CPT® Code 61305

An exploratory infratentorial craniectomy or craniotomy is a surgical procedure performed to investigate potential abnormalities in the cerebellar region of the brain, which is located below the tentorium cerebelli. This area is critical for various functions, including coordination and balance. The procedure involves creating access to the brain by making incisions in the scalp and raising flaps of skin and bone. A craniectomy entails the removal of a bone flap, while a craniotomy involves temporarily lifting the bone flap to expose the underlying brain tissue. The primary goal of this exploratory surgery is to assess the condition of the brain without performing any definitive surgical intervention. During the procedure, the surgeon carefully examines the brain for any defects or injuries, documenting any abnormalities found. After the exploration, the dural flap is meticulously closed to prevent cerebrospinal fluid leakage, and the bone flap is either reattached or managed with materials such as bone wax or silicone to ensure proper healing. This procedure is essential for diagnosing conditions that may not be visible through non-invasive imaging techniques.