Every billing team faces the same problem: more unpaid claims than hours in the day. When the aging report shows hundreds of open accounts, choosing what to work first matters as much as how hard your team works.
Smart AR follow up in medical billing means touching the right accounts at the right time. This guide shows how to prioritize AR follow up by balance and payer, build a simple scoring method, and set a daily routine your team can follow.
What AR Follow Up in Medical Billing Covers
AR follow up is the work of tracking every unpaid claim and patient balance until it is paid, appealed, or closed correctly. Many practices hand this work to a dedicated healthcare accounts receivable team, because it decides whether aging claims get rescued or quietly written off.
A typical AR follow up routine includes:
- Checking claim status through payer portals or calls
- Working denials and requesting reprocessing
- Catching underpayments against contracted rates
- Billing secondary insurance and patients
- Escalating accounts near filing deadlines
Why AR Follow Up Prioritization Matters
No team can chase every claim at once. In Experian Health’s State of Claims survey, 75% of providers said denials are increasing, and 40% reported denial rates above 10% of claims.
Kodiak Solutions reported that the overall initial denial rate fell to 10.63% in the first half of the year, from 12.00% a year earlier. Yet for commercial claims, Healthcare Finance News reported the final denial rate rose 9.1% to 2.89%. Fewer claims are denied at first, but more denied claims stay denied without persistent AR follow up.
Benchmarks give you a target. MGMA guidance puts days in A/R under 40 for physician groups, with strong performers below 30. HFMA guidance suggests keeping claims older than 90 days under 10% of total receivables. For the full cycle view, see our guide to managing the AR cycle in medical billing.
Step 1: Prioritize AR Follow Up by Balance
Balance is the easiest place to start because it shows on every report. But the biggest balance is not always the best first call. Sort your AR follow up queue into tiers:
- Tier 1, high balance and still young: Work first. Payers still respond quickly.
- Tier 2, high balance and aged: Escalate for appeal or supervisor review.
- Tier 3, mid balance: Work in batches by payer.
- Tier 4, low balance: Use automated status checks or bulk reprocessing.
Set your own dollar lines based on average claim value. A pediatric practice and a surgery group will draw them in very different places.
Never rank by balance alone. A large claim far past the filing window may be worth less than a mid-size claim one phone call from payment. When a high balance traces back to a denial, route it into denial management instead of a plain status check.
Step 2: Prioritize AR Follow Up by Payer
Payers behave differently, so your AR follow up queue should reflect that. Pull your own history and group each payer by:
- Average days to pay
- Common denial reasons
- Preferred contact method, such as portal, phone, or fax
- Timely filing and appeal windows
Then build simple payer groups:
- Fast payers: A quick portal status check is usually enough.
- Slow payers: Start AR follow up right after their typical payment window passes.
- Denial-heavy plans: Send these to staff who handle documentation and appeals.
- Government programs: Follow program specific rules and deadlines closely.
- Patient balances: Use statements, reminders, and payment plans.
A single average can hide problems. Overall days in A/R may look healthy while one payer lags far behind, so track days in A/R by payer. If denials fill much of your queue, this guide on denial work queue prioritization is a useful companion.
Start with the payers that make up most of your open AR. Rank them by open balance and by average days to pay, then review that top group every week. Improving AR follow up for a few high-volume payers tends to move your numbers more than spreading effort evenly across every plan, and your team learns quickly where AR follow up effort pays off.
Then keep a one page payer playbook for each major payer. Include:
- Portal link and phone path
- Typical turnaround on status requests
- Documents required for appeals
- Filing and appeal deadlines
- Escalation contacts for stalled claims
Review each playbook every quarter, since payer rules change. A good playbook cuts hold time and lets new staff run AR follow up with less training.
Payer review also exposes short payments. A paid claim is not always paid correctly, so compare remittances against contracted rates through underpayment tracking.
Step 3: Combine Balance and Payer into One Priority Score
Once you have both views, merge them. A simple three factor score keeps AR follow up decisions fast and fair:
- Recoverable balance: High, medium, or low
- Payer responsiveness: Fast, average, or slow
- Deadline pressure: Close to a filing or appeal deadline, moderate, or none
| Priority | Balance | Payer | Deadline | Action |
|---|---|---|---|---|
| P1: Today | High | Any | Close | Call or appeal now |
| P2: This week | High | Slow or denial-heavy | Moderate | Escalate with documentation |
| P3: Batch | Medium | Average | Moderate | Portal check, then resubmit |
| P4: Automate | Low | Fast | None | Statement cycle or bulk reprocess |
Here is a hypothetical example. Claim A is a large balance with a slow payer and an appeal window closing soon. Claim B is a similar balance with a fast payer and plenty of time. Claim A goes first, because waiting costs you the claim.
Deadline pressure should override everything else, since a missed window turns a recoverable claim into a write-off. Ranking this way also helps you reduce days in A/R without adding staff, because effort goes where it returns the most cash.
Build a Daily AR Follow Up Workflow
A score only works if the team uses it every day. Keep the AR follow up routine short:
- Refresh the aging report each morning and filter by payer and bucket.
- Pull P1 accounts first and confirm deadlines and filing room.
- Work status checks in batches by payer, so callers stay in one portal or one script.
- Log every touch with the date, contact, reference number, and next action date.
- Send denials with a clear root cause to the right queue.
- Review paid and closed accounts weekly to see what worked.
Notes matter more than most teams admit. A clear next action date keeps accounts from sitting untouched. Accurate posting matters too, because a mis-posted payment sends your team chasing money already collected. Reliable payment posting keeps the aging report honest.
Metrics That Show Your AR Follow Up Is Working
Pick a baseline first. Record where each metric stands today, so you can see real progress after you change how you prioritize AR follow up. Then review these weekly, and compare them by payer when you can:
- Days in A/R, overall and by payer: Shows where cash is slowing down
- Percentage of A/R older than 90 days: Your clearest warning of future write-offs
- Initial and final denial rate: Separates front end problems from follow up gaps
- Net collection rate: Shows how much collectible revenue you keep
- Dollars recovered per hour of AR follow up: Tells you if your priorities are paying off
Watch the trend, not a single week. If days in A/R drops but the over 90 days bucket does not, your team may be clearing easy accounts and avoiding hard ones. A dashboard built around core RCM KPIs makes that pattern easy to spot.
When to Bring In Outside AR Follow Up Support
If your queue grows faster than your team can clear it, outside help can make sense. Common signs include:
- The over 90 days bucket keeps growing
- Staff spend more time on status calls than on denials
- The same payer problems keep repeating
- Month end pushes leave older accounts untouched
- Turnover leaves gaps in payer knowledge
Outsourcing does not mean losing control. Ask any partner how they would rank your AR follow up queue before you sign. Share your payer playbooks and priority rules at the start, and ask for payer level reporting and clear escalation rules. ProMantra supports providers across all 50 states. Our specialists work AR follow up by payer and balance, document every touch, and feed denial trends back to your front end, which keeps your own team focused on complex cases. It is one part of our wider revenue cycle management services.
Frequently Asked Questions
What is AR follow up in medical billing?
AR follow up is the process of tracking unpaid insurance claims and patient balances after submission, then contacting payers or patients until each account is paid, appealed, or closed. It covers status checks, denial work, underpayment review, and patient billing, and it runs daily in well-managed billing teams. In practice, teams rank accounts by balance, payer, and age so the most recoverable dollars are worked first. Done well, AR follow up shortens days in A/R and shrinks the share of claims that age past 90 days. Strong AR follow up also gives you cleaner data on how each payer behaves.
When should an unpaid claim be escalated or written off?
Follow your written policy. Confirm timely filing and appeal deadlines, review the denial reason and documentation, exhaust appeal options, and send the account for management review. Before writing anything off, check whether the balance can still be recovered from delayed reimbursements.
Should I work the highest balances first?
Not by themselves, because balance alone ignores payer and timing. Combine balance with payer behavior and deadline pressure. A mid-size claim near a deadline can deserve attention before a larger claim with plenty of time.
How often should I run AR follow up on unpaid claims?
Set the schedule by payer. Use each payer’s average days to pay from your own data, check status soon after that window passes, and log a next action date every time.
What is a good days in A/R target?
MGMA guidance puts the target under 40 days for physician groups, with strong performers below 30. Compare your results by payer, not just in total, and track the trend each month.
Turn Your Aging Report into a Ranked Plan
A clear priority system lets a small team recover more without working longer hours. If you would like help building one, contact ProMantra and our team will review your AR follow up process with you.
