Angioplasty and Stenting of Extra-Cranial and Intra-Cranial Arteries — CPB 0276 | AETNA Coverage Update

TL;DR: Aetna, a CVS Health company, modified CPB 0276 governing angioplasty and stenting of extra-cranial and intra-cranial arteries, effective February 27, 2026. Here's what billing teams need to do.

This update to the Aetna carotid artery stenting coverage policy touches 19 CPT codes and 11 HCPCS codes, including CPT 37215, 37216, 61630, 61635, 61640, 61641, and 61642. The changes clarify which stenosis thresholds and clinical presentations trigger medical necessity — and which indications Aetna now explicitly calls experimental. If your practice bills for carotid endarterectomy, intracranial angioplasty, or EC-IC bypass surgery, this policy affects your reimbursement.

Quick-Reference: CPB 0276 Aetna System Summary

Aetna Carotid Artery and Intracranial Angioplasty Coverage Criteria and Medical Necessity Requirements 2026

CPB 0276 sets the Aetna carotid artery stenting coverage policy for both extra-cranial and intra-cranial procedures. The structure is tighter than it looks. Aetna covers these procedures only when specific stenosis thresholds and symptom criteria are met — and the threshold differs depending on the artery and the procedure type.

Extra-cranial carotid arteries (CPT 37215, 37216, 37217, 37218, 0075T, 0076T): Percutaneous transluminal angioplasty with or without stent implantation and embolic protection is medically necessary for symptomatic patients with at least 50% stenosis. The patient must be symptomatic — asymptomatic patients at this threshold don't qualify for angioplasty. Carotid endarterectomy (CPT 35301) follows a different rule: Aetna covers it for symptomatic patients with stenosis greater than 50% OR asymptomatic patients with stenosis greater than 70%.

Extra-cranial vertebral arteries (CPT 0075T, 0076T): Angioplasty with or without stenting clears the medical necessity bar only when the patient has at least 50% stenosis AND remains symptomatic despite optimal medical treatment. "Optimal medical treatment" includes antithrombotic agents, statins, and other risk factor modifications. If your documentation doesn't show the patient failed medical therapy first, expect a claim denial.

Intracranial arteries (CPT 61640, 61641, 61642): Aetna covers balloon angioplasty here for one specific indication — medically refractory symptomatic delayed cerebral ischemia (cerebral vasospasm) after aneurysmal subarachnoid hemorrhage. That's a narrow window. Outside of that indication, intracranial angioplasty and stenting is experimental across the board.

The real issue is documentation specificity. Aetna's coverage policy requires you to match both the symptom status and the stenosis percentage to the correct artery and procedure code. A claim for CPT 37215 on an asymptomatic patient with 60% carotid stenosis will not survive review — carotid endarterectomy (CPT 35301) would be the covered option for that presentation, not stenting.

Prior authorization requirements are not explicitly detailed in this policy bulletin, but given the clinical complexity and the high rate of scrutiny on intracranial procedures, confirm prior auth requirements with Aetna directly before scheduling CPT 61630, 61635, or 61711 cases.

Aetna Angioplasty and Stenting Exclusions and Non-Covered Indications

Two categories of procedures draw explicit "experimental, investigational, or unproven" designations in this updated coverage policy. Both carry real claim denial risk if your team isn't tracking them.

Drug-eluting stents for extra-cranial artery stenosis — including carotid and vertebral arteries — are not covered. HCPCS codes C1874 and C1875 (coated/covered stents) are listed in the policy's related codes, but Aetna cross-references CPB 0621 (Drug-Eluting Stents) for the exclusion. If you're billing a covered angioplasty procedure alongside a drug-eluting stent, the stent device cost won't clear. Use non-coated stents (C1876, C1877) where applicable and document device selection.

Intracranial angioplasty and stenting for emergent large artery occlusion is explicitly experimental. This is the bigger financial exposure for stroke programs and neurointerventional teams. CPT 61630 and 61635 appear in the covered code list, but only when the specific vasospasm or aneurysm-related criteria above are met. Billing those codes for large artery occlusion in an emergent stroke setting will not meet medical necessity under this policy.

Prophylactic treatment of atherosclerotic stenosis of intracranial arteries is also off the table. CPT 61630 carries a direct note in the policy: "not covered for prophylaxis." If the clinical indication is preventive rather than treatment of active vasospasm, Aetna won't cover it.

EC-IC bypass surgery (CPT 61711, 35602) sits on the covered side, but only for four specific indications: intracranial aneurysms where parent artery occlusion is required, intracranial or transcranial carotid stenosis with documented flow-dependent ischemia, ischemic Moyamoya disease, or tumors invading major cerebral arteries. Outside those four, EC-IC bypass is not covered.

Coverage Indications at a Glance

Aetna Carotid Artery Stenting Billing Guidelines and Action Items 2026

These are the steps your billing team needs to take now. Don't wait until you have a denial in hand.

CPT, HCPCS, and ICD-10 Codes for Carotid and Intracranial Angioplasty Under CPB 0276

Covered CPT Codes (When Selection Criteria Are Met)

HCPCS Device Codes

Key ICD-10-CM Diagnosis Codes

The G45 codes above are listed in the source policy with the description "Transient cerebral ischemic attacks" for all five subcategories, per ICD-10 convention. The full ICD-10 code list under CPB 0276 includes 101 codes. The table above represents the primary diagnosis categories. Review the complete list at the Aetna CPB 0276 source document.