2025 CPT code 73706
(Active) Effective Date: N/A Radiology - Diagnostic Radiology (Diagnostic Imaging) Feed
Computed tomographic angiography (CTA) of the lower extremity, with contrast, including non-contrast images and post-processing.
Modifiers applicable: 26 (Professional Component), 50 (Bilateral Procedure), 51 (Multiple Procedures), 52 (Reduced Services), 53 (Discontinued Procedure), 59 (Distinct Procedural Service), 76 (Repeat Procedure or Service by Same Physician), 77 (Repeat Procedure by Another Physician), TC (Technical Component - institutional charge, not typically billed separately by physicians unless in limited scenarios), among others.
Medical necessity must be established for this procedure. It's indicated for evaluating conditions such as PAD, aneurysms, vascular malformations, and other vascular disorders where CTA imaging is necessary for diagnosis or treatment planning.
In simple words: This is a special type of CT scan of your leg that uses dye to create detailed pictures of the blood vessels. It helps doctors find problems like blockages, bulges, or injuries in the arteries and veins.
This procedure involves a CT scan of the lower extremity blood vessels using contrast material, often preceded by non-contrast images for comparison.It includes image post-processing to create detailed images of the arteries and veins.This helps diagnose conditions like aneurysms, blood clots, ischemia, and other vascular diseases.
Example 1: A patient presents with intermittent claudication (leg pain with exercise) and an abnormal ankle-brachial index (ABI). A lower extremity CTA (73706) is ordered to assess for peripheral arterial disease (PAD)., A patient with a history of femoral artery bypass surgery experiences recurrent symptoms. A lower extremity CTA (73706) is ordered to evaluate for graft stenosis or occlusion., A patient presents with a pulsatile mass in the popliteal fossa, raising suspicion for a popliteal artery aneurysm. A lower extremity CTA (73706) is performed to confirm the diagnosis and assess the aneurysm's size and characteristics.
Documentation should include the reason for the study, relevant history, physical exam findings, and interpretation of the CTA images. It must support medical necessity.
** As of December 1st, 2024, this information is current.However, coding guidelines and reimbursement policies can change, so it's crucial to verify the latest information with payers and coding resources.This information should not substitute professional medical or coding advice.
- Revenue Code: I2B - ADVANCED IMAGING - CAT: OTHER
- Modifier TC rule: Modifier TC is applicable for the technical component but is generally an institutional charge and not billed separately by physicians except for specific scenarios such as portable x-ray suppliers.
- Specialties:Radiology, Vascular Surgery, Interventional Radiology
- Place of Service:Inpatient Hospital, On Campus-Outpatient Hospital, Off Campus-Outpatient Hospital, Independent Clinic, Ambulatory Surgical Center, Mobile Unit, and other applicable place of service as determined by the procedure.