Implants · Updated 2026-09-08 · 5 min read
What are the exceptions to the missing tooth clause?
The five documented exceptions to the missing tooth clause, the plans where it expires after 12 or 24 months, and what carries over when the patient changes carriers.
A missing tooth clause stops the plan paying for the first bridge (D6240, D6740–D6752), implant (D6010), partial (D5211/D5213) or denture (D5110/D5120) replacing a tooth lost before coverage began — but five documented exceptions take a case out of it. The appliance also replaces a tooth lost after coverage began. The appliance replaces an existing failed prosthesis rather than filling a gap for the first time. The patient has been continuously covered long enough, because on many plans the clause expires after 24 or 12 months. The patient is a child on a pediatric dental benefit, where the clause is switched off by age. Or a state regulator has disallowed the clause on that product. One thing that is usually not an exception: a congenitally missing tooth, which most carriers exclude separately. Kaylie has not measured this question separately; the measured counts for the clause are in What is a missing tooth clause?.
What the carriers' own policies say
One newly lost tooth rehabilitates the appliance. "Charges for a partial or full denture or fixed bridge which includes replacement of a tooth which was missing prior to your Coverage Date under the Policy; except this exclusion will not apply if such partial or full denture or fixed bridge also includes replacement of a missing tooth which was extracted after your Coverage Date." (Blue Cross Blue Shield of Illinois Blue Dental Plus Premier Outline of Coverage 2026; the Texas outline is word-for-word the same.) Guardian writes the same condition from the other direction: it will not pay for a prosthesis replacing pre-coverage teeth "unless the Dental Prosthesis also replaces one or more eligible natural teeth lost or extracted after the Covered Dependent became covered by this Policy". A patient who lost #18 years before enrolling and later loses #19 while covered can have an appliance replacing both.
Replacing an existing failed prosthesis. "The MTC does not apply to replacement prosthetics." (Anthem Dental Clinical Policy 06-701, Abutment Crowns and Fixed Partial Dentures.) Delta's older federal wording states the positive version: prosthodontic services "will be covered when replacing or repairing a pre-existing, failed prosthodontic appliance/device that was in existence prior to your coverage effective date". (Delta Dental FEDVIP 2024 brochure, Section 4.)
The clause expires. "No benefits are available for expenses involving the replacement of teeth that were missing prior to the effective date of the contract. This exclusion will not apply after a member is enrolled in the contract for 24 consecutive months." (2026 Federal DentalBlue Brochure, Blue Cross Blue Shield of Alabama.) Anthem's common shape is the same clock: "Missing tooth clause of 24 months applies for the replacement of congenitally missing teeth or teeth lost prior to the coverage effective date for this plan" (Anthem Dental Essential Choice PPO Classic, California plan code C51, Summary of Benefits), and some Anthem plans use a 12-month continuous-coverage carve-in instead. Some Cigna DPPO plans use a reduction that lapses: 50% of the amount otherwise payable until the patient has been covered 12 months, then a normal Class III expense. One Delta federal program grades it rather than removing it — for the first 24 months "the plans [sic] pays 30% and the enrollee pays 70%", and from month 25 the plan pays 60% (Delta Dental Federal Government Programs Dental Office Handbook 2026, footnote 3).
Children. DentaQuest's Virginia PPO excludes "Services related to a tooth missing at the effective date of coverage for persons age 19 and over" (DentaQuest Virginia PPO Benefit Summary 2026) — under 19 the exclusion does not apply, because pediatric dental is an essential health benefit under the Affordable Care Act. Principal's missing tooth provision likewise does not apply to pediatric essential benefits.
A state regulator. Aetna's Tooth Missing But Not Replaced Rule carries its own exemption in the heading: "(This item does not apply to California or Texas residents under the DMO plan)". And when Delta Dental Insurance Company added a missing tooth exclusion to its individual PPO Premium plans effective 1 August 2025, it did so "except in California". Read those narrowly: they establish that these carriers do not apply the clause on those products in those states, not that any state bans missing tooth clauses generally.
Switching carriers is only sometimes an exception. Principal's missing tooth provision allows continuous-coverage credit when it replaces a prior carrier. Aetna's federal brochure measures the look-back to the enrollee's first coverage "under a participating FEDVIP plan or the prior TRDP plan" — the Federal Employees Dental and Vision Insurance Program, or the TRICARE Retiree Dental Program that preceded it — not to the day they joined Aetna. On most other plans the clock restarts with the new coverage, and years under the old carrier buy nothing.
Why it depends on the plan
Every exception above is a contract term, which is why two patients with the same carrier get different answers. Across 4,990 employer groups in Kaylie's verified answers in August 2026, all the plans in one group gave the same missing-tooth answer 97.9% of the time, against 84.2% for the carrier alone.
What to do
Ask for the exceptions, not just for the clause. Four questions cover them: is the clause permanent or does it expire, and after how many months; does it lift if the appliance also replaces a tooth extracted after the coverage date; does credit carry over from the prior carrier; and how are congenitally missing teeth treated.
Then collect the dates that decide it — extraction date for every tooth in the span, the coverage effective date on this plan, and the date coverage started with the prior carrier if there was one. Where an exception applies, say which one on the claim narrative and attach the dates; a reviewer applying the pontic rule needs to see that the span includes a tooth lost while covered. Record the answers against the employer group, not the patient.
Numbers last refreshed September 2026.