Can Dentists Bill Medical Insurance? The Complete Guide for Dental Practices

Can Dentists Bill Medical Insurance? The Complete Guide for Dental Practices

If you've ever wondered whether your dental practice can bill medical insurance, the answer is yes — and most practices are leaving significant revenue on the table because they don't know how.

This isn't a loophole or a gray area. It's a legitimate billing pathway that's been available for years, and dental practices doing sleep apnea, TMJ, airway, and trauma work are particularly well-positioned to take advantage of it.

Here's everything you need to know.

Why Can Dentists Bill Medical Insurance?

Medical insurance covers procedures when they're medically necessary — meaning the treatment addresses a condition that affects a patient's overall health, not just their teeth.

Many of the procedures dental practices perform every day meet that definition. A sleep apnea appliance addresses a serious medical condition that affects cardiovascular health, cognitive function, and quality of life. TMJ treatment addresses chronic pain that can cause migraines, jaw dysfunction, and neurological symptoms. Trauma cases — implants, crowns, and endo resulting from accidents — are clearly medical in nature.

When a procedure has medical necessity, it can be billed to medical insurance using medical billing codes — CPT codes for the procedure and ICD-10 codes for the diagnosis — rather than the CDT codes used for dental billing.

What's the Difference Between Dental and Medical Billing?

Dental billing uses CDT (Current Dental Terminology) codes and is submitted to dental insurance carriers on an ADA claim form.

Medical billing uses CPT (Current Procedural Terminology) codes for procedures and ICD-10 codes for diagnoses, and is submitted to medical insurance carriers on a CMS 1500 form.

The two systems are completely separate — which is both the challenge and the opportunity. Most dental practice management software isn't built to handle medical billing, which is why most practices never attempt it. But the practices that do figure it out often see 30% or higher reimbursements from medical insurance compared to dental insurance for the same procedures.

In many cases you can bill both dental and medical insurance for the same visit, with medical acting as the primary payer and dental as secondary. That means significantly more revenue per patient encounter without adding a single new procedure to your schedule.

What Do You Need to Bill Medical Insurance as a Dentist?

To bill medical insurance successfully, you'll need a few things in place:

National Provider Identifier (NPI). Every provider who bills medical insurance needs an NPI. If you don't have one, you can apply at nppes.cms.hhs.gov at no cost.

Medical insurance credentialing. You'll need to be credentialed with the medical insurance carriers you want to bill. This process varies by carrier and can take several weeks to a few months.

The right codes. Billing medical insurance requires translating your CDT dental codes into the appropriate CPT procedure codes and pairing them with the correct ICD-10 diagnosis codes. This crosscoding process is one of the biggest pain points for dental practices attempting medical billing for the first time.

Medical necessity documentation. Medical insurance carriers require documentation that supports the medical necessity of the procedure — typically a clinical note, a letter of medical necessity, or both. This documentation needs to be specific, clinically detailed, and directly tied to the diagnosis codes on the claim.

A CMS 1500 claim form. Medical claims are submitted on the CMS 1500 form, not the ADA dental claim form. Most dental practice management systems don't support this form natively, which is why many practices still submit medical claims on paper or via fax.

A clearinghouse connection. Electronic claim submission through a medical clearinghouse like Optum is far more reliable than paper submission — you get immediate confirmation that your claim was received, real-time status updates, and significantly lower denial rates.

How Does the Billing Process Work?

The basic workflow for billing a dental procedure to medical insurance looks like this:

First, you document the patient encounter thoroughly — capturing the clinical findings, the diagnosis, and the treatment performed. The more detailed the documentation, the stronger the claim.

Next, you identify the appropriate CPT code for the procedure and the ICD-10 code or codes for the diagnosis. If prior authorization is required — which is common for sleep apnea appliances and TMJ treatment — you submit that request before the procedure and receive an authorization number.

Then you generate the claim on a CMS 1500 form, attach any required documentation, and submit it electronically to the patient's medical insurance carrier through a clearinghouse.

After submission you track the claim status, respond to any requests for additional information, and follow up on denials when necessary.

It's a more involved process than dental billing — but the reimbursement rates make it worth it for the right practices.

Is Medical Billing Worth It for Your Practice?

The honest answer is that it depends on your procedure mix.

Practices doing significant volumes of sleep apnea, TMJ, airway, trauma, or surgical work tend to see the strongest return from medical billing. General practices doing primarily preventive and restorative work will see fewer opportunities — though even periodic exams can be billed to medical insurance in many cases.

Collin Kwasnik, a practicing dentist in Vermont who co-founded Coral, has been billing medical insurance at his practice for several years. He sees approximately 30% higher reimbursements from medical insurance compared to dental insurance for the same procedures. For sleep appliances and TMJ treatment, the difference is even more significant.

The learning curve is real — but so is the payoff. And with the right tools, the workflow is far more manageable than most practices expect.

The Bottom Line

Yes, dentists can bill medical insurance. Practices doing procedures with medical necessity — sleep apnea, TMJ, airway, trauma, and more — are potentially leaving thousands of dollars per month on the table by not doing so.

The barriers are real: different codes, different forms, different workflows, and documentation requirements that most dental software wasn't built to handle. But those barriers are solvable, and the practices that solve them first in their area tend to develop a significant competitive advantage.

If you're curious about what medical billing could look like for your practice, Coral was built specifically for this. Book a demo at coral.dental and we'll show you exactly how it works.