Your dental plan sent a statement covered in codes and percentages. Here is what each line means, and which number is the one you actually owe.
A dental EOB is not laid out like a medical one, and the difference is not cosmetic. It carries a procedure code on every line, and it carries a running total that no medical EOB has. Both are worth reading.
Example dental EOB — crown, in-network (illustrative figures)
| Line | Amount | Meaning |
|---|---|---|
| Procedure | D2740 — crown, porcelain/ceramic | |
| Submitted amount | $1,400.00 | What the dentist billed |
| Allowed amount | $1,150.00 | The contracted rate for this network |
| Contract adjustment | $250.00 | Written off — you do not owe this |
| Deductible applied | $50.00 | Your annual deductible |
| Plan pays at | 70% | Major-care coinsurance on this tier |
| Plan payment | $770.00 | 70% of $1,100 after deductible |
| Patient portion | $380.00 | Deductible plus your 30% |
| Maximum used to date | $770.00 of $2,000 | What is left for the rest of the year |
Figures above are illustrative and do not reproduce any real claim.
The Line Medical EOBs Do Not Have
Look at the last row: maximum used to date. Dental plans cap what the plan will pay in a year — commonly $1,000, $1,500 or $2,000 — and every paid claim spends down that pot.
This is the reverse of a medical out-of-pocket maximum. A medical OOP max is the ceiling on your spending, and hitting it is good news. A dental annual maximum is the ceiling on the plan's spending, and hitting it means you are now paying 100% of everything.
In the example above, one crown has consumed $770 of a $2,000 maximum. A second crown later that year would exhaust nearly all of what remains.
Two Numbers Reduce the Bill and Only One Is Yours
The contract adjustment of $250 is the network write-off. Your dentist agreed to accept the allowed amount in exchange for network participation, so that $250 disappears and cannot be billed to you.
The deductible of $50 also reduces what the plan pays — but you owe it. It comes out of your pocket, not the dentist's. Both lines shrink the plan payment; only one of them shrinks what you owe.
That is why the arithmetic runs $1,150 allowed, minus the $50 deductible, leaves $1,100 the plan applies its 70% to — $770 paid, $380 yours.
Reading the Procedure Codes
Every line is coded, and the code tells you which benefit tier the service fell into — which in turn tells you what coinsurance and which waiting period applied. If a claim was denied or paid at an unexpected percentage, the code is where the answer starts.
Codes you will actually see on a dental EOB
| Code | Procedure | Tier |
|---|---|---|
| D0120 | Periodic oral evaluation (check-up) | Preventive |
| D1110 | Prophylaxis — adult cleaning | Preventive |
| D0274 | Bitewing X-rays, four films | Preventive |
| D2391 | Resin filling, one surface, posterior | Basic |
| D7140 | Extraction, erupted tooth | Basic |
| D2740 | Crown — porcelain/ceramic | Major |
| D3330 | Root canal — molar | Major |
If the code on your EOB does not match the procedure you remember having, that is worth a call to the dental office before you call the insurer. Coding corrections are common and are handled by the practice, not the plan.
Four Reasons a Dental Claim Pays Less Than Expected
- The waiting period had not run. Major care commonly waits 12 months. A crown claimed before then is denied in full even though the plan is active and paid up.
- The annual maximum was already spent. Check the running total, not just the current line.
- A frequency limit applied. Cleanings are usually covered twice a year; a third is yours regardless of tier.
- The dentist is out of network. Out-of-network coinsurance is lower on every tier and is measured against the network fee schedule, so the gap widens twice over.
What to Do With It
The EOB is not a bill. Wait for the practice's statement, then compare the two: the statement should match the patient portion on the EOB. If it is higher, that is a billing question for the practice. If the EOB itself looks wrong — wrong tier, wrong percentage, wrong maximum — that is a question for the plan.
If you are holding a dental EOB and the numbers do not add up, call (713) 575-9904 and read me the line.