What does predetermination of benefits mean in the context of insurance? It means you send the payer the treatment you propose to perform, with the codes and the documentation, before you perform it, and the payer sends back a written statement of what the plan would pay if the work were done that day. It is an estimate produced by the people who will adjudicate the claim. It is not approval, it is not payment, and it sets no money aside.
The document travels under several names: pre-determination, pre-treatment estimate, pre-D, and on the medical side, pre-service review. The name matters less than the sentence near the bottom, which almost always says the estimate is subject to eligibility and benefits available on the date of service.
What the payer actually sends back
A predetermination response reads like an explanation of benefits with the payment column replaced by an estimate. It comes back code by code, and each line carries detail a plan-level eligibility check rarely gives you.
| What the response shows | Why it matters | The trap |
|---|---|---|
| Allowed amount per code | The basis for the patient's share, not your full fee | True as of the review date, and fee schedules get updated |
| Benefit percentage | How the plan classified this exact code | A crown sits in major on one plan and basic on another |
| Deductible applied | Whether the remaining deductible was subtracted here | It attaches to whichever claim arrives first, which may not be yours |
| Remaining annual maximum | The ceiling on what the plan can pay this year | The most volatile number on the page, moved by every other provider |
| Alternate benefit note | The plan priced a cheaper acceptable option | Often shows only as a lower allowed amount with a remark code |
| Frequency and history findings | Whether a prior service blocks or limits this one | History from other offices posts late |
| The disclaimer | Says plainly this is not a guarantee of payment | Payers do rely on it, so treat the estimate as an estimate |
Two of those lines do most of the damage when ignored. An allowed amount lower than your fee schedule assumed is a repricing problem to solve before treatment, not an adjustment to absorb afterward. And when the response quietly priced a cheaper alternative, the difference lands on the patient. Our explainer on what an alternate benefit provision means covers that arithmetic.
What is the difference between predetermination of benefits and prior authorization?
One is advice. The other is permission.
| Term | What it usually is | Required? | What you receive | Binding on payment? |
|---|---|---|---|---|
| Predetermination of benefits | A priced review of proposed codes | Voluntary under most plans | A written estimate, code by code | No |
| Prior authorization or preauthorization | Approval to proceed | Required when the plan says so | An approval number with an expiration | Necessity only, not payment |
| Precertification | Advance certification, common on medical plans | Required when the plan says so | A certification number | Necessity only, not payment |
| Eligibility and benefits verification | Plan-level coverage check | Do it every time | Percentages, maximum, deductible | No |
The difference shows up when you skip it. Skip a predetermination and you lose accuracy: the case still adjudicates on its merits. Skip a required prior authorization and the plan can deny the claim on that basis alone, and your network agreement may bar you from billing the patient for the balance.
Which services require prior approval is a plan-by-plan question, never a carrier-wide fact. Provisions are selected by the employer group that bought the coverage, so two patients holding cards from the same carrier can carry different rules. Verify three ways: the payer's provider manual for that product, the patient's plan documents, and a call where you capture the representative's name, the date and a reference number. For state Medicaid and CHIP dental programs, the authorization list lives in the state's dental provider manual. A longer comparison sits in our guide to dental pre-determination versus pre-authorization.
What is the difference between precertification and predetermination?
Precertification is largely a medical-side term. It asks whether a scheduled service or facility case is approved in advance, a gate you pass through rather than a quote you receive. Predetermination asks a money question: given this plan, these codes and this patient's remaining benefits, what would you pay?
Dental teams blur the two for a structural reason. The ADA dental claim form puts both into one transaction choice at the top, a single box covering a request for predetermination or preauthorization, next to the box for a statement of actual services. One checkbox, two different obligations.
It gets concrete when a case crosses to medical coverage, where real precertification requirements are far more common. Implants tied to trauma, impacted third molars, sleep apnea appliances and temporomandibular joint treatment are the usual crossovers. Our walkthrough of how to bill medical insurance for dental procedures covers what to check before scheduling.
How long does a predetermination take?
Two to four weeks is the range commonly quoted, and the reason is human: major cases go to a dental consultant for clinical review rather than straight through the system. Electronic submissions with readable radiographs and a dated narrative often return faster. Mailed ones sit at the long end.
The delay is almost always on the submitting side:
- Radiographs that are unreadable, undated, or do not show the tooth in question
- A narrative describing the procedure rather than the diagnosis and why the alternative will not work
- Wrong tooth number or a surface string that does not match the image
- Missing periodontal charting on scaling and root planing cases
- A request for more information, which in practice restarts the review rather than resuming it
There is no single legal clock you can quote at a payer. Where a plan requires approval before a service, federal rules for group health plans put non-urgent pre-service decisions on a defined timeline, and insured plans may face state utilization review deadlines too. A voluntary predetermination generally falls under neither, which is why nothing forces a payer to hurry. As of this writing that is the landscape, and it changes, so confirm with the plan documents and your state insurance department.
Treat pending predeterminations as accounts receivable work, not as mail you are waiting on. Log the submit date, set a 14 day follow-up, and call on the reference number.
How long is a dental predetermination good for?
Commonly 60 to 180 days, and most responses print their own expiration date. Read that date instead of assuming a house rule.
The window is the outer limit, not a promise. A predetermination stops being reliable the moment any of these happens:
- Coverage terminates, or the employer changes carriers mid-plan
- The benefit year rolls over, resetting the annual maximum and the deductible
- Another provider files a claim that consumes the remaining maximum
- The treatment plan changes, so the estimate covers codes you are no longer performing
- A frequency clock advances, such as a replacement interval measured from a service done elsewhere
Two habits keep this from biting. Re-verify eligibility 24 to 48 hours before the appointment, no matter how recent the predetermination. And where a patient has two plans, an estimate from the primary says nothing about how the secondary will coordinate. Our guide to coordination of benefits in dental insurance covers the order of operations.
One more thing about time. Sending a predetermination does not pause timely filing. That clock runs from the date of service, and limits commonly range from 90 days to a year depending on the plan and on state law.
When a predetermination earns the wait
Send one when the money or the ambiguity is large:
- Cases above whatever internal dollar threshold you set, often around a thousand dollars in proposed fees
- Implants, prosthetics, and any replacement where a missing tooth clause or replacement interval could apply
- Orthodontics, full mouth rehabilitation, and periodontal surgery
- Anything where verification returned a vague answer and nobody will commit to a number
- Cases where medical coverage may be primary
Skip it when the answer is already knowable: routine preventive and basic work, where percentage, frequency and history give you the number. Skip it when the tooth is not going to wait. A predetermination is an accuracy tool, not a permission slip, and delaying necessary treatment for one is a clinical decision you did not intend to make.
Filing the claim once the answer comes back
- Put the predetermination number in the field the claim form provides for it, and reattach the documentation rather than assuming the payer still has it.
- Bill the services you actually performed. If treatment changed at the chair, the old estimate does not cover the new codes.
- Compare the paid explanation of benefits against the predetermination line by line: allowed amount, percentage, deductible applied, remark codes.
- When the allowed amount paid is lower than the amount quoted, that is a discrepancy to work, not an adjustment to post. Our explainer on what counts as a dental write-off separates a contractual adjustment from money you can still pursue.
- Record what the plan did, by employer group, so the next estimate starts from evidence rather than a percentage.
What to tell the patient while you wait
Say the true thing in one sentence: the plan is reviewing the treatment and will tell us in writing what it expects to pay, and the final number still depends on coverage on the day of the appointment. What patients do not accept is a confident number in June and a different balance in July.
Curo reads the full benefit detail for a plan, including frequency history, alternate benefit rules and the remaining maximum, and prices the treatment plan from it, so a predetermination confirms a number you already trust instead of being the thing you wait on before you can quote. You can watch it run on your own patients in a walkthrough.
Whatever you decide about sending one, put three dates on the case: the day it went out, the day the answer came back, and the day it expires. A predetermination nobody tracks is a letter in a folder, and the patient's balance is what reminds you it existed.