CPT 61611 Reimbursement & Benchmarks | OpenPayer

Summary & Overview

CPT 61611: Transection/Ligation of Carotid Artery in Petrous Canal

CPT code 61611 is an add-on neurosurgical procedure code for transection or ligation of the carotid artery in the petrous canal when performed during removal of an extradural or intradural lesion. It is reported only in conjunction with primary cranial approach codes 61605–61608 and does not include carotid artery repair. Nationally, this code captures a high-complexity intraoperative vascular maneuver that typically occurs in tertiary care or specialized neurosurgical centers and can affect resource use, operative planning, and documentation requirements.

Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for using the code, common settings where the procedure is performed, and the role of the code as an add-on to primary cranial procedure codes. The publication summarizes benchmarking considerations, coding and billing implications for hospitals and neurosurgery practices, and areas where policy updates or payer-specific adjudication rules may influence reimbursement. Data not available in the input is noted where applicable, and the content focuses on national-level implications rather than state-specific guidance.

AetnaBlue Cross Blue ShieldCignaUnitedHealthcareMedicareCPT 61611neurosurgeryadd-on codecarotid arterypetrous canaloperative procedurecranial lesion resectionsurgical coding

Billing Code Overview

CPT code 61611 is an add-on surgical code used to report transection or ligation of the carotid artery in the petrous canal when performed during removal of an extradural or intradural lesion. The code applies only in addition to primary codes 61605 through 61608 and specifically excludes any repair of the carotid artery.

Service type: Operative neurosurgical procedure for vascular control during cranial tumor or lesion resection
Typical site of service: Inpatient or outpatient hospital operating room during cranial neurosurgical procedures

Clinical & Coding Specifications

Clinical Context

A 58-year-old male presents with progressive cranial neuropathy and imaging that demonstrates an extradural petrous apex tumor encasing the internal carotid artery within the petrous canal. After multidisciplinary review, the neurosurgical team schedules a skull base resection. During dissection, the tumor cannot be separated safely from the carotid in the petrous segment, and the surgeon performs transection/ligation of the carotid artery in the petrous canal to achieve gross total resection of the lesion. The procedure does not include arterial repair. The clinical workflow includes preoperative vascular imaging (CT angiography or digital subtraction angiography), anesthesia evaluation, intraoperative neurophysiologic monitoring, cranial base exposure, tumor resection with carotid control and ligation using 61611 reported in addition to the primary skull base resection code (such as 61605–61608). Postoperative care involves neurologic monitoring in a high-acuity unit, ischemic stroke surveillance, and rehabilitation as needed.

Coding Specifications

Modifier	Description	When to Use
`62`	Two surgeons	Use when two surgeons of different specialties operate together for a complex skull base resection requiring carotid ligation.

CPT 61613: Middle Cranial Fossa Excision of Cavernous Sinus Vascular Lesion

CPT-61606-MIDDLE-CRANIAL-FOSSA-INTRADURAL-LESION-EXCISION

CPT 61606: Excision of Intradural Lesion at Middle Cranial Fossa Base

CPT-61608-SKULL-BASE-INTRADURAL-NEOPLASM-RESECTION

CPT 61608: Intradural Resection of Skull Base Neoplasm

CPT-61607-EXTRADURAL-SKULL-BASE-NEOPLASM-RESECTION

CPT 61607: Extradural Skull Base Neoplasm Resection

CPT-61605-EXTRADURAL-MIDDLE-CRANIAL-FOSSA-NEOPLASM-RESECTION

CPT 61605: Extradural Middle Cranial Fossa Neoplasm Resection

Taxonomy Code	Specialty	Notes
2084S0004X	Neurological Surgery	Primary specialty performing skull base tumor resections with carotid ligation.
208400000X	Otolaryngology (ENT)	Skull base otolaryngologists may perform or co-manage petrous apex approaches.
207RH0000X	Vascular Surgery	Consulted when carotid control, vessel ligation, or complex vascular planning is required.
207L00000X	Interventional Radiology	Performs preoperative angiography and possible endovascular testing (balloon occlusion testing) or adjunctive procedures.
2085R0202X	Neurology	Provides perioperative stroke risk assessment and postoperative neurologic management.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C41.2`	Malignant neoplasm of bones of skull and face	Primary skull base tumors or metastatic lesions involving the petrous bone that may require resection with carotid control.
`C71.8`	Malignant neoplasm of brain, unspecified parts of brain	Intradural lesions near the petrous carotid that may necessitate aggressive resection including carotid ligation.
`D32.0`	Benign neoplasm of cerebral meninges	Extra-axial meningeal lesions invading skull base structures potentially requiring transection of the carotid in the petrous canal.
`D33.4`	Benign neoplasm of spinal cord and cauda equina	(Less commonly related) intracranial benign neoplasms adjacent to skull base structures.
`I72.9`	Artery aneurysm, unspecified	Petrous carotid aneurysms not amenable to repair may be treated with ligation in selected cases.
`G93.1`	Anoxic brain damage, not elsewhere classified	Postoperative complication risk warranting monitoring; not a direct indication but relevant to perioperative documentation.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`61605`	Transpetrosal approach for resection or exposure of a lesion of skull base (e.g., extradural petrous apex)	Common primary approach code for skull base lesion resection; `61611` is reported in addition when carotid transection/ligation in the petrous canal is performed.
`61606`	Extended transpetrosal approach for resection of skull base lesion	Alternative primary approach for larger lesions; `61611` appended if carotid transection/ligation occurs during this procedure.
`61607`	Posterior fossa or petroclival lesion resection approach	May be used for lesions requiring posterior fossa exposure; `61611` is an add-on when carotid is transected/ligated.
`61608`	Combined intracranial and extracranial approaches for skull base lesions	Used for complex combined approaches; `61611` is reported in addition when carotid transection/ligation in the petrous canal is performed.
`61611`	Transection or ligation of the carotid artery in the petrous canal (add-on)	This add-on code is reported in conjunction with the primary skull base resection codes (`61605`–`61608`) to document carotid transection/ligation; it does not include arterial repair.

Note: These codes are used together in the operative claim to convey the primary approach plus the additional work of carotid transection/ligation.

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