| ICD Code | Description |
|---|---|
| 00Q0 | Brain |
| 00Q1 | Cerebral Meninges |
| 00Q2 | Dura Mater |
| 00Q6 | Cerebral Ventricle |
| 00Q7 | Cerebral Hemisphere |
| 00Q8 | Basal Ganglia |
| 00Q9 | Thalamus |
| 00QA | Hypothalamus |
| 00QB | Pons |
| 00QC | Cerebellum |
| 00QD | Medulla Oblongata |
| 00QF | Olfactory Nerve |
| 00QG | Optic Nerve |
| 00QH | Oculomotor Nerve |
| 00QJ | Trochlear Nerve |
| 00QK | Trigeminal Nerve |
| 00QL | Abducens Nerve |
| 00QM | Facial Nerve |
| 00QN | Acoustic Nerve |
| 00QP | Glossopharyngeal Nerve |
| 00QQ | Vagus Nerve |
| 00QR | Accessory Nerve |
| 00QS | Hypoglossal Nerve |
| 00QT | Spinal Meninges |
| 00QW | Cervical Spinal Cord |
| 00QX | Thoracic Spinal Cord |
| 00QY | Lumbar Spinal Cord |