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| 00800ZZ | Division of Brain, Open Approach |
| 00803ZZ | Division of Brain, Percutaneous Approach |
| 00804ZZ | Division of Brain, Percutaneous Endoscopic Approach |
| 00870ZZ | Division of Cerebral Hemisphere, Open Approach |
| 00873ZZ | Division of Cerebral Hemisphere, Percutaneous Approach |
| 00874ZZ | Division of Cerebral Hemisphere, Percutaneous Endoscopic Approach |
| 00880ZZ | Division of Basal Ganglia, Open Approach |
| 00883ZZ | Division of Basal Ganglia, Percutaneous Approach |
| 00884ZZ | Division of Basal Ganglia, Percutaneous Endoscopic Approach |
| 008F0ZZ | Division of Olfactory Nerve, Open Approach |
| 008F3ZZ | Division of Olfactory Nerve, Percutaneous Approach |
| 008F4ZZ | Division of Olfactory Nerve, Percutaneous Endoscopic Approach |
| 008G0ZZ | Division of Optic Nerve, Open Approach |
| 008G3ZZ | Division of Optic Nerve, Percutaneous Approach |
| 008G4ZZ | Division of Optic Nerve, Percutaneous Endoscopic Approach |
| 008H0ZZ | Division of Oculomotor Nerve, Open Approach |
| 008H3ZZ | Division of Oculomotor Nerve, Percutaneous Approach |
| 008H4ZZ | Division of Oculomotor Nerve, Percutaneous Endoscopic Approach |
| 008J0ZZ | Division of Trochlear Nerve, Open Approach |
| 008J3ZZ | Division of Trochlear Nerve, Percutaneous Approach |
| 008J4ZZ | Division of Trochlear Nerve, Percutaneous Endoscopic Approach |
| 008K0ZZ | Division of Trigeminal Nerve, Open Approach |
| 008K3ZZ | Division of Trigeminal Nerve, Percutaneous Approach |
| 008K4ZZ | Division of Trigeminal Nerve, Percutaneous Endoscopic Approach |
| 008L0ZZ | Division of Abducens Nerve, Open Approach |
| 008L3ZZ | Division of Abducens Nerve, Percutaneous Approach |
| 008L4ZZ | Division of Abducens Nerve, Percutaneous Endoscopic Approach |
| 008M0ZZ | Division of Facial Nerve, Open Approach |
| 008M3ZZ | Division of Facial Nerve, Percutaneous Approach |
| 008M4ZZ | Division of Facial Nerve, Percutaneous Endoscopic Approach |
| 008N0ZZ | Division of Acoustic Nerve, Open Approach |
| 008N3ZZ | Division of Acoustic Nerve, Percutaneous Approach |
| 008N4ZZ | Division of Acoustic Nerve, Percutaneous Endoscopic Approach |
| 008P0ZZ | Division of Glossopharyngeal Nerve, Open Approach |
| 008P3ZZ | Division of Glossopharyngeal Nerve, Percutaneous Approach |
| 008P4ZZ | Division of Glossopharyngeal Nerve, Percutaneous Endoscopic Approach |
| 008Q0ZZ | Division of Vagus Nerve, Open Approach |
| 008Q3ZZ | Division of Vagus Nerve, Percutaneous Approach |
| 008Q4ZZ | Division of Vagus Nerve, Percutaneous Endoscopic Approach |
| 008R0ZZ | Division of Accessory Nerve, Open Approach |
| 008R3ZZ | Division of Accessory Nerve, Percutaneous Approach |
| 008R4ZZ | Division of Accessory Nerve, Percutaneous Endoscopic Approach |
| 008S0ZZ | Division of Hypoglossal Nerve, Open Approach |
| 008S3ZZ | Division of Hypoglossal Nerve, Percutaneous Approach |
| 008S4ZZ | Division of Hypoglossal Nerve, Percutaneous Endoscopic Approach |
| 008W0ZZ | Division of Cervical Spinal Cord, Open Approach |
| 008W3ZZ | Division of Cervical Spinal Cord, Percutaneous Approach |
| 008W4ZZ | Division of Cervical Spinal Cord, Percutaneous Endoscopic Approach |
| 008X0ZZ | Division of Thoracic Spinal Cord, Open Approach |
| 008X3ZZ | Division of Thoracic Spinal Cord, Percutaneous Approach |
| 008X4ZZ | Division of Thoracic Spinal Cord, Percutaneous Endoscopic Approach |
| 008Y0ZZ | Division of Lumbar Spinal Cord, Open Approach |
| 008Y3ZZ | Division of Lumbar Spinal Cord, Percutaneous Approach |
| 008Y4ZZ | Division of Lumbar Spinal Cord, Percutaneous Endoscopic Approach |