CPT 72149Radiology

Mri lumbar spine w/dye

CPT code 72149 covers an MRI scan of the lower back (lumbar spine) performed with contrast dye injected into a vein to enhance image clarity and help doctors identify abnormalities like tumors, infections, or disc problems.

Showing rates for

National Average

Base Medicare rate

$266.21

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

1.78

PE RVU (NF)

6.32

MP RVU

0.13

Total RVU

8.23

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Always verify contrast administration is documented in both the order and the radiology report with specific contrast agent name, dose, route, and time of administration
Impact: Prevents downcoding to 72148 (without contrast) which would reduce reimbursement by approximately $60-80 per procedure
Ensure medical necessity documentation clearly indicates why contrast enhancement was clinically required rather than non-contrast or MRI without/with imaging
Impact: Reduces denial rate by 30-40% and prevents retrospective medical necessity denials that can delay payment 60-90 days
Bill the complete procedure code 72149 rather than splitting into separate sequences; do not separately report 72148 plus contrast administration
Impact: Prevents unbundling denials and potential compliance audits; correct coding maintains full $266.21 reimbursement
Verify eGFR/renal function screening is documented before contrast administration to support medical necessity and safety protocols
Impact: Protects against medical necessity denials and demonstrates compliance with safety guidelines, reducing audit risk
When performed in hospital outpatient department, ensure facility bills technical component and radiologist bills professional component with modifier 26
Impact: Proper component billing ensures complete reimbursement; errors can result in 85-90% payment loss on professional or technical side
Do not bill 72149 with 72158 (lumbar spine without/with contrast) on same date; 72158 includes both sequences and contrast administration
Prevents unbundling denials and potential fraud flags; using correct code (72158) when both non-contrast and contrast sequences performed avoids compliance issues

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 72149 in 2025?

The 2025 Medicare national average reimbursement rate for CPT 72149 is $266.21 for both facility and non-facility settings, based on 8.23 total RVUs and the 2025 conversion factor of 32.3465.

What is the difference between CPT 72149 and 72148?

CPT 72149 is an MRI of the lumbar spine performed with intravenous contrast dye, while 72148 is the same procedure performed without contrast material. Code 72149 reimburses approximately $60-80 more than 72148 but requires documentation of contrast administration and medical necessity for the contrast agent.

Can you bill CPT 72149 and 72148 together?

No, you cannot bill 72149 and 72148 together. If both non-contrast and contrast sequences are performed during the same session, the correct code is 72158 (MRI lumbar spine without contrast followed by with contrast). Billing both 72148 and 72149 will result in unbundling denials.

How many RVUs is CPT code 72149 worth in 2025?

CPT 72149 has 8.23 total RVUs in 2025, consisting of 1.78 work RVUs, 6.32 practice expense RVUs (both facility and non-facility), and 0.13 malpractice RVUs according to the CMS Physician Fee Schedule.

What diagnosis codes support medical necessity for CPT 72149?

Common supporting diagnoses include M51.06-M51.07 (lumbar disc disorders with radiculopathy), M48.06 (lumbar spinal stenosis), C79.51 (secondary malignant neoplasm of bone), M46.26-M46.27 (osteomyelitis/discitis of lumbar region), G89.4 (chronic pain syndrome), and M96.1 (postlaminectomy syndrome). The diagnosis must justify why contrast enhancement is medically necessary.

Does CPT 72149 require prior authorization?

Prior authorization requirements vary by payer. Most Medicare Advantage plans and many commercial insurers require prior authorization for CPT 72149 under advanced imaging utilization management programs. Original Medicare typically does not require prior authorization but may conduct retrospective medical necessity reviews.

What modifiers are commonly used with CPT 72149?

The most common modifiers are 26 (professional component only when radiologist bills interpretation separately) and TC (technical component only when facility bills equipment/staff costs separately). Modifier 59 may be used to indicate a distinct procedural service when performed with other imaging on the same date, and modifier 76 for repeat procedures by the same physician on the same day.