CPT 72157Radiology

Mri chest spine w/o & w/dye

CPT 72157 is an MRI scan of the thoracic spine (mid-back) performed twice: once without contrast dye, then again after injecting contrast dye through an IV to highlight blood vessels and tissues.

Showing rates for

National Average

Base Medicare rate

$315.70

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

2.29

PE RVU (NF)

7.31

MP RVU

0.16

Total RVU

9.76

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

NCCI bundling edits

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Billing tips

Always verify pre-authorization before scheduling - most commercial payers require prior authorization for MRI with contrast
Impact: Prevents denials that can delay payment 30-90 days and reduces appeal workload by 70-80%
Document medical necessity for BOTH non-contrast and contrast phases - payers often deny when only non-contrast imaging appears justified
Impact: Reduces downcoding to 72146 (without contrast only) which pays approximately $100 less per study
Verify renal function documentation (eGFR) within 30 days before contrast administration for Medicare patients
Impact: Required for compliance with LCD requirements; missing documentation can trigger medical review and payment hold
Bill global code 72157 only when both technical and professional components are provided by same entity; split bill with 26/TC when appropriate
Impact: Incorrect component billing can result in overpayment recovery or underpayment of $100-200 per claim
Check LCD policies for covered diagnoses - not all back pain diagnoses support medical necessity for contrast-enhanced MRI
Impact: Non-covered diagnosis codes result in denials; using specific diagnosis like C79.51 (metastatic bone disease) vs M54.6 (general thoracic pain) affects approval rates
When billing same-day with other spinal MRI regions (cervical/lumbar), append modifier 59 to secondary codes and ensure separate documentation
Impact: Prevents NCCI bundling edits that automatically deny secondary procedures; recovers $300+ per additional region

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 72157 in 2025?

The 2025 Medicare national average reimbursement for CPT 72157 is $315.70 for both facility and non-facility settings. This is based on 9.76 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary by geographic locality based on GPCI adjustments.

Does CPT 72157 require prior authorization from Medicare or commercial insurance?

Medicare typically does not require prior authorization for 72157, but many Medicare Advantage plans do. Most commercial payers require prior authorization for MRI with contrast. Always verify authorization requirements with the specific payer before scheduling to avoid denials, as authorization policies vary significantly by plan and state.

What is the difference between CPT 72157 and 72146?

CPT 72146 is an MRI of the thoracic spine without contrast material only, while CPT 72157 includes imaging both without and with contrast in the same session. Code 72157 provides more comprehensive evaluation for conditions requiring contrast enhancement such as tumors or infections, but requires additional documentation of medical necessity for the contrast phase.

Can you bill CPT 72157 with other spinal MRI codes on the same day?

Yes, you can bill 72157 with cervical (72156/72141) or lumbar (72158/72148) MRI codes when separate anatomical regions are scanned for distinct clinical indications. Append modifier 59 to the secondary codes and ensure each region has separate medical necessity documentation. Payers may apply multiple procedure payment reductions to secondary codes.

What diagnosis codes support medical necessity for CPT 72157?

Diagnosis codes supporting 72157 include malignant neoplasms (C79.51), spinal cord disorders (G95.x), discitis/osteomyelitis (M46.2x), myelopathy (M50.0x, G99.2), radiculopathy with red flags, spinal stenosis with progressive neurological symptoms, and post-surgical complications. Simple mechanical back pain (M54.6) without neurological findings typically does not support contrast-enhanced MRI and may result in denial or downcoding.

How do you bill CPT 72157 when only the radiologist interpretation is performed?

When billing only for the professional component (radiologist interpretation), append modifier 26 to CPT 72157. The facility or imaging center bills the technical component using modifier TC. The professional component represents approximately 30-40% of the total allowable, while the technical component represents 60-70%. Never bill the global code when components are split between entities.

What are the RVU values for CPT code 72157 in 2025?

For 2025, CPT 72157 has a work RVU of 2.29, practice expense RVU of 7.31 (both facility and non-facility), and malpractice RVU of 0.16, totaling 9.76 RVUs. These values are from the CMS Medicare Physician Fee Schedule RVU25A released December 23, 2024. The total RVUs multiplied by the conversion factor of 32.3465 equals the $315.70 Medicare payment.