Motor Cortex Stimulation — CPB 0755 | AETNA Coverage Update

Quick-Reference Table

Aetna Motor Cortex Stimulation Coverage Criteria and Medical Necessity Requirements 2026

The short answer: there are no covered indications under this coverage policy. Aetna does not recognize medical necessity for motor cortex stimulation for any condition listed in CPB 0755. That's not a gray area — it's a flat denial position across every clinical scenario the policy addresses.

This matters for your prior authorization workflow. Even if a physician submits a strong clinical justification, Aetna won't approve motor cortex stimulation as medically necessary for any of the 16 conditions listed in this policy. Sending a prior auth request for CPT 61860 or 61885 for a patient with Parkinson's disease, chronic pain, or post-stroke hemiparesis is time you're spending on a guaranteed no.

The policy makes one additional exclusion explicit: Aetna also considers motor cortex stimulation experimental when used during implantation of a deep brain stimulator. This is an important carve-out. If your neurosurgeons perform both DBS implantation and motor cortex stimulation in the same surgical session, the MCS component will not generate reimbursement from Aetna regardless of how the claim is structured.

For DBS coverage itself, Aetna cross-references other policies. CPB 0755 does not govern DBS coverage — that's addressed elsewhere. But the explicit prohibition on MCS used during DBS implantation is worth flagging for your neurosurgery billing team specifically.

Aetna Motor Cortex Stimulation Exclusions and Non-Covered Indications

CPB 0755 lists 16 named conditions — and notes explicitly that the list is not all-inclusive. That last part deserves attention. Aetna isn't just denying the 16 conditions listed. Any indication not on this list doesn't get a pass — it falls into the same experimental bucket unless a separate policy covers it.

Here are the 16 named conditions Aetna classifies as not established for motor cortex stimulation:

The seizure/NeuroPace carve-out matters. If your practice bills responsive neurostimulation using CPT codes related to the NeuroPace RNS system, look at CPB 0394, not this policy. CPB 0755 doesn't govern that procedure.

The chronic pain bucket is wide. Central pain syndromes, CRPS, phantom limb pain — these are all explicitly listed. Pain management practices that have been exploring motor cortex stimulation for refractory patients should treat this as a hard stop on Aetna billing.

Coverage Indications at a Glance

Aetna Motor Cortex Stimulation Billing Guidelines and Action Items 2026

The effective date is February 25, 2026. Here's what your team does before and after that date.

CPT, HCPCS, and ICD-10 Codes for Motor Cortex Stimulation Under CPB 0755

Not Covered CPT Codes — All Indications Listed in CPB 0755

Not Covered HCPCS Codes — All Indications Listed in CPB 0755

Related HCPCS Code

Key ICD-10-CM Diagnosis Codes Under CPB 0755

This is a representative subset of the 237 ICD-10-CM codes listed in the policy. These diagnosis codes map to the non-covered indications.

The full ICD-10 code list under CPB 0755 includes 237 codes. If you need the complete list for your charge master or denial management workflow, access the full policy at PayerPolicy.org.