Is a two-surface silver filling covered by insurance?
Usually yes, as a basic service at 70 to 80% on most plans, after any deductible. A two-surface silver filling (code D2150) is a metal filling on a back tooth that covers two sides, most often the chewing surface plus the side that touches the next tooth. Plans pay it as one filling per tooth per day, no matter how the surfaces were drilled.
70 to 80%
Basic, one filling per tooth per day
One per tooth
Plans pay one filling per tooth per visit. Two single-surface fillings on the same tooth get combined into D2150 and paid once.
24 months
The replacement clock on most plans, tracked per surface. A recent filling on either surface can knock the claim down or out.
Two letters
Both surface letters go on the claim. One letter on a two-surface code reads as a mismatch and comes back for correction.
Downgrade target
D2150 is the allowance many plans pay for a two-surface white filling (D2392). One check before the visit shows which rate applies, before the patient asks.
What would a real check show for this patient's D2150?
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 · D2150
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 D2150 is the right code
- Back tooth, molar or premolar
- Silver metal filling
- Two surfaces of the same tooth, filled the same day
- Both surface letters on the claim
- Neither surface filled in the last 24 months
Documentation payers expect
Tooth number with both surface letters, plus a chart note or X-ray showing the decay. If either surface was filled recently, note why it needed redoing.
Why two-surface silver fillings get denied
What happens after the two-surface silver filling
The tooth goes back on the normal recall schedule, and the bitewings (D0274) at the next visit are what catch any new decay beside the filling. If that happens inside the 24-month window, the redo is usually on the patient, and if the tooth keeps breaking down, the next step is often a crown (D2750) at 50%, not another filling at 80%. Patients accept those numbers when they hear them early, which takes knowing the plan's basic and major percentages, which takes one check.
D2150, quick answers
Is a two-surface silver filling covered?
Usually, as a basic service at 70 to 80% on most plans after the deductible.
Can two small fillings on one tooth be billed separately?
Not the same day. Plans combine them into one two-surface claim and pay once, so bill D2150 from the start.
What if one surface was filled last year?
Most plans track the 24-month window by surface. Some pay the claim as a one-surface filling, some deny it; a chart note showing new decay is what changes that.
Does the surface order matter on the claim?
The letters matter more than the order. Two letters that match the tooth are required; one letter on a two-surface code comes back.
Why is D2150 on my EOB when I got a white filling?
That is the downgrade. Many plans pay a two-surface white filling (D2392) at the D2150 rate and leave the difference to the patient.
More questions? Schedule 15 minutes with us and bring your toughest plan.
Every two-surface filling, quoted right before the visit.
First month free, then $2.50 a check. No seat fees, no contract.
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Related: D2140 · D2160 · D2392
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.