Medical Billing · Nationwide
Complex Skull Base Cerebrovascular Bypass & Microvascular EC-IC Anastomosis Medical Billing Services
Extracranial-to-intracranial (EC-IC) microvascular arterial bypass: superficial temporal artery to middle cerebral artery (STA-MCA 61711), high-flow saphenous vein or radial artery interposition grafting (35500/35600), complex giant unclippable cerebral aneurysm trapping (61697/61698), skull base orbitozygomatic craniotomy (61592), operating microscope microdissection (+69990), and intraoperative ICG videoangiography.
Aethera Healthcare Solutions provides full-service medical billing and revenue cycle management to cerebrovascular neurosurgeons, skull base surgical teams, microvascular neurosurgical specialists, and comprehensive stroke centers across the United States. We handle coding, claims, payment posting, denial management, and A/R follow-up end to end — so your team can stay focused on patient care while your revenue cycle runs cleanly.
Typical complex skull base cerebrovascular bypass & microvascular ec-ic anastomosis CPT range we work: 61711, 61697, 61698, 61700, 61702, 61592, 61600, 69990, 15756, 35500, 95940.
Why complex skull base cerebrovascular bypass & microvascular ec-ic anastomosis billing leaks revenue
Skull base craniotomy approach unbundling: Clearinghouses bundling orbitozygomatic or subtemporal approaches (61592/61600) into EC-IC bypass (61711)
Autologous graft harvest (saphenous vein 35500 / radial artery 35600) bundling: Commercial payers disallowing separate interposition vessel harvesting performed during high-flow bypass
Operating microscope (+69990) unbundling denials: Inappropriate denial of microvascular anastomosis magnification codes under outdated non-specific global bundling edits
Dual-surgeon co-management Modifier -62 rejections: Payment suspensions when vascular neurosurgery and skull base neurotology co-manage complex aneurysm bypass revascularizations
How Aethera fixes it
Specialty-trained coders (CPC/CCS) code to the documentation
First-pass claim scrubbing against payer and NCCI edits
Proactive denial prevention and 72-hour denial work
Relentless A/R follow-up to drive days-in-A/R down
Eligibility and prior-auth verification before service
Transparent, real-time reporting in the provider portal
Free tools for your billing team
Use these any time — no login required.
Complex Skull Base Cerebrovascular Bypass & Microvascular EC-IC Anastomosis billing FAQ
Is CPT 61711 billable with autologous interposition vein or arterial graft harvesting?
When performing a high-flow EC-IC bypass requiring a conduit graft from the cervical carotid to an intracranial target vessel (e.g. M2 MCA or basilar artery), the anastomosis is reported using CPT 61711. The harvesting of the autologous vein graft is separately reportable using CPT +35500 (harvest of saphenous vein graft) or CPT 35600 for radial artery harvest, as these procedures involve a distinct anatomical incision and prep site.
Can the operating microscope (+69990) be billed with EC-IC microvascular bypass (61711)?
Yes. Under CMS NCCI Chapter VIII guidelines, CPT 61711 does not intrinsically include the operating microscope. Operating microscope add-on code +69990 is fully reimbursable when microvascular suturing of donor-to-recipient vessels (such as 1mm STA branch to cortical M4 vessel with 10-0 nylon) is documented in the operative narrative.