CPT® Code 61735

Creation of lesion by stereotactic method, including burr hole(s) and localizing and recording techniques, single or multiple stages; subcortical structure(s) other than globus pallidus or thalamus

The CPT® Code 61735 refers to the creation of a lesion using a stereotactic method, which involves precise localization and recording techniques, and may be performed in single or multiple stages. This procedure specifically targets subcortical structures of the brain, excluding the globus pallidus and thalamus. Subcortical structures are located beneath the cerebral cortex and include various components of the brain such as the limbic system, hypothalamus, midbrain, and hindbrain. The globus pallidus and thalamus, which are part of the basal ganglia, are not included in this procedure's scope. The creation of lesions in these subcortical areas is often part of psychosurgical interventions aimed at treating certain neurological or psychiatric conditions. The procedure is considered investigational or experimental by many insurance payers, which may affect coverage and reimbursement. During the procedure, a specialized frame is affixed to the patient's skull to ensure accuracy, and imaging techniques such as MRI or CT scans are utilized to map the brain and identify the precise location for lesion creation. This meticulous approach is essential for minimizing risks and maximizing the potential therapeutic benefits of the surgery.