CPT® Code 93982

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Noninvasive physiologic study of implanted wireless pressure sensor in aneurysmal sac following endovascular repair, complete study including recording, analysis of pressure and waveform tracings, interpretation and report

A noninvasive physiologic study, as described by CPT® Code 93982, involves the assessment of a wireless pressure sensor that has been previously implanted in an aneurysmal sac during an endovascular repair procedure. This study is crucial for monitoring the condition of the abdominal aortic aneurysm (AAA) post-repair. The procedure is designed to be performed at regular intervals, either yearly or semi-annually, to detect any potential complications that may arise, such as repressurization of the aneurysm or the occurrence of an endoleak. The wireless sensor, which is approximately the size of a grain of rice, is engineered to measure critical parameters including pressure, flow, and temperature within the aneurysmal sac. This advanced device utilizes acoustic wave technology, allowing it to transmit data effectively through various tissues, including soft tissue, bone, and fluid, without being absorbed. Its design requires minimal energy, ensuring a high signal-to-noise ratio, which is essential for accurate readings from deep anatomical locations. Notably, the sensor operates without a battery, antenna, or connecting leads, enhancing its reliability and ease of use. An external unit is employed to power the implant and to receive data directly from it. During the study, a trained technologist collects the data from the sensor, which is subsequently analyzed by a physician. This analysis includes reviewing waveform tracings generated by the sensor and measuring the pressure within the aneurysm sac from various positions using the external unit. The physician compares these readings for pulsatility and evaluates them against data from previous studies, including presurgical assessments and immediate post-operative evaluations. Any significant changes in the raw pressure measurements, which are normalized to the brachial systolic pressure, are meticulously documented. The findings are compiled into a comprehensive report, which includes identified waveforms and pressure measurements that are critical for ongoing patient management and care.