AR.
How do you reduce days in accounts receivable?
The three fastest levers: (1) improve clean claim rate to eliminate rework cycles that add 15–45 days per denied claim, (2) establish a systematic 30/60/90-day follow-up workflow so no claim ages silently, and (3) fix denial root causes — especially eligibility and prior auth failures — at the front end rather than working individual appeals reactively.
What percentage of AR over 90 days is acceptable?
Under 15% of total outstanding AR in the 90+ day bucket is acceptable for most practices. Best performers keep it under 10%. Above 20% means denied and aged claims are not being worked aggressively, and write-off risk is accumulating. Pull your AR aging report today and calculate this percentage.
How is Days in AR calculated?
Days in AR = Total AR Balance ÷ (Total Charges Last 90 Days ÷ 90). Most PM systems calculate this automatically. You need at least 90 days of charge data for an accurate result. Note that this is a gross AR figure — it does not net out contractual adjustments the way some payers report it.
What is the difference between Days in AR and AR aging?
Days in AR is a single average number — how long it takes to collect, on average. AR aging is a breakdown of outstanding balances by time bucket (0–30, 31–60, 61–90, 91–120, 120+ days). Days in AR tells you the average; aging tells you where problem claims are concentrated. You need both to manage AR effectively.
How long do payers take to pay claims?
Medicare typically pays clean electronic claims in 14–21 days. Commercial payers (BCBS, Aetna, Cigna) average 15–30 days. Medicaid varies by state: 20–45 days is typical. Workers' comp and auto liability can take 45–120 days depending on case complexity. If your payer mix is heavy in workers' comp or auto, build that into your Days in AR expectations.
Book a free 15-minute RCM audit. We'll benchmark your Days in AR against your specialty and identify the specific drivers behind it.
Book Free RCM Audit →- CAQH Index 2025 — credentialing and provider enrollment timelines
- CAQH Index 2025 — prior authorization volumes, processing costs, automation rates
- CMS 2026 Medicare Physician Fee Schedule — final rule rates and policy updates
- HFMA MAP Keys — clean claim rate benchmarks, 2026
- MGMA DataDive — Days-in-AR benchmarks by specialty, 2026
- MGMA DataDive — rework cost per denied claim ($25–$118); denial preventability (90%), 2026
- Premier Inc. — national average claim denial rate (11.6%), 2025