CPT® Code 70549

Magnetic resonance angiography (MRA) is a specialized imaging technique that utilizes magnetic fields and radiofrequency pulses to create detailed images of blood vessels in the neck. The procedure described by CPT® Code 70549 involves performing MRA without the use of contrast materials initially, followed by the administration of contrast materials to enhance the visibility of the vascular structures. This dual-phase approach allows for a comprehensive evaluation of both the arterial and venous systems, making it particularly useful in diagnosing various vascular conditions. MRA is a noninvasive procedure, meaning it does not require any surgical intervention, and is often employed to assess issues such as atherosclerotic stenosis, arterial dissection, acute thrombosis, aneurysms or pseudo-aneurysms, vascular loops, and vascular malformations or tumors. Additionally, it can help identify arterial causes of pulsatile tinnitus. The initial phase of the MRA captures images without contrast, which can provide baseline information about the vascular anatomy. Following this, contrast material is administered intravenously, allowing for enhanced imaging of the blood vessels. The resulting images are processed using advanced algorithms to create maximum intensity projections (MIPs), which highlight areas of interest for further analysis. The radiologist interprets these images, providing a detailed report of the findings, which is essential for guiding clinical decisions and treatment plans.