Summary & Overview
CPT 72156: MRI Cervical Spine Without and With Contrast
CPT code 72156 represents an MRI of the cervical spinal canal and its contents performed both without and with intravenous contrast. This two-part MRI study is commonly used to evaluate cervical spinal cord pathology, compressive lesions, inflammatory or demyelinating disease, postoperative changes, and neoplastic processes. Nationally, the code matters because it captures a commonly ordered advanced diagnostic imaging service with implications for utilization management, imaging capacity, and contrast-agent use.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and appropriate site-of-service settings, typical utilization patterns, relevant billing considerations, and benchmarking where available. The publication also outlines common modifiers and payer-facing operational notes for claims processing.
This resource is intended to provide payers, billing professionals, and clinical administrators a practical reference on the clinical intent of CPT code 72156, typical delivery settings, and the high-level policy and billing issues associated with a combined non-contrast and contrast cervical spine MRI.
Billing Code Overview
CPT code 72156 describes magnetic resonance imaging (MRI) of the cervical spinal canal and contents performed both without contrast and with contrast (pre- and post-contrast sequences). This diagnostic imaging study evaluates soft tissues of the cervical spine, including the spinal cord, nerve roots, intervertebral discs, and surrounding ligaments.
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Service type: Diagnostic MRI with and without contrast
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Typical site of service: Outpatient imaging center or hospital outpatient department
Clinical & Coding Specifications
Clinical Context
A 52-year-old patient presents to the outpatient radiology department with progressive neck pain, intermittent paresthesia in both upper extremities, and intermittent gait instability after a fall six weeks prior. The referring neurosurgeon requests detailed evaluation of the cervical spinal canal for suspected disc herniation, spinal cord compression, and possible intradural pathology. The patient arrives fasting not required, is screened for MRI safety and contrast allergies, and completes a pregnancy check if applicable. The MRI technologist acquires a standard cervical spine MRI protocol first without intravenous gadolinium contrast to evaluate alignment, intervertebral discs, foramina, and spinal cord signal. After review of the non-contrast sequences and confirmation that contrast is indicated, the radiologist orders intravenous gadolinium and repeat contrast-enhanced sequences to assess for enhancement of the spinal cord, nerve roots, leptomeninges, or an enhancing mass.
The typical workflow includes scheduling and insurance verification, MRI safety screening, IV placement by technologist or nurse, non-contrast MRI acquisition, radiologist review and decision to proceed with contrast, contrast administration and post-contrast imaging, radiologist interpretation, and issuance of a signed report to the referring provider. Typical sites of service are outpatient hospital radiology departments, freestanding imaging centers, and inpatient hospital radiology when the patient is admitted. The service type is diagnostic imaging (MRI cervical spine with and without contrast).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 |