CPT® Code 0485T

Optical coherence tomography (OCT) is a sophisticated, non-invasive imaging technique that provides detailed microstructural and morphological insights into the middle ear. This procedure is particularly focused on the tympanic membrane, which is located at the end of the external ear canal, as well as the ossicular chain, which consists of three small bones known as the malleus, incus, and stapes. These ossicles play a crucial role in conducting sound vibrations from the outer ear to the inner ear. The OCT procedure is instrumental in assessing various conditions affecting the middle ear, including congenital anomalies, tumors, and traumatic injuries. By utilizing a probe that employs a split light beam, OCT captures high-resolution images by measuring the interference patterns of light that is scattered from the structures within the middle ear. This technique allows for the visualization of intricate details, including the sub-layers of the tympanic membrane, the ossicles, as well as associated nerves and tendons. The resulting images can be processed to create two-dimensional or three-dimensional cross-sectional views of the middle ear tissues and bony structures, facilitating accurate diagnosis and treatment planning. For coding purposes, the CPT® code 0485T is designated for unilateral OCT of the middle ear, while code 0486T is used for bilateral procedures, both of which include interpretation and reporting of the findings.