Dental crowns and insurance
How plans usually pay crowns and buildups, the X-rays and notes insurers want, how often a crown is replaced, and why crown claims get denied.
Crowns are major services, often paid at 50% after the deductible, and they use up the yearly maximum fast. They also get denied more than most work, usually over evidence.
What insurers look for
- X-rays from before treatment. Delta Dental of Illinois says the image should be from within a year of the crown prep and show the whole tooth, root tip included. Images of the prepped tooth don't count.
- A reason the tooth needs a crown, such as decay or a fracture the X-ray or a photo shows. Intraoral photos often help when an X-ray can't show a crack.
- A healthy foundation. Delta Dental has denied crowns where the X-ray showed heavy bone loss or untreated infection at the root.
Buildups
A buildup rebuilds a broken-down tooth before the crown. Delta Dental says one is generally needed when 50% or more of the tooth is broken or decayed, wants an X-ray from within a year plus a written report, and treats a buildup that only fills small gaps as part of the crown prep. The ADA's advice: bill what you actually did, not what you think will be paid. Plans that fold a buildup into the crown are bundling, which the ADA opposes.
Typical limits
- 1 crown per tooth every 5 to 7 years.
- A waiting period on major work for a new plan, often longer than for basic work.
- An alternate benefit on some plans, such as paying a back-tooth porcelain crown at a metal crown's rate.
Before the visit
- Check the major percentage, deductible left and yearly maximum left.
- Find the last crown on that tooth in the claims history.
- For a large case, send a predetermination first.
- Quote the patient with the maximum applied, in the order the work will be billed.
This is how plans usually work, not how every plan works. The patient's own plan documents and the insurer decide what's paid.
Codes you'll see
CDT is a registered trademark of the American Dental Association. Tabruns is not affiliated with or endorsed by the ADA. The descriptions here are our own plain-English summaries, not the ADA's official wording; use your current CDT manual or practice software for the official code set.
Terms on this page
Sources
Read November 11, 2026. Where a source describes one insurer's plans, we say so.
- Delta Dental, “What does my dental insurance cover?”
- Delta Dental of Illinois, “How to avoid claim denials for crowns”
- Delta Dental, claim tips for core buildups
- Delta Dental, X-ray claim guidelines and tips
- ADA New Dentist Blog, “Decoding Dental Benefits: Core buildup”
- KYT Dental Services, dental insurance frequency limits
Get the patient's share in dollars, from the benefits page
Knowing how plans pay for crowns is half the job. Tabruns reads the coverage, deductible, yearly maximum, waiting periods and frequency limits from the insurer's portal and works out what the patient owes. Patient details stay on the office computer.
Not ready? Try the free patient portion calculator.