Digital Subtraction Imaging - CDT Code Guide
Overview
CDT code D0394 refers to the digital subtraction of two or more images or image volumes of the same modality. This diagnostic procedure is used to highlight changes that have occurred over time by digitally subtracting images taken at different times. It is particularly useful in monitoring the progression of dental conditions, such as periodontal disease or bone loss, by comparing current images with previous ones to assess changes in the dental structures. This technique enhances the visibility of changes by removing static structures from the images, allowing dental professionals to focus on the areas of interest.
When to Use This Code
- Monitoring periodontal disease progression
- Assessing bone loss over time
- Evaluating changes in dental restorations
- Tracking the healing process post-surgery
- Comparing pre- and post-treatment images
Documentation Requirements
- Detailed patient history and clinical findings
- Date and time of each image acquisition
- Description of the imaging modality used
- Rationale for using digital subtraction
- Comparison results and clinical interpretation
- Patient consent for imaging procedures
Billing Considerations
When billing for D0394, ensure that the procedure is not performed more frequently than necessary, as excessive use may not be covered by insurance. Common modifiers may include those indicating the specific tooth or quadrant involved. Verify with the patient's insurance provider regarding coverage for diagnostic imaging procedures, as policies may vary.
Related CDT Codes
Frequently Asked Questions
Digital subtraction imaging is used to highlight changes in dental structures over time, such as bone loss or disease progression.
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