CPT 70330Radiology

X-ray exam of jaw joints

CPT 70330 covers X-ray imaging of the temporomandibular joints (TMJ), which are the jaw joints on either side of your face where your lower jaw connects to your skull. This imaging helps diagnose jaw pain, clicking, locking, or movement problems.

Showing rates for

National Average

Base Medicare rate

$51.43

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

0.24

PE RVU (NF)

1.33

MP RVU

0.02

Total RVU

1.59

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

NCCI bundling edits

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Billing tips

Verify ordering provider credentials before billing - Medicare may deny claims when ordered by dentists without physician co-signature or referral
Impact: Prevents 100% claim denial ($51.43 loss per claim) and reduces appeals workload by 30-40% for TMJ imaging
Document both open and closed mouth positions in the radiology report to justify the complete examination
Impact: Supports full reimbursement and reduces medical necessity denials by approximately 25% compared to single-position imaging
Link to specific ICD-10 diagnosis codes for TMJ disorders (M26.6x series) rather than generic facial pain codes
Impact: Increases first-pass approval rate by 15-20% and demonstrates clear medical necessity for the examination
Bill 70330 instead of dental X-ray codes (D-codes) when submitting to medical insurance for TMJ pathology
Impact: Ensures proper medical insurance reimbursement at $51.43 versus potential dental benefit limitations or denials
Do not append bilateral modifiers (50, RT/LT together) as the code describes examination of the joints (plural) and includes bilateral imaging by default
Impact: Prevents modifier-related denials and avoids triggering payer edits for inappropriate modifier use
Verify authorization requirements for commercial payers before performing the exam, as some plans require pre-authorization for TMJ imaging
Impact: Prevents authorization-related denials averaging 100% of the $51.43 fee and reduces patient balance issues

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 70330 in 2025?

Medicare pays $51.43 for CPT 70330 in 2025 (national average), with identical rates for both facility and non-facility settings. The total RVU is 1.59 multiplied by the 2025 conversion factor of 32.3465.

Does CPT 70330 include both TMJ joints or just one?

CPT 70330 typically includes imaging of both temporomandibular joints as the descriptor uses the plural 'joints.' Bilateral modifiers should not be appended. If only one joint is imaged due to clinical circumstances, document clearly and consider RT or LT modifiers per payer requirements.

Can a dentist order CPT 70330 for medical insurance billing?

While dentists can order TMJ X-rays, medical insurance billing for CPT 70330 typically requires physician involvement. Medicare and many commercial payers deny claims when dentists are the sole ordering providers. A physician should order the study or co-sign the dentist's order for medical billing purposes.

What diagnosis codes support medical necessity for CPT 70330?

Common supporting ICD-10 codes include M26.60-M26.69 (temporomandibular joint disorders), S03.4XXA (sprain of jaw), M25.571/M25.572 (pain in TMJ), R68.84 (jaw pain), and M19.01x (primary osteoarthritis of TMJ). Link the most specific code to the documented clinical presentation.

How is CPT 70330 different from a panoramic X-ray (70355)?

CPT 70330 is specific TMJ imaging with open and closed mouth views to assess joint function and movement. CPT 70355 is a panoramic view of the entire mandible and maxilla, primarily used for dental evaluation. Use 70330 when the clinical focus is TMJ pathology, not general jaw or dental assessment.

Do I need prior authorization for CPT 70330?

Medicare does not require prior authorization for 70330, but many commercial payers and Medicare Advantage plans do require authorization for TMJ imaging. Always verify payer-specific requirements before scheduling the exam to prevent authorization-related denials.

Can CPT 70330 be billed with modifier 26 or TC?

Yes, modifier 26 (professional component only) is used when billing only the physician interpretation, and modifier TC (technical component only) when billing only the imaging facility costs. When the same entity provides both components, bill 70330 without modifiers for the complete service at $51.43.