Summary & Overview

CPT 72159: MRI Angiography of Spinal Canal Vessels

CPT code 72159 designates an MRI-based angiographic study of the spinal canal and its vascular structures to assess for vessel stenosis or aneurysm. This diagnostic imaging code is nationally significant because it supports evaluation of potentially serious spinal vascular pathology that can affect surgical planning, endovascular interventions, and acute neurologic management.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical intent of the code, typical service settings, and the common billing modifiers associated with advanced imaging. The publication outlines benchmarking context for utilization and coverage patterns across major commercial and government payers, highlights clinical scenarios where the study is commonly applied, and summarizes documentation elements that influence coding and medical necessity review.

This resource is organized to help billing managers, clinical radiology leads, and policy analysts quickly understand what CPT code 72159 represents, where it is typically performed, and the payer landscape affecting access and authorization for spinal vascular MRI studies. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 72159spinal MRImagnetic resonance angiographydiagnostic imagingneuroradiologyimaging reimbursementradiology billing

Billing Code Overview

CPT code 72159 describes a diagnostic magnetic resonance imaging (MRI) angiography of the spinal canal and its contents to evaluate the blood vessels for conditions such as stenosis or aneurysm. The procedure may be performed with or without the use of intravenous contrast to enhance visualization of vascular structures.

Service type: Diagnostic MRI — spinal vascular imaging (MRA/MRI with vascular focus)

Typical site of service: Hospital outpatient imaging centers or ambulatory imaging centers

Clinical & Coding Specifications

Clinical Context

A 58-year-old male with progressive lower extremity weakness, numbness, and intermittent radicular pain presents to neurology after an outpatient spine clinic evaluation. Prior lumbar MRI without contrast showed multilevel degenerative changes but could not fully exclude vascular compression or an arteriovenous malformation. The patient is referred for spinal magnetic resonance angiography to evaluate the blood vessels of the spinal canal and spinal cord for suspected spinal canal vascular stenosis or an aneurysm. Consent is obtained; IV access is established. The patient is screened for MRI and contrast safety (renal function, allergy). The radiology team performs 72159 (MRI of blood vessels of the spinal canal and contents, with or without contrast) using a dedicated spinal coil, time-resolved sequences if indicated, and intravenous gadolinium contrast when vascular detail is required. Post-procedure, images are reviewed by a neuroradiologist, a formal report documents vessel anatomy, presence or absence of stenosis, aneurysm, fistula, or AVM, and findings are communicated to the referring neurosurgeon or neurologist for treatment planning. Typical site of service is an outpatient imaging center or hospital radiology department.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing the interpreting physician's professional reading separate from the technical component.

Taxonomy Code	Specialty	Notes
2084P0800X	Neuroradiology	Interpreting specialists for spine vascular imaging and complex spinal vascular disorders.
207L00000X	Diagnostic Radiology	Common provider specialty performing and interpreting spinal MRI/MRA.
2086S0126X	Neurological Surgery	Frequently requests and acts on spinal vascular imaging for surgical planning.
208VP0006X	Neurology	Refers patients for diagnostic vascular spine imaging for ischemic or compressive syndromes.

ICD-10 Code	Description	Clinical Relevance
`I67.6`	Nonpyogenic thrombosis of intracranial venous system	Spinal vascular imaging may be used when venous thrombosis extends to spinal veins or presents with spinal cord signs.
`I72.9`	Peripheral vascular disease, unspecified	Relevant when vascular abnormalities affecting spinal canal perfusion are suspected as part of systemic vascular disease evaluation.
`G95.9`	Disease of spinal cord, unspecified	Used when a non-specific spinal cord disorder requires vascular evaluation to exclude vascular causes.
`G83.4`	Cauda equina syndrome	MRA of spinal vessels can help identify vascular compression or hemorrhagic lesions contributing to acute cauda equina symptoms.
`M48.06`	Spinal stenosis, lumbar region	When vascular evaluation is needed to differentiate neurogenic compression from vascular compromise or to assess vascular anatomy prior to intervention.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`72156`	MRI lumbar spine; without contrast material, followed by contrast and further sequences (e.g., combined non-contrast and contrast study)	Performed when both routine lumbar spine MRI sequences and contrast-enhanced vascular sequences are needed in the same encounter; may be billed in combination following payer rules.
`70544`	Magnetic resonance angiography, head, without contrast material (e.g., MRA intracranial without contrast)	May be performed in the same session when evaluating craniovertebral junction vascular anatomy or intracranial extension of pathology.
`76098`	Vascular embolization and/or thrombectomy, radiological supervision and interpretation	Represents an interventional follow-up procedure if a spinal vascular lesion identified on `72159` requires endovascular treatment; radiology supervision and interpretation codes may apply.
`73110`	Radiologic examination, lower extremity, arterial, unilateral, with contrast (arteriography)	Can be part of the diagnostic/therapeutic workup to characterize peripheral-spinal vascular supply when invasive angiography is indicated following abnormal MRI/MRA findings.
`99152`	Moderate sedation services provided by physician or other qualified health care professional (for patients under sedation)	Billed when moderate sedation is provided for patient comfort during imaging that requires immobilization or prolonged acquisition time.

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