# What is a dental insurance downgrade (alternate benefit provision)?

> A downgrade is the plan's alternate benefit provision: where two treatments are both acceptable, the plan pays for the cheaper one and the patient owes the difference. Posterior composites are paid as amalgam, porcelain crowns as cast metal. As of September 2026 the measured rate runs from under 2% to nearly 50% across the carriers we see in volume.

_Updated 2026-09-08. Canonical: https://www.kaylie.ai/blog/what-is-a-dental-downgrade_

A downgrade is what a dental plan's **alternate benefit provision** does: when more than one
treatment would produce a professionally acceptable result, the plan pays its percentage of
the allowed amount for the cheaper treatment, not the one you performed, and the patient
owes the difference. The two you will meet daily are a posterior composite (D2391–D2394)
paid at the amalgam fee (D2140–D2161) and a porcelain or ceramic crown (D2740–D2752) paid at
a cast-metal fee (D2790–D2792). It is also called LEAT — least expensive
alternative treatment — and some carriers write LEPAT, least expensive professionally accepted
treatment. As of September 2026 the measured rate runs from under 2% to nearly 50% across
the carriers Kaylie measures in volume — the table below is the scope of that range.

## What we measured

| Carrier | Paid eligible lines | Downgraded | Rate |
|---|---|---|---|
| Ameritas | 183 | 90 | 49.2% |
| Guardian | 1,941 | 892 | 46.0% |
| MetLife | 2,844 | 865 | 30.4% |
| Cigna | 3,280 | 895 | 27.3% |
| Delta Dental (all member companies) | 10,128 | 1,405 | 13.9% |
| Aetna Dental Plans (PPO) | 443 | 60 | 13.5% |
| Principal | 226 | 30 | 13.3% |
| UnitedHealthcare | 1,027 | 14 | 1.4% |

A line is one procedure on one claim; these are paid explanation-of-benefits lines on the
twenty procedure codes that carry a standard downgrade target, pooled across the
practices Kaylie serves, measured on 8 September 2026.

## What the carriers' own policies say

The cleanest definition belongs to MetLife's federal brochure: "**Alternate Benefit** — If we
determine a service less costly than the one performed by your dentist could have been
performed by your dentist, we will pay benefits based upon the less costly services."
([*The MetLife Federal Dental Plan 2026 FEDVIP Brochure*](https://www.opm.gov/healthcare-insurance/healthcare/plan-information/plans/pdf/2026/brochures/02AP-11.pdf), OPM.) The same brochure settles the
question offices are asked most: "the Dentist may charge you or your dependent for the
difference… **This is the case even if the service is performed by an In-Network dentist.**"

Humana states it in the words a patient would use: "Composite (white) fillings are only
covered on anterior (front) teeth. An alternate benefit is allowed for composite fillings on
posterior (back) teeth where the plan will cover the cost of an amalgam (silver) filling and
the member is responsible for any cost over the covered amount." (*Humana Dental Smart Choice
Florida Low Plan 2026 Individual SBC*.)

United Concordia explains why a code you never billed shows up on the explanation of
benefits: "the reported procedure code(s) will be **changed** to the code allowed under the
contract's Alternate Benefit Provision (ABP) limitation." (*United Concordia Dental PPO
Clinical Policy*.)

## How the patient's share actually moves

Take a crown, with round numbers for the arithmetic. Your fee is $1,000, the plan covers
crowns at 50%, and the deductible is met. Paid on the crown you placed, the plan pays $500 and
the patient owes $500. Re-priced by the alternate benefit provision to a full-cast crown with a
$700 allowed amount, the plan pays 50% of $700 — $350 — and the patient owes $650. The coverage
percentage never changed; the fee it was applied to did. That is why a verification confirming
"crowns at 50%" cannot tell you what the claim will pay.

Carriers publish the same arithmetic themselves. Blue Cross Blue Shield of South Carolina's
provider manual states the right first: "The exception to this is when you bill a code and
BlueCross applies an alternate procedure code when processing the claim. You can bill the
member the difference between the allowance for the alternate procedure code and the code you
filed." Then it works the numbers: "you charge $100 for a procedure. The fee allowance for
this procedure is $90. The fee allowance for the alternate procedure code is $80… The member
is responsible for the difference in our payment and the fee allowance of $90." (*BCBS South
Carolina Dental Provider Administrative Office Manual*, February 2026.) The gap between the
$100 charge and the $90 allowance stays the office's contracted write-off; what the alternate
benefit moves onto the member is the difference between the two allowances. And BCBS FEP
Dental's own consumer guide works a full case: implants at $1,000 against a partial denture
allowed at $500, covered at 50%, leaving the member $750 (*BCBS FEP Dental Alternate Benefits
Guide*, 2024).

## On a copay-schedule dental HMO there is no allowance to re-base — so it surcharges

On a copay-schedule DHMO each procedure has a fixed copay, so there is no allowance to re-base
and the plan cannot pay you "the amalgam rate". Most price the better material as a surcharge
instead — an add-on the patient pays: "porcelain, resin or resin-based composite is used on
molar crowns, the member is responsible for an additional $75 co-payment above the set crown
co-payment" (*MetLife SafeGuard DHMO Schedule of Benefits*, undated); "There is a $75 CoPayment
per molar, for the use of porcelain" and "An additional charge, not to exceed $150 per unit…
for any procedure using noble, high noble or titanium metal" (*MetLife Take Along Dental DHMO
Schedule of Benefits, Florida*); "no more than an additional $125 for these materials" (*United
Concordia Concordia Plus Schedule of Benefits*). Same economics, opposite paperwork — and it
never appears on an explanation of benefits as an alternate benefit at all. Blue Shield of
California is the exception that states a substitution outright on a dental HMO document: its
HMO Benefit Guidelines, quoted below, re-base a posterior composite to the amalgam level.

## Why it depends on the plan group

The carrier writes the clause; the employer buys it or does not. Blue Shield of California
states the rule and its own exception in one paragraph: "The use of composite or plastic
materials on posterior teeth will be paid at the same level as the comparable amalgam
restoration… If the Member's specific Dental Plan provides for posterior composite fillings
as a benefit, then the DPA will not substitute the 'alternative benefit' of an amalgam
filling for a posterior tooth." ([*Blue Shield of California HMO Benefit Guidelines*](https://www.blueshieldca.com/content/dam/bsca/en/provider/docs/Dental-BlueShieldHMOPlansDHMO.pdf), January
2026.)

The measurement agrees. Across 3,790 employer groups in August 2026, whether a plan
downgrades posterior composites is settled **within the group 97.7% of the time**, against
77.0% at carrier level. On one-surface composites under Cigna, the carrier-level split is 58
downgraded against 56 not — and by group, 43 of 43 downgraded on one and 40 of 40 never
downgraded on another.

## What to do

- **Read the allowed amount against your contracted fee for the code you billed.** That
  comparison finds a downgrade whether or not the remittance mentions one.
- **Record the answer against the employer group number**, with the tooth scope beside it.
- **Quote the patient the difference between the two allowed amounts** before treatment, and
  put the substitute code in the estimate so the number is explainable later.
- **Check your practice management system's default substitution rules**, which may apply to
  every plan unless switched off.

Numbers last refreshed September 2026.