D2751 is the CDT code for a crown made of porcelain fused to a predominantly base metal substructure (PFM) — a full-coverage restoration with a tooth-colored porcelain surface bonded to a substructure made mostly of base-metal alloy. It's distinguished from other PFM crowns purely by the metal content of the underlying alloy.
Informational only — confirm the official CDT descriptor and your payers' rules independently. This is general guidance, not billing, coding, or clinical advice.
When to Use the D2751 Code
Report D2751 when a tooth is restored with a porcelain-fused-to-metal crown whose substructure is predominantly base metal — alloys such as nickel-chromium or cobalt-chromium that contain little or no noble metal. Common indications mirror any PFM crown: a large failing restoration, a fracture or crack, extensive decay a filling can't support, or a tooth needing full coverage after a root canal.
Pick the PFM code by alloy content, not appearance:
- D2751 — porcelain fused to predominantly base metal (this code).
- D2752 — porcelain fused to noble metal.
- D2750 — porcelain fused to high noble metal.
Don't confuse D2751 with an all-ceramic crown (D2740), which has no metal core, or a full cast crown (D2790), which has no porcelain. Because base-metal PFM is often the most economical option, it's frequently what an "alternate benefit" downgrade pays — but you still code by what was actually placed.
Documentation & Clinical Scenarios
Crowns are a frequently reviewed benefit, so documentation should clearly justify full coverage:
- Tooth number and the reason a crown — not a filling — is needed (extent of decay or fracture, prior root canal, cusp involvement, failing large restoration).
- Pre-operative radiograph(s) and often intraoral photos of the tooth.
- A narrative explaining why the tooth is restorable and why full coverage is necessary.
- Dates — preparation and seat/delivery dates, since many payers tie the benefit to the seat date.
Note the alloy so the PFM code reflects the actual substructure, and keep the supporting evidence in the chart even when pre-authorization isn't required, in case of a post-payment review.
Insurance & Billing Tips
- Pre-authorize when in doubt. Many plans recommend or require a pre-estimate for crowns, with radiographs and photos attached.
- Base metal is often the benchmark. Because D2751 is typically the least expensive PFM, plans applying an alternate benefit may reimburse other crown types at this rate — useful context when quoting patients.
- Check frequency and waiting periods. Crowns often carry a replacement frequency limit (commonly every 5–7 years per tooth) and may have a waiting period on new plans.
- Confirm the benefit date rule. Whether the plan pays on the prep date or the seat date affects claims that span a benefit-year boundary.
- Bill buildups separately. A core buildup (D2950) or post-and-core is its own procedure when clinically necessary.
Example Case
A 49-year-old patient with a fractured upper premolar elects the most cost-effective full-coverage option, and the dentist plans a PFM crown with a predominantly base-metal substructure. The office verifies benefits, learns the plan pays crowns on a 7-year frequency with no waiting period, and submits a pre-estimate with a radiograph. The crown is prepped and later seated, and the claim is filed as D2751 with the seat date. Because the alloy was documented and benefits verified, the claim is paid at the expected level with the patient's estimate already accurate.
Patients call about "getting a crown" or "my crown came off" — not D2751. DentalReception AI answers those calls 24/7, books the prep or repair visit live into your schedule, and captures insurance details for clean intake, while coverage questions route to your team. See how it handles crown calls and lost crown calls, or book a demo.
Frequently Asked Questions
What's the difference between D2751, D2750, and D2752?
Only the alloy in the metal substructure. D2751 uses a predominantly base metal (mostly non-noble, such as nickel-chromium), D2752 uses a noble alloy, and D2750 uses a high noble alloy. All three are porcelain-fused-to-metal crowns and look alike to a patient, but plans may reimburse them differently, so code by the alloy actually used and record it on the lab prescription and in the chart.
Does D2751 include the core buildup or post?
No. A core buildup (D2950) or a post-and-core is a separate procedure with its own code when clinically necessary to support the crown. Document and bill it separately, with its own justification, rather than folding it into the crown fee. Including a needed buildup in the crown understates the work, while billing one that isn't necessary is an audit risk.
Will insurance pay the full crown benefit for D2751?
Often yes, because a predominantly base-metal PFM is frequently the alloy a plan's alternate benefit is calculated on — so D2751 may match the plan's allowance more closely than a high-noble crown would. Still, frequency limits and waiting periods apply, and coverage depends on the tooth being restorable. Verifying benefits before treatment confirms the allowance and lets you give the patient an accurate out-of-pocket estimate.
Do I need a pre-authorization for a D2751 crown?
Many plans recommend or require a pre-estimate for crowns, submitted with a radiograph and often intraoral photos. Even though base-metal PFM is usually the lowest-cost crown, crowns remain a frequently reviewed benefit, so getting the pre-estimate back before the prep appointment lets you confirm frequency limits and any waiting period and quote the patient an accurate amount before the tooth is prepared.
Confirm the current CDT descriptor and your specific payer policies before billing — browse the full dental code library or see our insurance verification feature.