CPT 72202Radiology

X-ray exam si joints 3/> vws

CPT 72202 is the billing code for X-ray imaging of the sacroiliac (SI) joints using three or more different views. These are the joints connecting your lower spine to your pelvis, often imaged when patients have lower back or buttock pain.

Showing rates for

National Average

Base Medicare rate

$38.17

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

0.23

PE RVU (NF)

0.93

MP RVU

0.02

Total RVU

1.18

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

NCCI bundling edits

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Billing tips

Document the exact number of views taken (3, 4, 5, etc.) in both the technologist's notes and radiologist's report to support the three-or-more-views requirement
Impact: Prevents downcoding to 72200 (1-2 views, pays approximately $7-8 less) which is the most common cause of reduced reimbursement
Bill with appropriate laterality modifiers (RT/LT) when only one SI joint is imaged, as many payers now require anatomical location specificity
Impact: Reduces denial rate by 15-20% and prevents administrative delays requiring claim resubmission
Separate professional and technical components when performed in different locations (interpretation at one facility, imaging at another) using modifiers 26 and TC
Impact: Ensures proper payment split; prevents overpayment recoveries and audit flags
Verify medical necessity documentation includes specific clinical indication beyond 'low back pain' - specify SI joint involvement, suspected sacroiliitis, or relevant trauma
Impact: Reduces medical necessity denials by approximately 25%; vague indications trigger auto-denials with many payers
Do not bill 72202 with lumbar spine X-rays (72100-72120) without modifier 59 if both are performed same day, unless clearly separate encounters or medical necessity
Impact: Prevents bundling denials; when unbundled appropriately, preserves the full $38.17 reimbursement
Submit claims within 30 days of service date; SI joint imaging claims have higher rejection rates when filed beyond 90 days
Impact: Timely filing ensures 98%+ payment rate versus 60-70% for late submissions due to coordination of benefits issues

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 72202 in 2025?

The 2025 Medicare national average reimbursement for CPT 72202 is $38.17 for both facility and non-facility settings. This rate is based on 1.18 total RVUs multiplied by the 2025 conversion factor of 32.3465.

How many views are required to bill CPT 72202 instead of 72200?

CPT 72202 requires a minimum of three views of the sacroiliac joints. If only one or two views are obtained, you must bill CPT 72200 instead. The exact number of views (3, 4, 5, etc.) must be documented in both the technologist notes and radiology report to support coding.

Can I bill CPT 72202 with a lumbar spine X-ray on the same day?

Yes, but you may need modifier 59 on CPT 72202 to indicate a distinct procedural service. Documentation must clearly show separate medical necessity for SI joint imaging beyond the lumbar spine study. Many payers will bundle these without proper modifier usage and distinct clinical indications.

What are the work RVUs for CPT code 72202?

CPT 72202 has 0.23 work RVUs, 0.93 practice expense RVUs (both facility and non-facility), and 0.02 malpractice RVUs, totaling 1.18 RVUs in 2025.

Do I need a modifier when billing only the professional component of 72202?

Yes, use modifier 26 when billing only the professional component (physician interpretation and report). This is common when a radiologist interprets images taken at another facility. The technical component would be billed separately with modifier TC by the facility that performed the imaging.

What diagnosis codes support medical necessity for CPT 72202?

Common supporting diagnoses include M46.1 (sacroiliitis), M53.3 (sacrococcygeal disorders), S33.6 (sprain of sacroiliac joint), M45 (ankylosing spondylitis), and specific SI joint pain codes. Non-specific low back pain (M54.5) alone often triggers medical necessity denials without additional clinical documentation.

Is CPT 72202 a bilateral code or do I bill it twice for both SI joints?

CPT 72202 is inherently bilateral when both SI joints are imaged. Bill it only once regardless of whether one or both joints are examined. Use modifiers RT or LT only when imaging is limited to a single side, but reimbursement remains the same.