How to post a dental insurance payment: a step-by-step checklist
Posting an insurance payment looks simple. In practice, one EOB can cover a dozen patients, a check can be short because of an old overpayment, and a single wrong click can leave a patient with a balance they don't owe.
This checklist works in any practice management system. Menus differ; the steps don't.
First, know the numbers on the EOB
Every line on an explanation of benefits (EOB) or electronic remittance advice (ERA) comes down to a few amounts. The ADA's guide to reading EOBs defines them:
- Billed (full fee): your office's usual fee for the procedure.
- Allowed (plan allowance): the fee the plan sets for that procedure. For a covered in-network procedure, plan payment plus patient payment should equal this amount.
- Paid: what the plan actually paid.
- Patient responsibility: what the patient owes you, such as the deductible and coinsurance.
- Write-off: the difference between your full fee and everything collected.
Worked example (in-network crown, made-up numbers):
| Line on the EOB | Amount |
|---|---|
| Billed (full fee) | $1,200 |
| Allowed by the PPO | $800 |
| Deductible not yet met | $50 |
| Plan covers crowns at | 50% |
| Plan paid: ($800 − $50) × 50% | $375 |
| Patient owes: $50 deductible + $375 coinsurance | $425 |
| Contractual write-off: $1,200 − $800 | $400 |
Check the math, as the ADA urges: plan ($375) plus patient ($425) equals the allowed amount ($800). Add the write-off ($400) and you're back at the full fee ($1,200). If the numbers don't tie out, stop before you post.
Plans differ in how they apply deductibles and percentages. Always post what the EOB says, not what you expected. If a code on the EOB is unfamiliar, our guide to reading the codes on a dental EOB explains them.
The checklist
1. Match the remittance to the money. Put the EOB or ERA next to the deposit it describes: the check, or the EFT line on your bank statement. Add up the claims on the remittance and confirm the total equals the deposit before you post a single line.
For electronic payments, the plan puts a matching trace number on both the EFT and the ERA so you can pair them, and federal operating rules generally require the ERA to be sent within three business days of the funds (CMS). If one arrives without the other for more than four business days, the plan must have a written process for tracking it down. Ask for it. Our guide to EOBs, ERAs and EFTs covers this in more detail.
If the deposit is smaller than the claims, look for an offset. Some payers recover an old overpayment by reducing a new payment (ADA News).
2. Find the right patient and the right claim. Match on patient name, subscriber, date of service, procedure codes and billed amount. Families with the same last name, the same subscriber and same-day appointments are where mistakes happen. If two claims could fit, don't guess.
3. Post line by line. Enter each procedure code separately, the way the EOB lists it: insurance paid, contractual write-off, and patient portion. A lump sum hides which procedure was reduced or denied.
4. Handle the exceptions.
- Denied lines ($0 paid): Post the zero and record the denial reason. The remark codes on the EOB explain the decision. Then follow office policy: appeal, write off, or bill the patient. Whether the patient can be billed depends on your contract and state law. If you appeal, the ADA advises doing it in writing.
- Partial payments: Post what was paid. Leave the unpaid lines open with a note so they get followed up.
- Overpayments and refund requests: A proper notice should identify the original claim and the patient; if it doesn't, ask. Link each refund or offset to the original claim so the same money isn't recovered twice (ADA News).
- Payment on a claim that's already closed: Don't create a new claim. Find out whether it's a duplicate payment (likely a refund) or an extra payment after an appeal, and handle it under the original claim.
- Coordination of benefits: The primary plan is generally the one where the patient is the employee or main policyholder; the secondary is the one where they're a dependent. The secondary usually wants the primary's EOB before it pays (ADA). Post the primary payment, send the secondary claim, and hold the write-off: the ADA says write-offs shouldn't be posted until all plans have paid.
5. Close the claim and attach the EOB. Once every line is posted, close the claim and scan or attach the EOB to the patient's record. You will need it for patient questions, appeals and refund requests.
6. Reconcile at the end of the day. Total posted should equal total deposited, payer by payer. If they differ, find out why before the next day's posting buries it: a missed EOB, a typo, an offset, or a payment posted twice.
Why accuracy matters
Every posting error lands somewhere. Post too little and the patient gets a bill they don't owe. Write off too much and you lose money you were owed. Either way, your aging report stops telling the truth about who owes what.
The work also adds up. The 2024 CAQH Index (2023 data) found that dental providers spend an average of six minutes handling a manual remittance, versus three minutes for a fully electronic one (CAQH).
Common mistakes to watch for
- Posting to the wrong family member or the wrong date of service.
- Posting a write-off after the primary pays, then again after the secondary.
- Posting the same payment twice, once from the portal EOB and once from the ERA. The CAQH Index warns that using both portals and ERAs can lead to duplicate posting.
- Treating the billed-versus-allowed difference as something the patient owes, instead of a contractual write-off.
- Skipping the deposit check, then hunting for the difference weeks later.
Post carefully, one line at a time, and the end-of-day numbers will match.
Sources
- ADA, Explanation of Benefits statement and Coordination of benefits
- CMS, EFT and ERA: Payment Remittance Reassociation Basics (June 2022)
- ADA News, Dear ADA: recoupments (September 2026)
- CAQH, 2024 CAQH Index report
This guide is general information, not legal or billing advice. Check your payer contracts and your state’s rules for your own practice.