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93970 CPT Code: Venous Duplex Scan (DVT) Rules

Last Updated: March 1, 2026

When evaluating a patient for a Deep Vein Thrombosis (DVT), a venous duplex scan is performed. CPT 93970 represents a complete bilateral study of the extremity veins.

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2026 Medicare National Fee (93970): Non-Facility (Office): $249.38 · Facility (Hospital): $249.38
✓ 2,503 Medicare-Approved ICD-10 Diagnoses on file for 93970:

Unilateral vs Bilateral Scans

  • 93970 (Complete): A full bilateral scan (both legs or both arms). Do not use Modifier 50.
  • 93971 (Limited): A unilateral scan (only one leg or arm) OR a limited bilateral scan.

Medical Necessity & ICD-10 Links

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Medicare requires clear signs and symptoms of DVT or venous insufficiency to justify the scan. Common approved codes include:

NCCI Edits

If the patient is coming in purely for the ultrasound (scheduled by another doctor), do not bill an E/M visit. If your physician evaluates the patient, orders the scan, and performs it all in the same visit, append Modifier 25 to the E/M.

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