D2740 is the CDT code for a crown made entirely of porcelain or ceramic — a full-coverage, tooth-colored restoration that caps a damaged tooth. It's reported for an all-ceramic crown on a single tooth, distinct from porcelain-fused-to-metal crowns (D2750–D2752) and full-cast crowns (D2790).
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 D2740 Code
Report D2740 when a tooth is restored with a full porcelain or ceramic crown. Common indications include a tooth with a large failing restoration, a fracture or crack, significant decay that a filling can't reliably support, or a tooth that has had a root canal and needs full-coverage protection. It's frequently chosen for front and visible teeth because the all-ceramic material is the most natural-looking option.
Pick the code by material: D2740 is all-ceramic/porcelain; D2750 is porcelain-fused-to-high-noble-metal; D2790 is a full cast crown. Coding by what was actually delivered matters, because some plans reimburse different crown types at different rates.
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/fracture, prior root canal, cusp involvement, failing large restoration).
- Pre-operative radiograph(s) and often intraoral photos showing the condition of the tooth.
- A narrative describing 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 on it. Keep the supporting evidence in the chart even when a 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.
- Expect possible down-coding. Some plans reimburse an all-ceramic crown at the rate of a less expensive crown type (an "alternate benefit"); knowing this up front lets you set accurate patient expectations.
- 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.
- Collect the patient estimate carefully. Because down-coding and frequency limits are common, verify benefits before the prep appointment so the patient portion is accurate.
Example Case
A 52-year-old patient fractures a cusp on an upper tooth. The dentist determines the tooth is restorable but needs full coverage, and the patient wants the most natural appearance, so an all-ceramic crown is planned. The office submits a pre-estimate with a radiograph and a photo; the plan confirms coverage with a 5-year frequency limit. The crown is prepped and later seated, and the claim is filed as D2740 with the seat date. Because benefits were verified and the documentation supported full coverage, the claim is paid at the expected level with no surprise to the patient.
Patients call about "getting a crown" or "my crown fell off" — not D2740. DentalReception AI answers those calls 24/7, books the prep or repair visit live into your schedule, and collects 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 D2740 and D2750?
Material. D2740 is an all-porcelain/ceramic crown, while D2750 is a porcelain-fused-to-high-noble-metal crown. They look similar to a patient but are different restorations, and some plans reimburse them at different rates — so code by what was actually placed.
Will insurance always pay the full all-ceramic rate?
Not always. Some plans apply an "alternate benefit" and reimburse an all-ceramic crown at the rate of a less expensive crown type, leaving a larger patient portion. Verifying benefits before treatment lets you give the patient an accurate estimate and avoid a billing surprise.
Does D2740 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. Document and bill it separately from the crown, with its own justification.
Do I need a pre-authorization for a D2740 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 to a less expensive crown type, getting the pre-estimate back before the prep appointment lets you quote the patient an accurate out-of-pocket amount.
Confirm the current CDT descriptor and your specific payer policies before billing — browse the full dental code library or see our insurance verification feature.