What Are Dental Claim Denials and How to Avoid Them?

A dental claim denial means the dental benefit plan processed a claim and decided not to pay for a reported service. Denials slow down a practice’s collections, and each one takes staff time to read, correct or appeal. This guide explains how a denial differs from a rejected claim or a request for information, then walks through the checks a practice or its dental billing company can make before a claim goes out.

What is a dental claim denial?

Not every unpaid claim is a denial. Payers use their own terms, so read the response you actually received. As one example, Delta Dental of Colorado’s clean-claims guide describes three separate outcomes:

• Rejected claim: the practice receives a Submission Rejection stating why the claim was rejected, and a new, corrected claim has to be submitted.
• Claim denied for information (DFI): the practice receives a Request for Information document. It can be returned with the corrected information and any supporting documentation, or a new claim can be submitted with the corrected information.
• Denied claim: the claim comes with an explanation of benefits (EOB) whose codes say why it was denied. The guide notes that if a new claim does not correct every issue listed on the EOB, it may be denied again.

These are that payer’s terms and steps, not a rule for every plan.

Read the claim response before choosing the next step

A submission rejection, a request for more information and a benefit denial can call for different responses. Review the reason and instructions on the actual response before correcting the claim, supplying documentation or considering an appeal. Follow the applicable plan’s process rather than assuming every unsuccessful claim needs the same response.

Authorization and pre-certification

Check whether the patient’s plan requires authorization before the proposed service. If a predetermination or authorization is required, submit it according to the plan’s instructions before treatment when the plan requires that sequence.

Patient benefit verification

Verify each patient’s benefits before the procedure. Patients may not know what their plan covers, or whether it is still active. Plans can have annual maximums, exclusions, waiting periods, contractual limitations and frequency limits, and a missing tooth clause can lead to a denial. Confirm these details with the plan before treatment, or have a billing company check them for you.

Also Read: 10 Reasons Dental Insurance Claims May Be Denied

Claim information review

Missing or inconsistent information can delay processing or lead to a request for additional information. Before submitting, check that the claim matches what the payer has on file. The Delta Dental of Colorado guide linked above gives these examples for its own claims:

• Complete all the necessary fields on the claim form and include the necessary attachments.
• Submit the correct member ID number and the member’s legal name, not a nickname.
• Enter the billing dentist and treating dentist details the same way they were submitted at credentialing, including the practice’s Taxpayer Identification Number and addresses.
• Report the treating dentist’s own NPI rather than the facility’s. An office that is unsure of an NPI can look it up in the NPPES NPI Registry.

Other payers publish their own checklists, so use the one for the plan you are billing.

Claim forms and coding references

Use the appropriate claim form for the benefit plan. For reporting dental services to a patient’s dental benefit plan, consult the ADA Dental Claim Form guidance. The ADA promotes use and acceptance of the most current version of its dental claim form by dentists and payers. Whoever prepares the claim should work from the current form and code set.

Radiographs and chart documentation

Check that the documentation submitted with the claim is legible and matches the applicable plan’s requirements for the reported procedure. In its October 2025 documentation guidance, Delta Dental lists procedure-specific radiographs and chart documentation; for the listed crown and oral-surgery procedures, it describes photographs as “any available.” Check the applicable payer guidance rather than assuming an intraoral photograph replaces a required radiograph or that a camera alone prevents a denial.

Billing staff experience

Clean claims depend on the person preparing them. Dental billing takes working knowledge of claim forms, dental procedure codes and each plan’s rules, plus time on the phone to follow up on unpaid claims and appeals. In many offices the person doing the billing is also answering calls and checking in patients, which makes it harder to review every claim before it goes out.

If your team does not have that time, consider giving the work to staff or a billing company whose only job is billing. Ask how long they have handled dental claims, who will work on your account and how they report on denied and overdue claims.

What to do when a dental claim is denied

Prevention will not catch everything. When a claim is denied, read the EOB, correct anything that was wrong or missing, and decide whether an appeal is warranted. The ADA’s 2020 guide to filing an appeal says an appeal should be a written request to the plan to reconsider the claim, and that a phone call is not enough. It also advises dentists to:

• Follow the particular plan’s instructions, including the required form, the department to send it to and the time frame the plan allows.
• Include relevant information that was not sent with the original claim. The guide lists radiographs, photographs, charting and a narrative description as documentation that may help.
• Put the word “appeal” prominently in the title and text of the document and in any cover letter.

Appeal deadlines and the number of appeal levels vary by plan, so check the plan’s own documents.

Related guides: see 6 dental insurance recoupment dilemmas, check our dental billing tips for practice teams, review how the dental billing process works, or compare when outsourcing dental billing makes sense. Explore our dental insurance billing services (2.75% rate, $250 monthly minimum, 30-day free trial) for claims follow-up, payment posting and accounts receivable support. Contact eDental Billing to discuss your practice’s billing needs.