Revenue cycle
Dental Insurance A/R: How to Prioritize 30-, 60-, and 90-Day Claims
By Zincat Editorial Team · Published · 4 min read

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Why aging buckets matter
An aging report sorts unpaid insurance balances by how long they have been outstanding, usually in 30-day buckets: 0 to 30, 31 to 60, 61 to 90, 91 to 120, and over 120 days. The report answers one question at a glance: is money moving or stalling?
In a healthy dental office, most insurance balances sit in the first bucket, because clean claims are typically processed within a few weeks. The further right the balance sits, the more likely something has gone wrong: a missing attachment, a coordination-of-benefits question, a claim the payer never received, or a denial nobody opened. Every bucket also moves the claim closer to a filing or appeal deadline, after which recovery may no longer be possible.
Because of this, the age of a claim is a proxy for its risk, not just its inconvenience. The goal of prioritization is to spend limited staff time where it has the highest chance of turning an open balance into a resolved account.
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The problem with working oldest first
Many offices work the report from the bottom up, starting with the oldest balances. It feels responsible, but it often wastes the most time. Claims older than 120 days are more likely to be past timely-filing limits, require extensive investigation, or be contractually closed. Meanwhile, 45-day claims that need only a quick status call or a missing radiograph age into the same trouble.
A better approach weighs three factors together: age, value, and deadline. A high-value 50-day claim missing a narrative is often a better use of 15 minutes than a low-value 200-day claim with no paper trail.
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A simple prioritization matrix
Use the table below as a starting point. Adapt the thresholds to your payer mix and the timely-filing and appeal limits in your payer contracts.
| Bucket | Typical issues | Primary action | Priority |
|---|---|---|---|
| 0–30 days | Normal processing, occasional rejections | Monitor clearinghouse rejections; fix and resubmit quickly | Monitor |
| 31–60 days | Missing attachments, pended claims, no response | Status check by portal; send requested documents | High |
| 61–90 days | Denials not worked, COB questions, claims not on file | Trace, correct, resubmit, or start appeal | Highest |
| 91–120 days | Appeals pending, repeated denials | Escalate, confirm deadlines, prepare appeal packets | High (deadline-driven) |
| 120+ days | Past deadlines, lost history, patient responsibility | Triage: recover, transfer to patient, or recommend write-off | Triage |
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Step 1: Clean the data before you work it
Before anyone picks up the phone, make sure the report reflects reality. Unposted ERAs and EOBs make balances look open when they are actually paid. Credits sitting on accounts can hide underlying issues. Duplicate claims inflate totals.
Spend the first session posting outstanding payments, resolving obvious duplicates, and filtering out patient-responsibility balances so the insurance report shows only insurance work.
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Step 2: Segment by payer and cause
Sort the 31-to-120-day balances by payer. Patterns appear quickly. If one plan holds a large share of older balances, look for a shared cause: a credentialing gap for a new associate, an address change on file, a recurring attachment requirement, or a policy change.
Then tag each claim with a likely cause. Common categories include: no claim on file, pended for information, denied, paid incorrectly, and secondary not filed. Tags turn a long list into a handful of repeatable workflows.
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Step 3: Rank within each bucket
Within each bucket, rank claims by value and deadline proximity. A practical rule many offices use is to work any claim within 30 days of a known filing or appeal deadline first, then the highest-value claims, then the rest in age order.
- Deadline within 30 days: work immediately
- Value above your chosen threshold: work this week
- Repeatable cause (for example, missing perio chart): batch-process
- Low value, low probability: schedule for triage review
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Step 4: Document every touch
The most expensive A/R is the claim that gets worked twice, or the one everyone assumes someone else handled. Every action should leave a note with the date, what was done, the payer reference number, and the next action date.
Consistent notes also protect you when staff change. A new team member should be able to open any account and know exactly where it stands.
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Step 5: Triage claims over 120 days
Older claims need a decision, not just effort. For each, confirm whether the filing or appeal deadline has passed under the payer’s rules. For Medicare, the general timely-filing limit is one calendar year from the date of service; commercial and dental plans set their own limits in contracts and plan documents.
If the claim is still within an appeal window and you have documentation, it may be recoverable. If the payer correctly determined the balance is patient responsibility, transfer it according to your financial policy. If neither applies, document why and present it for an approved write-off. Writing off by default, simply because a balance is old, removes the chance to learn why it happened.
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A weekly A/R routine
- Post all ERAs and EOBs received since the last session
- Review clearinghouse rejections and correct them the same day
- Run the aging report filtered to insurance balances only
- Work all claims within 30 days of a known deadline
- Work the 61–90 day bucket by value
- Work the 31–60 day bucket by value
- Batch-process claims with the same root cause
- Prepare appeals and route clinical content to providers
- Record a note and next action date on every account touched
- List write-off recommendations for owner approval
- Summarize the week: claims worked, resolved, and new root causes
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Measuring whether it is working
Track a small set of indicators monthly: the share of insurance A/R over 90 days, total days in A/R, denial reasons by frequency, and the number of accounts without a next action date. Improvement usually shows first in that last metric, then in movement out of the older buckets.
Avoid judging progress by a single month’s collections; deposits fluctuate with production and payer cycles. Look for steady movement and fewer repeat causes.
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When to bring in help
Consider outside support when older buckets keep growing despite effort, after staff turnover, or after a software conversion. A focused assessment can classify balances, separate actionable claims from closed ones, and produce a prioritized plan before you commit to ongoing work.
Frequently asked questions
What percentage of dental insurance A/R should be over 90 days?
There is no universal benchmark, because it varies by payer mix and specialty. Watch the trend: a steadily rising share over 90 days indicates follow-up gaps.
Should we work the oldest claims first?
Not automatically. Weigh age, value, and deadline together. Claims between 31 and 90 days are usually the most recoverable.
How often should we review insurance aging?
Weekly for working the queue, and monthly for trend review and root-cause analysis.
When should a claim be written off?
Only after confirming it is past deadlines or contractually closed and is not patient responsibility, and with documented owner approval.
Sources
- CMS: Medicare Claims Processing Manual, Chapter 1 (timely filing)
- American Dental Association: CDT Code
This article is general educational information, not legal, billing-compliance, or medical advice. Rules vary by payer, state, and contract; consult qualified advisors for your situation.
