CDT Code D0370: Maxillofacial Ultrasound Analysis

What Is D0370? (CDT Code Overview)

CDT code D0370 — Maxillofacial Ultrasound Analysis — falls under the Diagnostic category of CDT codes, specifically within the Diagnostic Imaging (3D/Advanced) subcategory. Understanding when and how to use this code is essential for accurate billing, clean claim submission, and optimal reimbursement at your dental practice.

When Should You Use D0370?

The D0370 dental code is specifically allocated for obtaining and analyzing ultrasound images of the maxillofacial area. This CDT code is appropriate when dental professionals utilize ultrasound technology to examine soft tissues in the maxillofacial region, including situations involving cysts, growths, salivary gland issues, or injury assessment. This code is not intended for standard imaging procedures and should only be applied when clinical circumstances specifically require ultrasound examination for diagnostic purposes. Appropriate application of D0370 helps ensure precise documentation and validates the clinical need for specialized imaging techniques in dental practice.

Quick reference: Use D0370 when the clinical scenario specifically matches maxillofacial ultrasound analysis. Do not use this code as a substitute for related procedures in the same category. Consider whether D0310 (Sialography Explained) or D0320 (TMJ Arthrogram with Injection) might be more appropriate instead.

D0370 vs. Similar CDT Codes: Key Differences

Dental teams frequently confuse D0370 with other codes in the diagnostic imaging (3d/advanced) range. Here is how D0370 differs from the most commonly mixed-up codes:

• D0310: Sialography Explained — While D0310 covers sialography, D0370 is specifically designated for maxillofacial ultrasound analysis. Selecting the wrong code can trigger claim denials or audits, so always verify the clinical scenario matches the code definition before submitting.

• D0320: TMJ Arthrogram with Injection — While D0320 covers tmj arthrogram with injection, D0370 is specifically designated for maxillofacial ultrasound analysis. Selecting the wrong code can trigger claim denials or audits, so always verify the clinical scenario matches the code definition before submitting.

• D0321: TMJ X-Ray Imaging Explained — While D0321 covers tmj x-ray imaging, D0370 is specifically designated for maxillofacial ultrasound analysis. Selecting the wrong code can trigger claim denials or audits, so always verify the clinical scenario matches the code definition before submitting.

Documentation Requirements for D0370

Thorough record keeping is essential when utilizing D0370 for billing purposes. Healthcare provider documentation must explicitly detail the ultrasound rationale, examined anatomical structures, discovered findings, and result analysis. Typical patient scenarios involve investigating possible salivary gland obstructions, soft tissue abnormalities, or unexplained facial inflammation. For instance, when a patient experiences ongoing submandibular swelling and conventional X-rays prove inadequate, maxillofacial ultrasound imaging may be necessary to examine soft tissue conditions more thoroughly. Documentation must consistently demonstrate procedural necessity and correspond with claim narrative information.

Documentation checklist for D0370:

• Patient chief complaint and relevant medical/dental history clearly recorded.

• Clinical findings that support the use of D0370 specifically (not a more general or more specific code).

• Any diagnostic tests, imaging, or supplementary data that justify the procedure.

• Treatment plan with rationale connecting the diagnosis to the procedure coded as D0370.

• Post-procedure notes, including outcomes and follow-up recommendations.

Insurance and Billing Guide for D0370

When processing D0370 claims, confirm whether the patient's dental or medical coverage includes specialized imaging services. Various insurance plans may demand prior approval or supplementary documentation, including treatment notes and ultrasound findings. Include all relevant supporting materials with your claim submission and employ accurate coding practices to prevent rejections. Should claims be denied, examine the Explanation of Benefits for specific reasons and prepare appeal submissions with comprehensive documentation. Effective dental practices develop imaging claim protocols that encompass insurance confirmation, prior authorization procedures when required, and complete documentation to facilitate payment processing and reduce outstanding receivables.

Common denial reasons for D0370: Lack of clinical documentation, frequency limitations exceeded, code mismatch with diagnosis, or missing prior authorization. When appealing a denied D0370 claim, include a detailed narrative explaining why the procedure was necessary, supporting clinical evidence, and relevant imaging or test results. Many practices find that well-documented first submissions dramatically reduce the need for appeals.

To improve your overall claims workflow, explore Dental Insurance Verification Checklist.

Real-World Case Example: Billing D0370

A patient presents with unexplained facial inflammation and pain. Following initial assessment and routine imaging, the dental provider suspects soft tissue abnormalities not detectable through conventional radiography. The practitioner conducts maxillofacial ultrasound imaging, capturing and evaluating the results to discover a harmless cyst within the parotid area. Documentation includes patient complaint details, ultrasound justification, discoveries, and professional interpretation. The practice processes the claim using D0370, includes the ultrasound documentation, and provides explanatory notes regarding medical necessity. The successful claim approval highlights the significance of accurate coding practices, proper documentation, and effective billing procedures.

Related CDT Codes to D0370

If you are researching D0370, you may also need to reference these related CDT codes in the diagnostic imaging (3d/advanced) range and beyond:

• D0120: Routine Oral Exam — Learn when to use D0120 and how it differs from D0370.

• D0140: Limited Oral Exam Guide — Learn when to use D0140 and how it differs from D0370.

• D0210: Intraoral X-rays — Learn when to use D0210 and how it differs from D0370.

• D0220: Intraoral Periapical X-rays — Learn when to use D0220 and how it differs from D0370.

• D0310: Sialography Explained — Learn when to use D0310 and how it differs from D0370.

Frequently Asked Questions About D0370

Can D0370 dental code be billed to both medical and dental insurance?

Yes, the D0370 code may be eligible for billing to both dental and medical insurance plans, though this depends on the specific clinical circumstances and the patient's insurance coverage. Because maxillofacial ultrasound is considered a diagnostic medical procedure, certain medical insurance providers may provide coverage when the procedure is medically necessary and accompanied by proper documentation. It's essential to confirm coverage with the individual insurance provider and secure any necessary preauthorization prior to performing the procedure.

Are dental hygienists or dental assistants permitted to perform and bill D0370?

No, billing for D0370 is only appropriate when a licensed dentist or oral surgeon performs both the ultrasound capture and interpretation. Dental hygienists and dental assistants typically do not have the authorization to perform or interpret maxillofacial ultrasounds for D0370 billing purposes. It's important to adhere to state regulations and scope of practice requirements at all times. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D0370 will strengthen your position in any audit or appeal scenario.

What are the most frequent causes of D0370 claim denials?

Frequent causes of claim denials include inadequate documentation, inability to establish medical necessity, missing preauthorization when it's required, or billing the code when only the capture or interpretation component was completed rather than both. To prevent denials, maintain thorough clinical documentation, submit all required supporting materials, and confirm payer requirements prior to submitting claims. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D0370 will strengthen your position in any audit or appeal scenario.

What is the typical reimbursement range for D0370?

Reimbursement for D0370 (maxillofacial ultrasound analysis) varies based on geographic location, payer contract terms, and whether the patient has in-network or out-of-network coverage. Fee schedules are typically set by individual insurance carriers, so practices should verify expected reimbursement during benefits verification. If your practice consistently receives lower-than-expected payments for D0370, consider renegotiating your fee schedule with major payers or reviewing your UCR (Usual, Customary, and Reasonable) data for your region.

Does D0370 require prior authorization?

Prior authorization requirements for D0370 depend on the patient's specific insurance plan. Some carriers require advance approval for procedures coded under D0370, while others process claims without it. Best practice is to verify authorization requirements during insurance eligibility checks before the appointment. If prior authorization is required, submit the request with detailed clinical notes and supporting documentation to avoid delays in patient care and claim processing.