If you have ever stared at a billing form wondering which code to use for a 3D dental X-ray, you are not alone. Cone Beam CT (CBCT) has changed the way dentists plan implants, extract wisdom teeth, and diagnose complex jaw issues. But the coding system? That has not kept up as smoothly as we would like.
The good news is that once you understand a few basic rules, picking the right dental code for Cone Beam CT becomes second nature. You do not need a law degree or a coding certification. You just need a clear map.
This guide walks you through every relevant code, common real-world scenarios, and the mistakes that get claims rejected. We will keep the language simple and the examples practical.
Let us start with the most important question.
What Exactly Is a Cone Beam CT in Dentistry?
Before we talk about codes, let us make sure we are talking about the same thing. A Cone Beam CT is a special type of X-ray machine that spins around your head once. It captures hundreds of images in a single scan. Then, computer software stitches those images together to create a 3D model of your teeth, jaws, nerves, and sinuses.
Think of it like this. A regular dental X-ray is a flat photograph. A panoramic X-ray is a wider flat photograph. But a CBCT scan is like holding the actual skull in your hands and rotating it in any direction.
This technology helps dentists see things that are invisible on traditional films, such as:
- The exact path of a nerve before removing a lower wisdom tooth
- The amount of bone available for a dental implant
- Hidden infections at the tip of a root
- The position of a tooth that has not erupted
Because CBCT is more advanced than a standard X-ray, it has its own set of billing codes. And that is where things get interesting.
The Main Dental Code for Cone Beam CT: An Overview
The American Dental Association (ADA) publishes the Current Dental Terminology (CDT) codes. These are the standard codes used across North America. For Cone Beam CT, you will work with a small family of codes.
Here is the honest truth. There is not one single “dental code for Cone Beam CT.” There are several. Which one you use depends on three things:
- How much of the head is scanned (one small area, one full jaw, or both jaws)
- What the scan is for (implant planning, pathology, or general diagnosis)
- Who interprets the scan (the dentist or an outside radiologist)
Let me show you the main codes in a simple table.
| CDT Code | Full Description | What It Covers |
|---|---|---|
| D0367 | Cone beam CT – from one to two jaws – without interpretation | Scan of maxilla (upper jaw) and/or mandible (lower jaw) but the dentist does not write a separate report |
| D0368 | Cone beam CT – from one to two jaws – with interpretation | Scan of one or both jaws plus a written report from the dentist |
| D0388 | Cone beam CT – limited field of view – less than one whole jaw | A small, focused scan (e.g., one tooth, one implant site) |
| D0391 | Interpretation of diagnostic image by a dentist not the treating dentist | A second opinion or review by another dentist |
Wait. Why is there a “with” and “without” interpretation? That confuses a lot of people. Let me explain.
D0367 vs. D0368: What Is the Real Difference?
Many dentists and insurance billers mix these up. The difference is not about the machine or the scan itself. It is about the paperwork.
D0367 (without interpretation) means you took the scan, you looked at it yourself, and you made a treatment decision. You did not produce a separate, formal written report. This is common in busy general practices. You scan, you see the nerve, you extract the tooth. No extra letter to the file.
D0368 (with interpretation) means you took the scan and then you wrote a formal, separate report. This report describes the anatomy, notes any abnormalities, and explains how the findings affect treatment. Endodontists and oral surgeons often use this code because they want a clear record for themselves and for referring dentists.
Here is a helpful rule of thumb. If you would feel comfortable defending your scan findings in court with only the scan image and your chart note, use D0367. If you want a dedicated report that reads like a radiology result, use D0368.
Important note for readers: Some insurance plans only pay for D0368 if a separate radiologist or specialist interprets the scan. Always check your specific plan. Never assume coverage.
D0388: The Limited Field of View Code
Not every CBCT scan needs to capture the entire skull. Sometimes you only need to see one tooth. That is where D0388 comes in.
D0388 is for a limited field of view (FOV). That means the scan is smaller than one whole jaw. Examples include:
- A single tooth with a suspected crack
- The root of one tooth before a root canal
- One implant site (a few centimeters of bone)
- A small cyst or lesion
Many dentists prefer D0388 because it uses less radiation and focuses only on the area of interest. It is also easier to justify to insurance companies. Why scan the whole jaw when you only need to see one tooth?
However, be careful. Some offices use D0388 for everything because it is simpler. That can backfire. If you need to see both jaws, you cannot use a limited code. That would be inaccurate billing. Stick to what the scan actually shows.
When to Use D0391 (Second Opinion Interpretation)
D0391 is a sleeper code. Not many people talk about it, but it is useful.
Imagine this. A general dentist takes a CBCT scan of a patient’s lower jaw. The general dentist is not sure about a dark area near the nerve. So, the general dentist sends the scan to an oral radiologist or an oral surgeon for a second opinion. The second dentist does not treat the patient. They just look at the scan and write a report.
That second look is D0391. It covers the interpretation of a diagnostic image by a dentist who is not the treating dentist.
You cannot use this code for the original scan. You use it only for the expert review. It is a way to get paid for your time when you are helping another dentist with a tricky case.
A Realistic Look at Insurance Coverage
Let me be direct with you. Many dental insurance plans do not cover Cone Beam CT scans fully. Some do not cover them at all. Others cover them only under specific circumstances.
Here is what you can realistically expect.
Medical insurance sometimes covers CBCT if the reason for the scan is medical, not just dental. For example:
- Suspected jaw tumor or cyst
- Evaluation for sleep apnea surgery
- Trauma to the face or jaw
- Impacted teeth near critical nerves (like wisdom teeth)
Dental insurance tends to cover CBCT for:
- Implant planning (but often only one scan per implant case)
- Complex surgical extractions
- Orthodontic cases involving impacted canines
- TMJ (jaw joint) evaluation
But here is the hard truth. Many plans consider CBCT “experimental” or “not necessary” for routine procedures. You may need to submit a pre-authorization. That means you send the X-rays and a letter explaining why the scan is needed. Then the insurance company decides in advance if they will pay.
Even with pre-authorization, you might still receive a denial. Do not take it personally. It is the system.
Step-by-Step: How to Choose the Correct Code
Choosing the correct code does not have to be stressful. Follow this simple flow chart in your head.
Step 1: Ask yourself, “How much of the mouth did I scan?”
- One small area (one tooth, one implant site) → Go to Step 2.
- One whole jaw (all of the upper or all of the lower) → Go to Step 3.
- Both jaws (upper and lower in one scan) → Go to Step 3.
Step 2: Limited field of view. Use D0388.
Step 3: One or two jaws. Ask yourself, “Did I write a separate formal report?”
- No formal report → Use D0367.
- Yes, a separate report → Use D0368.
That is it. Do not overcomplicate it. The only remaining question is whether you need D0391 for a second opinion. That is a separate event.
Common Billing Mistakes (And How to Avoid Them)
I have seen thousands of dental claims over the years. Here are the most frequent errors with CBCT codes.
Mistake #1: Using D0368 when you did not write a report.
Insurance auditors look for this. If you cannot produce a separate, dated, signed report for that specific scan, the code is wrong. Change it to D0367 to avoid a clawback.
Mistake #2: Billing D0367 and D0368 together for the same scan.
You cannot bill both. It is either with interpretation or without. Not both.
Mistake #3: Using a full-jaw code for a limited scan.
If your scan only shows teeth #30 and #31, do not bill D0367. That is incorrect and looks like upcoding. Use D0388.
Mistake #4: Forgetting to document medical necessity.
Insurance companies want to know why a 3D scan was necessary instead of a regular X-ray. Write a short note in the patient’s record. For example: “Panoramic X-ray showed root overlapping inferior alveolar canal. CBCT needed to confirm nerve position before extraction.”
Mistake #5: Not separating the scan from the procedure.
The CBCT code is for the image only. If you then place an implant or extract a tooth, you bill those procedure codes separately. Do not bundle them.
How to Write a Simple Interpretation Report (For D0368)
If you choose to use D0368, you need a report. It does not have to be long or fancy. It just needs to exist.
Here is a template you can adapt.
Patient Name: [Name]
Date of Scan: [Date]
Type of Scan: Cone Beam CT, [one jaw / two jaws]Findings:
The scan reveals adequate bone height and width for implant placement at site #19. The inferior alveolar canal is clearly visible and lies approximately 4 mm below the proposed implant apex. No evidence of pathology or fracture.Impression:
Findings are consistent with normal anatomy. Site #19 is suitable for implant placement without need for nerve lateralization.Treating Dentist Signature: [Signature]
Save that report in the patient’s chart. Now you have proof of interpretation. That is all D0368 requires.
A Comparative Table of All Relevant Codes
Let us put everything side by side for easy reference.
| Code | Field of View | Interpretation | Typical Use Case | Relative Cost |
|---|---|---|---|---|
| D0388 | Limited (<1 jaw) | Not specified | Single tooth, small lesion, one implant site | Lower |
| D0367 | 1-2 jaws | Without formal report | General dentist scanning for surgical guide | Medium |
| D0368 | 1-2 jaws | With formal report | Specialist documenting for referral or legal record | Higher |
| D0391 | Any existing scan | Second opinion only | Outside expert reviewing another dentist’s scan | Varies |
Real-World Scenarios (With the Correct Code)
Let me walk you through five common situations. Read these carefully. They will answer most of your daily questions.
Scenario 1: The Implant Placement
Dr. Lee needs to place an implant at tooth #14. She takes a limited CBCT of only that area. She looks at the scan herself, sees enough bone, and places the implant. She does not write a separate report.
- Correct code: D0388
Scenario 2: The Impacted Wisdom Tooth
Dr. Patel has a patient with a lower wisdom tooth that looks very close to the nerve on a panoramic X-ray. Dr. Patel orders a full lower jaw CBCT. She studies the scan, notes the nerve position, and extracts the tooth. She writes “nerve visible 2 mm from root” in her procedure note but no separate report.
- Correct code: D0367
Scenario 3: The TMJ Case
Dr. Rivera suspects a patient has a displaced disc in the jaw joint. She orders a CBCT of both jaws, including the TMJs. She writes a one-page report describing the joint spaces and bone contours for the patient’s medical record.
- Correct code: D0368
Scenario 4: The Second Opinion
A general dentist emails Dr. Chen, an oral radiologist, a CBCT scan of a suspicious lesion. Dr. Chen reviews the scan and sends back a written report. Dr. Chen does not treat the patient.
- Correct code: D0391
Scenario 5: The Root Canal Confusion
An endodontist suspects a vertical root fracture on tooth #19. He takes a limited CBCT of that single tooth. He sees the fracture line clearly. He writes “fracture confirmed” in his chart note. No formal report is created.
- Correct code: D0388
Medical Cross-Coding: When to Use CPT Codes Instead
This section is important if you bill medical insurance. Dental codes (CDT) are for dental claims. Medical insurance uses a different set called CPT codes.
For CBCT scans, the most common medical code is 70450 (CT scan of the head or brain without contrast). But be very careful. That code is not identical to a dental CBCT. Some medical plans accept it. Some do not. Others want 76380 (CT scan, limited or localized).
Here is my advice. Do not guess. Call the medical insurance company before the scan. Ask them, “What CPT code do you want for a dental Cone Beam CT for [reason]?” Write down the answer, including the representative’s name and date.
If you bill the wrong medical code, the claim will be denied. Worse, it could be considered fraud if you repeatedly use incorrect codes. When in doubt, stick to dental codes and bill dental insurance first.
Documentation: Your Best Friend in an Audit
You can use the perfect code every time. But if you do not have good documentation, you will lose money during an audit.
Here is a checklist of what you need for every CBCT scan.
- A signed consent form that specifically mentions CBCT
- The reason the scan was needed (medical necessity)
- Why a regular X-ray was not enough
- The field of view (limited, one jaw, or two jaws)
- The date of the scan
- The name of the person who interpreted the scan
- A copy of the report if using D0368 or D0391
- The treatment plan that resulted from the scan
This sounds like a lot. But most of it takes less than two minutes to document. And it will save you hours of headache if an auditor asks questions.
How Much Should You Charge? (A Note on Fees)
I cannot give you a specific dollar amount because fees vary wildly by region, by insurance, and by office overhead. But I can give you realistic ranges based on national averages.
- D0388 (limited FOV): $150 – $350
- D0367 (1-2 jaws, no report): $250 – $500
- D0368 (1-2 jaws, with report): $300 – $650
These are the fees before insurance. Your contracted insurance rate will be lower, often 40% to 60% less. That is normal.
If you are a patient reading this, do not panic. Many offices offer payment plans or discounts for uninsured patients. Just ask.
The Future of CBCT Coding
The ADA updates CDT codes every year. Minor changes happen in even-numbered years. Major changes happen every five years or so.
What can we expect in the near future? Some experts predict a new code for “CBCT for orthodontic purposes only.” Others want a code that separates the scan of the airway from the scan of the teeth. As of 2026, neither exists yet.
For now, the codes above are your tools. They work. They are accepted nationwide. And they will likely remain stable for the next few years.
A Friendly Reminder About State Laws
A few states have specific laws about who can prescribe and interpret CBCT scans. For example, some states require that a dentist with special training in radiation physics order the scan. Other states allow any licensed dentist to do so.
Check your state dental board’s website. Look for rules about “cone beam computed tomography” or “3D imaging.” It takes ten minutes and could save you from a board complaint.
Summary Table: Quick Reference Card
Print this section or save it on your phone.
| If you need to… | Use this code |
|---|---|
| Scan a single tooth or small area | D0388 |
| Scan one or both jaws without a written report | D0367 |
| Scan one or both jaws and write a formal report | D0368 |
| Review someone else’s scan and write a report | D0391 |
Frequently Asked Questions (FAQ)
1. Can I bill both D0367 and a panoramic X-ray on the same day?
Yes, in most cases. A panoramic X-ray (D0330) and a CBCT are different images. If both were medically necessary, you can bill both. Just document why each was needed.
2. Does Medicaid cover CBCT?
It depends on your state. Some state Medicaid programs cover CBCT for surgical extractions and implants. Others never cover it. Call your state’s dental Medicaid office for a definite answer.
3. How often can I bill D0368 for the same patient?
There is no legal limit. However, insurance companies may deny repeat scans if they are too close together without a good reason. For example, one scan before implant placement and a second scan one year later for a different problem is fine. Two scans in one month for the same tooth would raise questions.
4. What is the difference between D0367 and D0388?
D0388 is for a limited field of view smaller than one jaw. D0367 is for one or two full jaws. Size matters.
5. Can a dental hygienist perform the CBCT scan?
Laws vary by state. Many states allow a trained, certified dental assistant or hygienist to operate the CBCT machine under the supervision of a dentist. The interpretation, however, must be done by a dentist.
6. What happens if I use the wrong code by accident?
If you realize the mistake before the claim is paid, submit a corrected claim. If the claim was already paid, you may need to refund the money and resubmit with the correct code. Honest mistakes are usually forgiven once or twice. Repeated errors look like a pattern.
7. Is there a code for a CBCT of only the sinuses?
Not specifically. Sinus imaging is usually included under D0367 or D0368 if the sinuses are within the scanned field. For medical billing, use the appropriate CPT code for a sinus CT.
Additional Resources
For the most current official CDT codes, always refer directly to the American Dental Association’s website.
🔗 Recommended link: ADA.org/en/publications/cdt – This is the official source for dental codes. Do not rely on third-party summaries for legal billing decisions.
Conclusion
Choosing the right dental code for Cone Beam CT comes down to three simple choices: limited area (D0388), full jaw without a report (D0367), or full jaw with a report (D0368). A fourth code (D0391) handles second opinions. Document your medical necessity, keep a simple report if needed, and always check with insurance before scanning. Master these codes, and you will save time, avoid denials, and get paid fairly for your 3D imaging work.
Disclaimer: This article is for informational purposes only and does not constitute legal, medical, or billing advice. Dental codes and insurance policies change. Always verify current codes with your local payer or coding consultant.
Author: Technical Dental Team
Date: APRIL 21, 2026
