CPT 72120Radiology

X-ray bend only l-s spine

CPT code 72120 is for X-ray imaging of the lower back (lumbosacral spine) taken while the patient is bending forward or backward. These special views help doctors assess spine flexibility and detect abnormalities that only appear during movement.

Showing rates for

National Average

Base Medicare rate

$39.46

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

0.22

PE RVU (NF)

0.98

MP RVU

0.02

Total RVU

1.22

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

NCCI bundling edits

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Billing tips

Verify that bending views were actually performed and documented separately from standard lumbosacral spine X-rays (72110). Do not use 72120 for routine AP/lateral views.
Impact: Prevents downcoding to 72110 ($32.36) or bundling denials, protecting $7.10 differential per study
Ensure documentation specifies the direction of bending (flexion, extension, or both) and number of views obtained. Medical necessity for functional assessment must be clear.
Impact: Missing documentation of bending positions results in 40-60% denial rate on appeal; proper documentation ensures full $39.46 payment
Bill 72120 separately from 72110 (standard L-S spine 2-3 views) only when both are medically necessary and clearly documented as distinct studies on same date of service.
Impact: When properly documented, both codes are payable totaling $71.82; improper billing risks bundling and loss of $39.46
For facility billing, recognize that facility and non-facility rates are identical ($39.46), so place of service does not affect reimbursement for this code.
Impact: Simplifies billing process; no need to adjust expectations based on setting unlike many other radiology codes
When ordering physician bills E/M same day, ensure bending study medical necessity is documented in the E/M note with specific clinical indication beyond routine back pain.
Impact: Prevents payer scrutiny and medical necessity denials; supports both E/M and imaging payment without modifier 25 issues
Review RVU allocation (Work: 0.22, PE: 0.98, MP: 0.02) when negotiating commercial contracts; this code is PE-heavy indicating equipment costs dominate.

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Frequently asked questions

What is the difference between CPT 72120 and 72110?

CPT 72110 covers standard lumbosacral spine X-rays (typically 2-3 views in static positions like AP and lateral), while CPT 72120 specifically represents bending or dynamic views taken during flexion and/or extension. Code 72120 is used to assess spinal motion and stability, while 72110 evaluates static anatomy. They can be billed together when both are medically necessary and clearly documented as separate studies.

How much does Medicare pay for CPT code 72120 in 2025?

Medicare pays $39.46 for CPT 72120 in 2025 based on the national average rate. This rate is the same for both facility and non-facility settings. The total RVU is 1.22 multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary slightly based on geographic location and specific Medicare Administrative Contractor (MAC).

Can you bill 72120 and 72110 on the same day?

Yes, you can bill both CPT 72120 and 72110 on the same day when medically necessary and properly documented. However, documentation must clearly distinguish the bending study (72120) as a separate examination from the standard spine series (72110), with specific clinical justification for the dynamic assessment. Some payers may require modifier 59 on 72120 to indicate a distinct procedural service.

What diagnosis codes support medical necessity for CPT 72120?

Common supporting diagnosis codes include M43.06 (spondylolisthesis of lumbar region), M53.2X7 (spinal instabilities, lumbosacral region), M54.5 (low back pain) when combined with history suggesting instability, M96.1 (postlaminectomy syndrome), and post-surgical fusion evaluation codes. The key is documenting why dynamic assessment is necessary beyond static imaging - such as evaluating motion, instability, or fusion status.

How many views are included in CPT 72120?

CPT 72120 includes bending views of the lumbosacral spine, typically flexion and/or extension views. The exact number of views is not specified in the code descriptor, but typically includes 2-4 images (flexion, extension, or both directions). The code represents the complete bending study regardless of exact view count, as long as functional/dynamic positioning is documented.

What are the RVUs for CPT code 72120?

For 2025, CPT 72120 has a Work RVU of 0.22, Practice Expense RVU of 0.98 (both facility and non-facility), and Malpractice RVU of 0.02, totaling 1.22 RVUs. The practice expense component represents 80% of total RVUs, reflecting the equipment and technical costs. When multiplied by the 2025 conversion factor of 32.3465, this yields the Medicare payment of $39.46.

Do I need a modifier when billing professional component only for 72120?

Yes, use modifier 26 when billing only the professional component (physician interpretation) of CPT 72120. This is common when a radiologist interprets images taken at a facility that bills separately for the technical component. The facility would bill 72120-TC for the technical component. Without proper modifiers, the global service is assumed, which could result in overpayment and subsequent recoupment.