Is a small silver filling covered by insurance?
Usually yes. Most plans treat fillings as a basic service and pay around 70 to 80% after the deductible. A one-surface silver filling (code D2140) is the smallest metal filling on a back tooth, repairing decay on a single side or the chewing surface. It is also the rate many plans fall back to when they downgrade a white filling on a back tooth.
70 to 80%
Basic service on most plans
24 months
The usual replacement window, per surface, per tooth. Refill the same surface sooner and most plans leave the whole fee on the patient.
The floor rate
D2140 is the allowance many plans use when they downgrade a white filling on a back tooth. Its fee sets the patient's gap on D2391.
Tooth + surface
The claim needs the tooth number and a surface letter. A missing surface is the fastest way to get a clean filling kicked back.
Deductible first
Fillings are often the first basic service a patient uses each year, so the deductible lands on this visit. One check shows what is left before the patient asks.
What would a real check show for this patient's D2140?
Pick a sample plan and type your per-tooth fee. This is the visibility a real-time check gives the desk for every actual patient, in under a second.
Eligibility readout · D2140
Sample- Coverage
- Active, basic covered at 80%
- Frequency
- Once per surface / 24 months
- Patient share
- Type your fee to see it
Estimate from a sample plan. A real check reads the actual plan in under a second.
When D2140 is the right code
- Back tooth, molar or premolar
- Silver metal filling material
- Decay or damage on one surface only
- That surface not filled in the last 24 months
- Tooth number and one surface letter on the claim
Documentation payers expect
Tooth number, the surface letter, and a chart note showing the decay or fracture. A current X-ray is worth attaching when that surface was filled before.
Why small silver fillings get denied
What happens after the small silver filling
Most patients go back to routine recall, D1110 cleanings and D0274 bitewings, and the filling sits quietly for years. The bill that surprises them is the first one: a small filling early in the plan year often lands entirely on the deductible, so the plan pays zero on a covered service. Knowing the deductible remaining before the visit, from one check, turns that into a sentence at scheduling instead of a fight at checkout.
D2140, quick answers
Does insurance cover a silver filling?
Most plans cover D2140 as a basic service, typically at 70 to 80% after the deductible.
How often will a plan pay to redo it?
Typically once per surface every 24 months. Inside that window, the redo is usually the patient's cost unless new decay is documented.
Why did the plan pay nothing on my filling?
Usually the deductible. A small filling is often the first basic service of the year, and the deductible comes out of it before the plan pays a share.
Does D2140 need prior authorization?
Almost never. It is one of the simplest claims in dentistry; the tooth number, surface letter and a chart note are enough.
Why does D2140 matter for white fillings?
Because many plans use the D2140 fee as the allowance when they downgrade a white filling on a back tooth (D2391). The patient's gap is the difference between the two fees.
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CDT is maintained by the American Dental Association. This page is Valian's own plain-English summary for front-desk teams, not official CDT descriptor text, and is not billing or clinical advice. Coverage patterns are common plan behaviors; every plan differs. Verify benefits before treatment.