1. Evaluation & Management (E/M) Services

• 99242–99245: Office or outpatient consultations for new or established patients.

• 99252–99255: Inpatient or observation consultations.

• 99221–99223: Initial hospital care.

• 99231–99233: Subsequent hospital care.

• 99238–99239: Hospital discharge services.

• 99291–99292: Critical care services.Wikipedia

2. Craniectomy & Craniotomy Procedures

• 61304–61305: Exploratory craniectomy.

• 61500–61510: Craniectomy with excision of tumor or bone lesion.

• 61512–61514: Craniotomy for aneurysm clipping.

• 61580–61598: Skull base approaches.

• 61600–61619: Excision of vascular malformations.

3. Neurostimulator Procedures

• 61850–61860: Implantation of cortical electrodes.

• 61863–61864: Stereotactic implantation of subcortical electrodes.

• 61867–61868: Implantation with microelectrode recording.

• 61885–61888: Insertion or replacement of pulse generator.

• 61889–61892: Skull-mounted neurostimulator procedures.

4. Cerebrospinal Fluid (CSF) Shunt Procedures

• 62220–62223: Ventricular shunt procedures.

• 62230–62258: Revision or removal of shunt systems.

• 62263–62264: Lumbar puncture procedures.

• 62270–62272: Spinal tap procedures.

5. Diagnostic Imaging

• 70450–70470: CT scans of the head or brain.

• 70551–70553: MRI of the brain.

• 70554–70555: Functional MRI studies.

• 70557–70559: MRI with contrast.

• 77003: Fluoroscopic guidance for spinal procedures.

6. Neuroendoscopy Procedures

• 62160–62165: Intracranial neuroendoscopy procedures.

• 62180: Endoscopic third ventriculostomy.

• 62181: Endoscopic biopsy of brain lesion.

• 62182: Endoscopic removal of pituitary tumor.

• 62183: Endoscopic cyst fenestration.NeuroPace, Inc.

7. Spinal Procedures

• 63001–63030: Laminectomy and discectomy procedures.

• 63035: Additional levels for decompression.

• 63040–63047: Laminectomy for spinal stenosis.

• 63050–63051: Laminectomy with facetectomy.

• 63055–63057: Laminectomy with foraminotomy.

8. Skull Base Surgery

• 61580–61598: Approaches to skull base.

• 61600–61619: Excision of skull base lesions.

• 61680–61711: Surgery for aneurysm or vascular malformations.

• 61715–61791: Stereotactic procedures.

• 61796–61800: Stereotactic radiosurgery.

9. Peripheral Nerve Procedures

• 64721: Neuroplasty; median nerve at carpal tunnel.

• 64722–64727: Neuroplasty of other nerves.

• 64831–64837: Nerve repair procedures.

• 64905–64907: Nerve graft procedures.

• 64910–64911: Nerve transfer procedures.

10. Miscellaneous Procedures

• 12001–12007: Simple wound repair.

• 13100–13102: Complex wound repair.

• 20660: Application of cranial halo.

• 61781–61782: Stereotactic computer-assisted procedures.

• 77021–77022: MRI guidance for procedures.