CPT 70332Radiology

X-ray exam of jaw joint

CPT code 70332 covers X-ray imaging of the temporomandibular joint (TMJ), commonly called the jaw joint, which connects your lower jaw to your skull. This diagnostic test helps identify problems with jaw alignment, arthritis, or injury.

Showing rates for

National Average

Base Medicare rate

$78.93

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

0.54

PE RVU (NF)

1.86

MP RVU

0.04

Total RVU

2.44

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

NCCI bundling edits

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Billing tips

Verify whether bilateral TMJ imaging is included in the base code or requires modifier 50 for your specific payer, as policies vary significantly
Impact: Proper bilateral coding can increase reimbursement by up to $78.93 (150% total) versus single payment if incorrectly coded
Split bill with modifier 26 and TC when professional and technical services are provided by different entities to ensure both components are reimbursed
Impact: Prevents revenue loss of approximately $31-39 for either component when services are divided between facilities
Always append RT or LT modifiers when only one TMJ is imaged, as many payers now require laterality modifiers for paired anatomical structures
Impact: Prevents automatic denials and reduces claims processing time by 7-14 days on average
Document the number of views obtained (minimum typically 2-3 views) and specific clinical indication in the radiology report to support medical necessity
Impact: Reduces denial rate by approximately 15-20% and strengthens appeal position if questioned
Do not bill 70332 on the same day as panoramic dental X-rays (70355) without clear documentation of separate medical necessity, as bundling edits may apply
Impact: Prevents denials and potential recoupment of $78.93 for unbundling violations
Verify patient's insurance coverage for TMJ imaging prior to service, as some dental plans cover this while others require medical insurance
Impact: Reduces patient balance issues and improves collections by 25-30% through proper primary payer identification

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Frequently asked questions

What is the Medicare reimbursement rate for CPT code 70332 in 2025?

The 2025 Medicare national average reimbursement rate for CPT 70332 is $78.93 for both facility and non-facility settings. This is based on a total RVU of 2.44 multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary by geographic locality and MAC jurisdiction.

Does CPT 70332 include bilateral TMJ imaging or do I need modifier 50?

CPT 70332 does not specify unilateral or bilateral in its descriptor, which creates payer-specific variation. Most Medicare contractors and commercial payers consider 70332 to include bilateral TMJ imaging when both joints are examined. However, if only one TMJ is imaged, append RT or LT modifier. Always verify specific payer policy as some may require modifier 50 for bilateral studies.

Can CPT 70332 be billed by dentists or only by medical physicians?

CPT 70332 can be billed by both dentists and medical physicians, depending on state scope of practice laws and insurance coverage. Dentists with appropriate radiographic equipment and training may perform and bill TMJ X-rays. However, reimbursement depends on whether the service falls under the patient's medical or dental insurance plan. Medical plans typically cover TMJ imaging when ordered for medical conditions, while dental plans may cover it for treatment planning.

What diagnosis codes support medical necessity for CPT 70332?

Common supporting ICD-10 codes include M26.60-M26.69 (temporomandibular joint disorders), M25.571-M25.572 (TMJ pain), S03.4XXA (sprain of jaw), M19.071-M19.072 (primary osteoarthritis of TMJ), R51.9 (headache when TMJ-related), and K07.6 (TMJ disorders). Documentation must clearly link the diagnosis to clinical symptoms and explain how imaging will guide treatment decisions.

What is the difference between CPT 70332 and 70336 for TMJ imaging?

CPT 70332 is a standard X-ray examination of the TMJ using plain radiography, while CPT 70336 represents a magnetic resonance imaging (MRI) study of the TMJ. The MRI (70336) provides superior soft tissue visualization including the articular disc, muscles, and joint effusion, and reimburses at a significantly higher rate. 70332 is appropriate for initial evaluation of bony structures, while 70336 is typically used for complex TMJ disorders requiring detailed soft tissue assessment.

How many views are required to bill CPT 70332?

CPT 70332 does not specify a minimum number of views, but standard practice typically includes at least 2-3 views of the TMJ in different positions (usually open-mouth and closed-mouth views). Documentation should specify the number of views obtained. Single-view imaging may be questioned for medical necessity. The number of views should be determined by clinical indication and standard radiographic protocols for TMJ evaluation.

Can CPT 70332 be billed with a panoramic X-ray (70355) on the same day?

CPT 70332 and 70355 can be billed together if there is distinct medical necessity for each study and they serve different diagnostic purposes. However, many payers have bundling edits because panoramic X-rays include some TMJ visualization. Append modifier 59 or XU to 70332 if billing both codes, and document why dedicated TMJ views were medically necessary beyond the panoramic study. Without clear separate documentation, expect potential denials for duplication of service.