CPT 78761Radiology

Testicular imaging w/flow

CPT 78761 covers a specialized nuclear medicine scan of the testicles that uses radioactive tracers to evaluate blood flow. This imaging test helps doctors diagnose conditions like testicular torsion, infection, or tumors by showing both the structure and blood circulation in real-time.

Showing rates for

National Average

Base Medicare rate

$188.90

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

0.71

PE RVU (NF)

5.05

MP RVU

0.08

Total RVU

5.84

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

NCCI bundling edits

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Billing tips

Ensure documentation explicitly describes both the dynamic flow phase and static blood pool images, as the code requires both components
Impact: Missing flow phase documentation accounts for 30-40% of denials; proper documentation protects full $188.90 reimbursement
Bill the radiopharmaceutical separately using HCPCS code A9512 (Technetium Tc-99m pertechnetate) to capture additional reimbursement beyond the procedure fee
Impact: Radiopharmaceutical billing adds approximately $35-75 per study depending on payer and dose
Document medical necessity with specific clinical indication (acute scrotal pain with duration, physical exam findings) rather than generic 'scrotal pain'
Impact: Specific documentation reduces denial rates by 25-35% for this high-scrutiny procedure
Submit time-stamped images showing arterial flow phase within 1-2 minutes of injection to substantiate the 'with flow' component distinct from static imaging alone
Impact: Differentiates from potentially lower-reimbursed static-only codes and prevents downcoding
For hospital billing, ensure both the facility fee and professional interpretation are coded correctly to maximize the total $188.90 reimbursement
Impact: Split billing errors cost facilities an average of 30-40% of potential reimbursement per study
Verify pre-authorization requirements for non-emergency cases, as many commercial payers require prior approval for nuclear medicine studies
Impact: Lack of pre-authorization is the leading cause of full denials worth $188.90 per case

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 78761 in 2025?

The 2025 Medicare national average reimbursement for CPT 78761 is $188.90 for both facility and non-facility settings. This is based on 5.84 total RVUs multiplied by the 2025 conversion factor of 32.3465.

Can CPT 78761 be billed with scrotal ultrasound on the same day?

Yes, but it often requires modifier 59 or XU to bypass NCCI edits. You must document that the nuclear medicine study provided distinct diagnostic information beyond the ultrasound, such as when ultrasound findings were equivocal for testicular torsion or when perfusion assessment was clinically necessary.

What is the difference between CPT 78761 and static testicular imaging?

CPT 78761 specifically includes dynamic vascular flow imaging captured immediately after radiopharmaceutical injection, showing arterial perfusion in real-time. This flow component is critical for differentiating testicular torsion (decreased flow) from inflammation (increased flow) and must be documented to support this code.

Do I need prior authorization for CPT 78761?

Prior authorization requirements vary by payer. Most commercial payers require pre-authorization for non-emergent nuclear medicine studies, while Medicare typically does not. Emergency presentations for suspected testicular torsion are usually exempt from prior authorization requirements, but documentation of the emergent nature is essential.

How do I bill for the radiopharmaceutical used in testicular imaging?

Bill the radiopharmaceutical separately using HCPCS code A9512 for Technetium Tc-99m pertechnetate. The dosage is typically reported in millicuries (mCi), and this is billed in addition to CPT 78761 for the imaging procedure itself.

What documentation is required to support medical necessity for CPT 78761?

Documentation must include specific clinical indications such as acute scrotal pain with duration, physical exam findings (swelling, tenderness, erythema), and rationale for nuclear imaging over or in addition to ultrasound. For best reimbursement, include why immediate perfusion assessment was clinically necessary and time-critical.

Can CPT 78761 be billed with modifier 26 for professional component only?

Yes, modifier 26 can be appended when billing only the physician's interpretation and report, typically when a hospital or imaging center owns the equipment and bills the technical component separately with modifier TC. The professional component represents approximately 40-50% of the total $188.90 reimbursement.