70390 X-ray examination of salivary duct
Also known as: sialadenography, sialography, salivary duct radiograph, sialogram
X-ray examination of the salivary duct system (ductal imaging) using iodinated contrast medium injected via the duct opening to visualize duct patency, strictures, stones, or structural abnormalities.
Clinical Context
Performed when sialoliths, ductal strictures, or chronic sialadenitis are suspected. Allows evaluation of duct obstruction, displacement, or pooling of contrast material. Largely superseded by MR sialography and ultrasound in modern practice.
RVU Breakdown
| Work RVU | 0.37 |
| Practice Expense RVU | 2.91 |
| Malpractice RVU | 0.03 |
| Total RVU | 3.31 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Specialties
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.