In simple words: This is an ultrasound test that measures the thickness of the walls of your carotid arteries in your neck. It helps doctors check for plaque buildup, which can increase your risk of stroke.

This code describes a procedure where ultrasound is used to measure the thickness of the inner two layers (intima and media) of the carotid arteries on both sides of the neck. This measurement helps evaluate the presence and extent of atherosclerosis, a condition where plaque builds up inside the arteries.

Example 1: A patient with risk factors for stroke, such as high blood pressure and high cholesterol, undergoes this test to assess their carotid artery health., A patient with a family history of carotid artery disease has this test done as a preventative measure., A patient who has experienced symptoms suggestive of carotid artery stenosis, like temporary vision loss or weakness on one side of the body, undergoes this test to aid in diagnosis.

Documentation should include the medical necessity for the procedure, such as patient's risk factors or symptoms. The report should detail the measurements taken, including mean and maximal IMT values, and the presence or absence of plaque.

** While this test is useful for assessing subclinical atherosclerosis, its use as a general screening tool for asymptomatic individuals is not universally accepted. As of December 1st, 2024, Medicare does not cover this code for screening purposes.