Summary & Overview
CPT 72149: MRI Lumbar Spinal Canal and Contents with Contrast
CPT code 72149 covers contrast-enhanced magnetic resonance imaging (MRI) of the lumbar spinal canal and its contents. As a commonly used advanced imaging study, this code supports evaluation of lumbar degenerative disease, nerve root compression, infection, inflammatory conditions, and neoplasm. Nationally, contrast-enhanced lumbar MRI is an important diagnostic tool that influences surgical planning, pain management, and longitudinal care for patients with complex back pathology.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of coverage considerations and typical sites of service, payer-specific authorization and coverage patterns where available, and benchmarking context. The publication summarizes clinical indications that commonly prompt use of contrast-enhanced lumbar MRI and highlights billing and coding considerations relevant to imaging departments and radiology practices.
The report provides practical reference material: expected service type and typical settings for delivery, common modifiers and claim considerations (listed separately), and national-level payer coverage framing. Data not available in the input for taxonomies, detailed ICD-10 pairings, and payer-specific reimbursement rates are noted as unavailable and are not inferred.
Billing Code Overview
CPT code 72149 describes magnetic resonance imaging (MRI) of the lumbar spinal canal and contents with contrast. This diagnostic imaging procedure captures detailed cross-sectional images of the lumbar spine, nerve roots, and surrounding soft tissues after administration of contrast material.
Service type: Diagnostic imaging — MRI with contrast of the lumbar spine.
Typical site of service: Hospital outpatient imaging center or freestanding outpatient imaging facility.
Clinical & Coding Specifications
Clinical Context
A 52-year-old patient presents to an outpatient imaging center with progressive lower back pain radiating to the left lower extremity, intermittent numbness, and weakness suggestive of lumbar radiculopathy. Conservative care including physical therapy and oral analgesics over six weeks produced inadequate relief. The ordering physician documents concern for nerve root compression, suspected herniated nucleus pulposus, and potential epidural pathology. The patient arrives fasting per facility protocol, completes screening for MRI safety and contrast allergy, and intravenous access is established for gadolinium-based contrast administration. A diagnostic 72149 (MRI lumbar spinal canal and contents with contrast) is performed to evaluate spinal canal structures, nerve roots, epidural spaces, and postoperative change if applicable. Images are acquired in multiple planes and sequences with contrast-enhanced sequences to better characterize inflammatory, infectious, neoplastic, or postoperative scar versus recurrent disc pathology. A radiologist interprets the study, provides a signed report with relevant findings, and the ordering provider uses results to guide further management such as targeted epidural injection, surgical consultation, or ongoing conservative care.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when only the physician interpretation/report is billed separately from the technical component |