CPT 61651 Intracranial Catheter Reimbursement | OpenPayer

Summary & Overview

CPT 61651: Intracranial Endovascular Catheter Placement, Additional Artery

CPT code 61651 covers image-guided placement of an endovascular catheter into an additional intracranial artery for long-term administration of a non-thrombolytic drug, performed with contrast-enhanced diagnostic angiography. This code matters nationally because intracranial drug-delivery procedures are specialized, resource-intensive interventions with implications for facility scheduling, interventional neuroradiology capacity, and payer coverage policies. Accurate reporting of 61651 affects clinical documentation, billing specificity, and aggregate utilization measures for complex neurointerventional services.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical service and typical sites of care, common modifier usage noted in payer policies, and expectations for reporting when multiple intracranial arteries are accessed. The publication summarizes benchmarks and policy context relevant to hospitals and physician groups that provide advanced neurointerventional procedures, and it highlights how 61651 integrates with primary procedure coding to reflect additional arterial accesses. Data not available in the input regarding specific payer coverage determinations, allowed amounts, and associated ICD-10 diagnoses are noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare61651CPTintracranialendovascularangiographyinterventional-radiologyneuroradiologycatheter-placement

Billing Code Overview

CPT code 61651 describes the use of live, real-time imaging guidance to place an endovascular catheter into an intracranial artery for long-term administration of a non-thrombolytic drug, with performance of contrast-enhanced diagnostic angiography. This code is reported for each additional intracranial artery accessed after the first.

Service type: Image-guided intracranial endovascular catheter placement for long-term drug administration with diagnostic angiography
Typical site of service: Hospital inpatient or hospital outpatient interventional radiology/neuroradiology suite or hybrid operating room

Clinical & Coding Specifications

Clinical Context

A 58-year-old patient with a diagnosed recurrent intracranial neoplasm is scheduled for placement of an indwelling intracranial arterial catheter for long-term intra-arterial chemotherapy. The interventional neuroradiology team provides pre-procedure evaluation including review of prior imaging, coagulation status, and informed consent. In the angiography suite under conscious sedation or general anesthesia, the provider obtains arterial access, navigates to the target intracranial artery under real-time fluoroscopic imaging, performs contrast-enhanced diagnostic cerebral angiography to define vascular anatomy and tumor supply, and places the catheter for continuous or repeated non-thrombolytic drug administration. Post-placement, the team documents catheter tip location with angiographic images, assesses for complications (vasospasm, dissection, hemorrhage), and arranges post-procedure monitoring. Billing uses 61651 for each additional intracranial artery accessed and imaged after the first; the initial arterial access and diagnostic angiography are reported with the primary intracranial angiography code (not included here). Typical site of service is an hospital-based angiography or interventional radiology suite within an acute care hospital or outpatient ambulatory surgical center depending on patient status.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component

CPT 61650: Image-Guided Intracranial Endovascular Catheter Placement

CPT-61645-INTRACRANIAL-MECHANICAL-THROMBECTOMY

CPT 61645: Intracranial Mechanical Thrombectomy

Taxonomy Code	Specialty	Notes
207RH0000X	Radiology - Interventional Radiology	Primary specialty performing intracranial endovascular catheter placement and angiography.
2084P0200X	Neurological Surgery	Neurosurgeons who perform endovascular procedures or collaborate in catheter placements.
207L00000X	Radiology - Diagnostic Radiology	Diagnostic radiologists with interventional training who perform cerebral angiography and catheter placement.
2080S0004X	Vascular Neurology	Specialists involved in cerebral vascular disease management and intra-arterial therapies.
362E00000X	Interventional Cardiology (cerebral procedures uncommon)	Occasionally involved in endovascular access expertise; less common for intracranial procedures.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C71.9`	Malignant neoplasm of brain, unspecified	Brain tumors that may be treated with intra-arterial chemotherapy delivered via intracranial catheter.
`C71.4`	Malignant neoplasm of temporal lobe and hippocampus	Location-specific brain malignancy where targeted intra-arterial therapy may be indicated.
`I67.6`	Nonpyogenic thrombosis of intracranial venous system	Vascular conditions of the brain that may require diagnostic angiography during endovascular procedures (though thrombolytic therapy is excluded for `61651`).
`I63.9`	Cerebral infarction, unspecified	Acute or chronic cerebral ischemia leading to diagnostic angiography to evaluate vascular anatomy; intra-arterial non-thrombolytic therapies sometimes considered in research/complex cases.
`G93.1`	Anoxic brain damage, not elsewhere classified	Complex neurologic conditions where intracranial catheterization and angiography may be performed for diagnostic or therapeutic planning.
`D33.4`	Benign neoplasm of cerebral meninges	Intracranial lesions that may be assessed with selective angiography when planning localized therapy.
`C71.6`	Malignant neoplasm of cerebellum, fourth ventricle and related areas	Posterior fossa tumors potentially treated with intra-arterial approaches requiring intracranial catheter placement.
`G45.9`	Transient cerebral ischemic attack, unspecified	Vascular diagnostic procedures including intracranial angiography may be performed to evaluate TIA etiologies.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`36245`	Selective catheterization, cerebral, with angiography of the intracranial vessels (for example, internal carotid, anterior cerebral, middle cerebral, posterior cerebral)	Used to report the initial diagnostic cerebral angiography and selective catheterization of the first intracranial artery; `61651` reports each additional intracranial artery accessed.
`36246`	Selective catheterization, cerebral, each additional intracranial artery, when performed (List separately in addition to code for primary catheterization)	Similar adjunct/add-on code for intracranial selective catheterization and angiography when multiple arteries are accessed; used in same clinical workflow as catheter placement and imaging.
`61650`	Catheter placement, intracranial, for long-term infusion, with diagnostic angiography; initial intracranial artery	Reports the primary catheter placement and diagnostic angiography for the first intracranial artery; `61651` is reported for each additional artery accessed and imaged.
`36247`	Temporary or permanent transcatheter placement of intravascular stent(s), cerebral vessels	May be performed if vascular stenosis or anatomy requires stent placement during the same session.
`76937`	Ultrasound guidance for vascular access requiring ultrasound evaluation and documentation, with permanent recording and reporting	May be used if ultrasound guidance is employed for femoral or radial arterial access prior to intracranial catheter navigation.

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