# Which dental insurers downgrade without telling you?

> Ameritas, Guardian, Principal and Delta Dental all downgrade without a remark often enough that "no remark" proves nothing. As of September 2026, 36.7% of Ameritas downgrades, 21.7% of Guardian's, 16.7% of Principal's and 15.5% of Delta's carried no downgrade remark. Cigna (4.8%), MetLife (0.6%) and Aetna (0.0%) state nearly all of theirs.

_Updated 2026-09-08. Canonical: https://www.kaylie.ai/blog/which-dental-insurers-downgrade-without-saying-so_

Ameritas, Guardian, Principal and Delta Dental all apply a plan's alternate benefit
provision without saying so on the remittance often enough that an office cannot read
"no downgrade remark" as "not downgraded". As of September 2026, on paid lines for the
procedures that carry a standard downgrade target — posterior composites
(D2391–D2394), porcelain and ceramic crowns (D2740–D2752), bridge retainers and pontics —
36.7% of the Ameritas downgrades we identified carried no remark, against 21.7% for
Guardian, 16.7% for Principal, 15.5% for Delta Dental, 4.8% for Cigna, 0.6% for MetLife
and 0.0% for Aetna. From Cigna, MetLife and Aetna a missing remark is a reliable "no";
from the other four, about one downgrade in six (Delta) to one in three (Ameritas) shows
up only in the money.

## What we measured

| Carrier | Paid eligible lines | Downgraded | Rate | Stated on the remittance | Silent | Silent share |
|---|---|---|---|---|---|---|
| Ameritas | 183 | 90 | 49.2% | 57 | 33 | **36.7%** |
| Guardian | 1,941 | 892 | 46.0% | 698 | 194 | **21.7%** |
| Principal | 226 | 30 | 13.3% | 25 | 5 | **16.7%** |
| Delta Dental (all member companies) | 10,128 | 1,405 | 13.9% | 1,187 | 218 | **15.5%** |
| Cigna | 3,280 | 895 | 27.3% | 852 | 43 | 4.8% |
| MetLife | 2,844 | 865 | 30.4% | 860 | 5 | 0.6% |
| Aetna Dental Plans (PPO) | 443 | 60 | 13.5% | 60 | 0 | 0.0% |

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 and measured on 8 September 2026. Only carriers with at least 25
downgrades stated in words appear in the table — below that there is nothing to compare
silence against.

Two smaller carriers are worth naming with their sample size attached. Humana downgraded
15 of 156 eligible lines and stated none of the 15 — a carrier we see comparatively little
of, so read it as a direction, not a rate. Aetna's DMO product downgraded 13 of 25 lines
and stated all 13. UnitedHealthcare downgraded 14 of 1,027 lines and stated all 14, which
is a low rate on a large sample rather than an absence of evidence.

**"Silent" has a precise meaning here.** It means the remittance carried no downgrade
remark, but the allowed amount was below the contracted fee for the billed code, or the
carrier issued a substitute line paying a cheaper procedure the office never performed. It
does not mean the carrier hid anything deliberately, and it does not mean the payment was
wrong. It means the only place the downgrade appears is in the money.

## What the carriers' own policies say

The two carriers with the highest silent share both publish the rule plainly. Ameritas, in
its own product document: "If two or more procedures are considered adequate and
appropriate to correct a dental condition, payment is based on the charge for the least
expensive procedure… For example, if you perform a composite on a molar tooth, we'll
consider and process the procedure as an amalgam. Your office can collect the difference
between the MAC fee for the amalgam and the MAC fee for the composite." (*Ameritas Life
Insurance Corp — AM 668 (8-25) Product Document*, 2025.)

Principal states the same rule and names who applies it: "There are times when more than
one procedure could correct a dental condition. In these cases, benefits are allowed for
the least expensive procedure that will provide professionally acceptable results. This
determination is made by a licensed Dental Consultant based on the documentation submitted
with the claim." ([*Principal Dental Clinical Guidelines*](https://secure02.principal.com/publicvsupply/GetFile?fm=GP62410&ty=VOP&EXT=.VOP), GP62410, undated.)

So the silence is on the remittance, not in the contract. Both carriers told the office in
advance what they would do; neither reliably repeats it on the claim that does it.

## Why it depends on the plan group

A carrier-level silent share is a prior, not a verdict, because the carrier is not the
thing that decides. The employer group is. On one measured example — one-surface posterior
composites (D2391) under Cigna — the carrier-level split is 58 lines downgraded against 56
not, a coin flip that tells an office nothing. Split by employer group, the same lines are
near-unanimous: 43 of 43 downgraded on one group, 40 of 40 never downgraded on another.
Across 3,790 employer groups measured 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.

Read the table as "how much can I trust this carrier's remarks", not as "will this patient
be downgraded".

## What to do

- **Check the allowed amount against your contracted fee for the code you billed, line by
  line.** On a downgraded line the allowed amount is the alternate benefit's fee, so it
  sits below your contracted fee for the billed code even when nothing on the page says so.
  That comparison is the only test that works on all seven carriers.
- **Watch for a substitute line.** Some carriers zero the code you billed and pay a second
  line for a procedure you did not perform. Read both lines together; the zeroed one alone
  looks like a denial.
- **Record the answer against the group number, not the carrier.** A note that says "this
  carrier downgrades" will be wrong for about a quarter of that carrier's plans. A note
  against the employer group number will be right about 98% of the time.
- **Quote the patient the difference before treatment, not after.** Where a plan downgrades,
  the patient owes the gap between the two allowed amounts, and being in network does not
  change that.
- **Check what your practice management system already assumes.** Some ship default
  substitution rules for posterior composites that apply to every plan unless they are
  switched off, which will understate the estimate on plans that do not downgrade.

Numbers last refreshed September 2026.