CPT® Code 61253

The procedure described by CPT® Code 61253 involves the creation of one or more burr holes or the use of a trephine to access the infratentorial region of the brain. This region is located below the tentorium cerebelli, which is a membrane that separates the cerebellum from the cerebrum. The purpose of this procedure is to allow for exploration of the brain without the intention of performing definitive surgical interventions. During the procedure, the scalp is incised and flapped forward to expose the skull. A burr hole is then created using a surgical drill or perforator, or alternatively, a small disc of bone may be removed with a trephine. Following the creation of the burr hole, the dura mater, which is the protective covering of the brain, is incised to provide access to the underlying brain tissue. Any bleeding that occurs during the procedure is controlled using electrocautery. The exploration is conducted to assess any suspected defects or injuries in the infratentorial region. After the exploration is complete, the dura is closed, and the skull defect is repaired either by replacing the bone disc or applying bone wax to ensure proper closure. This procedure is specifically coded as 61253 when it involves unilateral or bilateral burr holes or trepanation for exploratory purposes in the infratentorial area of the brain.