X-ray exam of sinuses
CPT code 70210 covers a standard X-ray examination of the sinuses, the air-filled spaces in the bones around your nose and eyes. This is typically ordered when a patient has symptoms of a sinus infection or other sinus problems.
RVU breakdown
Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High
Billing tips
Verify medical necessity documentation before billing - payer policies increasingly require failed conservative treatment (10-14 days) before imaging for sinusitis
Impact: Prevents denials worth $31.38 per claim; some payers deny 20-30% of sinus X-rays for lack of medical necessity documentation
Bill global code 70210 only when your facility provides both technical and professional components; split bill with 26/TC modifiers when components are separate
Impact: Incorrect component billing can result in overpayment recovery demands or underpayment; proper modifier use ensures accurate $31.38 reimbursement split
Document number of views obtained in radiology report (minimum 3 views typically required for 70210)
Impact: Fewer views may trigger downcoding or denial; fewer than standard views should use modifier 52 with proportional reduction
Check for local coverage determinations (LCDs) - many Medicare Administrative Contractors have specific coverage criteria for sinus imaging
Impact: Non-compliant claims face denial; advance beneficiary notices (ABNs) may be required when coverage is uncertain, protecting $31.38 revenue
Do not bill 70210 with CT or MRI of sinuses on same day unless clearly distinct and medically necessary
Impact: Bundling edits often deny the lower-paying X-ray; improper unbundling risks compliance review and potential $31.38 recoupment plus penalties
Ensure written order includes clinical indication and is signed/dated before exam performance
Impact: Missing or inadequate orders are top audit finding; can result in 100% denial of payment even with proper imaging performed
Common denials
Medical necessity not established - insufficient documentation of symptoms, duration, or failed conservative therapy
How to appeal: Submit clinical notes showing symptom duration (typically 7-14 days minimum), specific clinical findings, and documentation of antibiotic or other treatment attempted. Include evidence-based guidelines supporting imaging indication.
No valid physician order on file or order missing required elements (signature, date, clinical indication)
How to appeal: Provide complete, signed, and dated physician order with specific clinical indication. If original order was incomplete, obtain corrected order and explain the administrative oversight with evidence the exam was medically appropriate.
Bundled/included in more comprehensive imaging service performed same date (e.g., CT sinuses)
How to appeal: Document medical necessity for both procedures with timeline showing X-ray was performed first or separately, or demonstrate distinct clinical questions. Use modifier 59 or XU if procedures were truly separate and necessary.
Duplicate service - same or similar imaging recently performed
How to appeal: Provide clinical documentation justifying repeat imaging (e.g., worsening symptoms despite treatment, new clinical indication, follow-up per treatment protocol). Use modifier 76 or 77 as appropriate and cite clinical guidelines supporting repeat imaging timeframe.
Frequently asked questions
What is the CPT code 70210 reimbursement rate for 2025?
The 2025 Medicare national average reimbursement for CPT 70210 is $31.38 for both facility and non-facility settings. This rate is based on a total RVU of 0.97 and the 2025 conversion factor of 32.3465.
How many RVUs is CPT code 70210 worth?
CPT 70210 has a total RVU value of 0.97 for 2025, consisting of 0.17 work RVU, 0.78 practice expense RVU, and 0.02 malpractice RVU.
Does Medicare cover CPT 70210 for sinus X-rays?
Yes, Medicare covers CPT 70210 when medically necessary, but coverage typically requires documentation of persistent symptoms lasting 7-14 days, failed conservative treatment, and specific clinical indications. Many Medicare Administrative Contractors have local coverage determinations with specific criteria that must be met.
What is the difference between CPT 70210 and 70220?
CPT 70210 is a standard sinus X-ray examination with limited views, while 70220 represents a complete sinus series with more extensive views. The complete series (70220) typically includes more projections and has higher reimbursement due to increased complexity.
Can you bill CPT 70210 and a CT scan of sinuses on the same day?
Generally no, unless the services are distinct and separately identifiable with different clinical purposes. Most payers consider sinus X-rays bundled into CT imaging when performed the same day. If both are necessary, use modifier 59 with extensive documentation explaining the separate medical necessity.
What modifier should I use when billing only the reading of a sinus X-ray?
Use modifier 26 (professional component) when billing only for the physician interpretation and report, when the technical component (equipment and staff) is provided by another entity such as a hospital or imaging center.
How long does a patient need to have symptoms before a sinus X-ray is covered?
Most payers require documentation of symptoms lasting at least 7-14 days with failed conservative treatment before sinus imaging is considered medically necessary. Acute sinusitis in the first few days typically does not meet imaging criteria unless there are complications or specific clinical red flags.