CPT® Code 61619

Secondary repair of dura for cerebrospinal fluid leak, anterior, middle or posterior cranial fossa following surgery of the skull base; by local or regionalized vascularized pedicle flap or myocutaneous flap (including galea, temporalis, frontalis or occipitalis muscle)

The procedure described by CPT® Code 61619 involves a secondary repair of the dura mater, which is the outermost layer of the protective covering of the brain and spinal cord. This repair is specifically indicated for cases where there is a cerebrospinal fluid (CSF) leak from the anterior, middle, or posterior cranial fossa following surgical interventions on the skull base. Such leaks may occur when the initial closure of the dura fails, often as a result of previous surgeries aimed at tumor resection or the repair of vascular lesions. The secondary repair aims to restore the integrity of the dura to prevent further CSF leakage, which can lead to serious complications, including infection or neurological deficits. In this procedure, a local or regionalized vascularized pedicle flap or myocutaneous flap is utilized, which may involve muscle tissues such as the galea, temporalis, frontalis, or occipitalis. The use of these flaps is crucial as they provide a robust vascular supply to the graft, enhancing healing and reducing the risk of complications. The surgical technique involves careful trimming and placement of a graft, which can be harvested from various tissues or may include synthetic materials, ensuring a watertight closure to effectively manage the CSF leak. This detailed approach underscores the complexity and precision required in neurosurgical procedures aimed at addressing dural defects.