CPT® Code 0190T

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The CPT® Code 0190T refers to the placement of an intraocular radiation source applicator, which is a specialized procedure performed in conjunction with a primary surgical intervention, such as vitrectomy. This procedure is specifically indicated for the treatment of choroidal neovascularization, a condition often associated with age-related macular degeneration. Choroidal neovascularization involves the abnormal growth of new blood vessels that develop at the site of a rupture in the Bruch membrane, which is a layer of tissue in the eye. These new blood vessels can invade the subretinal pigment epithelium or the subretinal space, leading to significant vision loss. During the procedure, a vitrectomy is first conducted to provide access to the vitreous cavity, allowing the surgeon to position the intraocular radiation source applicator accurately. The applicator, which contains a radiation source securely housed within a protective compartment, is inserted into the vitreous cavity and carefully positioned over the lesion. The radiation source is then advanced from its storage compartment into the cannula tip of the applicator, ensuring direct contact with the retina at the site of the neovascular lesion. This contact is maintained for a predetermined duration, typically not exceeding five minutes, to deliver the necessary radiation treatment. Once the prescribed time has elapsed, the radiation source is retracted back into the protective compartment of the applicator, which is subsequently removed from the eye. This procedure is critical for managing the complications associated with choroidal neovascularization and aims to preserve or improve vision in affected patients.