CPT 70300Radiology

X-ray exam of teeth

CPT code 70300 covers dental X-rays taken to examine teeth, roots, and surrounding bone structures. This is the basic radiographic imaging used to diagnose cavities, infections, impacted teeth, and other dental conditions.

Showing rates for

National Average

Base Medicare rate

$12.94

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

0.1

PE RVU (NF)

0.28

MP RVU

0.02

Total RVU

0.4

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Verify medical necessity and avoid routine dental exclusion - only bill to Medicare when dental X-rays are medically necessary (trauma, infection, jaw pathology), not for routine dental care
Impact: Prevents automatic denials and potential fraud allegations; routine dental is statutorily excluded from Medicare coverage
Link to appropriate ICD-10 codes demonstrating medical necessity such as S02.5 (fracture of tooth), K10.2 (inflammatory conditions of jaw), or M87.180 (osteonecrosis of jaw)
Impact: Increases clean claim rate by 60-70%; dental diagnosis codes alone may trigger automatic denial
Split billing between 26 and TC modifiers when interpretation and imaging occur at different locations to maximize compliant reimbursement
Impact: Ensures both facility and physician receive appropriate portions of the $12.94 total payment
Document number of views taken and anatomical areas covered; if multiple views or specialized imaging, consider higher-level dental radiography codes (70310, 70320, 70355)
Impact: Using appropriate code can increase reimbursement from $12.94 to $18-45 for more comprehensive studies
For hospital ED settings, ensure medical record clearly distinguishes this from dental panorex or specialized dental imaging to justify medical facility billing
Impact: Reduces audit risk and supports medical necessity versus routine dental care exclusion
Check payer-specific policies as many commercial insurers route dental X-rays to dental benefits even with medical diagnoses
Impact: Prevents payment delays and patient complaints; some payers never reimburse 70300 under medical benefits

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 70300 in 2025?

The 2025 Medicare national average reimbursement for CPT 70300 is $12.94 for both facility and non-facility settings. This rate is based on 0.4 total RVUs (0.1 work RVU, 0.28 practice expense RVU, 0.02 malpractice RVU) multiplied by the 2025 conversion factor of 32.3465.

Does Medicare cover CPT 70300 dental X-rays?

Medicare has very limited dental coverage. CPT 70300 is only covered when the dental X-ray is medically necessary for diagnosis or treatment of a non-dental medical condition, such as jaw fracture, osteonecrosis of the jaw, or odontogenic infection requiring hospitalization. Routine dental X-rays are statutorily excluded from Medicare benefits.

What is the difference between CPT 70300 and 70310?

CPT 70300 is a basic X-ray exam of teeth, while CPT 70310 represents radiologic examination of teeth with a complete full mouth series. Code 70310 involves more comprehensive imaging with multiple views and carries higher reimbursement, typically used for more extensive diagnostic evaluation.

Can dentists bill CPT 70300 to medical insurance?

Dentists can bill CPT 70300 to medical insurance only in limited circumstances where they are enrolled as medical providers and the service meets medical necessity criteria. However, many medical insurance plans will not reimburse dentists for this code and may route claims to dental benefits regardless of medical necessity. Hospital-based or physician-supervised settings have better success with medical billing.

What diagnosis codes support medical necessity for CPT 70300?

Appropriate ICD-10 codes include S02.5XX (fracture of tooth), K10.2 (inflammatory conditions of jaws), M87.180 (osteonecrosis of jaw), K04.7 (periapical abscess with sinus), S03.2XX (dislocation of tooth), and diagnosis codes related to facial trauma or jaw pathology. Routine dental codes like Z01.20 (encounter for dental examination) will typically result in denial.

How do I bill CPT 70300 with modifier 26 or TC?

Use modifier 26 when billing only the professional component (physician interpretation) if the technical component was performed elsewhere. Use modifier TC when billing only the technical component (equipment and technician) if interpretation is done by another provider. The $12.94 total payment is split between these components; both cannot be billed by the same provider on the same claim.

What are common denial reasons for CPT 70300?

The most common denials include: routine dental exclusion (service deemed not medically necessary), insufficient documentation of medical necessity, bundling with other procedures, non-covered provider type, and incorrect insurance filing (should have been submitted to dental plan instead of medical). Medical necessity documentation is critical to prevent denials.