D2750 is the CDT code for a crown made of porcelain fused to a high noble metal substructure (PFM) — a full-coverage restoration with a tooth-colored porcelain surface bonded to a high-noble alloy core. 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 D2750 Code
Report D2750 when a tooth is restored with a porcelain-fused-to-metal crown whose substructure is a high noble alloy — by the CDT/ADA definition, an alloy containing at least 60% noble metal with at least 40% gold. Common indications include a tooth with a large failing restoration, a fracture or crack, extensive decay a filling can't reliably support, or a tooth that has had a root canal and needs full coverage.
Pick the PFM code by alloy content, not by appearance:
- D2750 — porcelain fused to high noble metal (this code).
- D2752 — porcelain fused to noble metal.
- D2751 — porcelain fused to predominantly base metal.
Don't confuse D2750 with an all-ceramic crown (D2740), which has no metal substructure, or with a full cast crown (D2790), which has no porcelain. Coding by the material actually delivered matters because plans reimburse crown types differently.
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 showing the tooth's condition.
- 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.
The tooth must be restorable; if it can't be saved, the plan won't cover a crown. Note the alloy used so the PFM code reflects the actual substructure, and keep supporting evidence in the chart 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.
- Expect possible down-coding. Some plans reimburse all crown types at the rate of a base-metal or non-precious crown ("alternate benefit"), leaving the patient the difference for a high-noble alloy.
- 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 58-year-old patient cracks a heavily restored lower molar. The dentist confirms the tooth is restorable but needs full coverage and plans a PFM crown using a high noble alloy for strength on a posterior tooth. The office submits a pre-estimate with a radiograph and photo; the plan confirms coverage with a 5-year frequency limit, noting it pays crowns at a non-precious alternate benefit. The crown is prepped and later seated, and the claim is filed as D2750 with the seat date. Because benefits were verified, the patient's estimate already reflected the alloy difference.
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Frequently Asked Questions
What's the difference between D2750, D2751, and D2752?
Only the alloy in the metal substructure. D2750 uses a high noble alloy (at least 60% noble metal, 40%+ gold), D2752 uses a noble alloy, and D2751 uses a predominantly base metal. All three are porcelain-fused-to-metal crowns that look similar to a patient, but some plans reimburse them differently, so code by the alloy actually used and note it in the lab prescription and chart.
Does D2750 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 rolling it into the crown fee. Bundling a needed buildup into the crown can understate the work, while billing an unnecessary one is an audit risk.
Will insurance pay the full high-noble rate?
Not always. Many plans apply an alternate benefit and reimburse any crown at the rate of a less expensive type — often a non-precious or base-metal crown — so the high-noble alloy in D2750 may leave a larger patient portion. Verifying benefits before treatment lets you give the patient an accurate estimate and explain any difference between the plan's allowance and the crown actually placed.
Do I need a pre-authorization for a D2750 crown?
Many plans recommend or require a pre-estimate for crowns, submitted with a radiograph and often intraoral photos. Because crowns are a frequently reviewed benefit and may be down-coded by alloy, getting the pre-estimate back before the prep appointment lets you quote the patient an accurate out-of-pocket amount and confirm frequency limits and any waiting period 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.