CPT 78610Radiology

Brain flow imaging only

CPT code 78610 covers brain flow imaging, a nuclear medicine scan that tracks blood flow through the brain using a radioactive tracer to detect circulation abnormalities.

Showing rates for

National Average

Base Medicare rate

$154.94

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

0.3

PE RVU (NF)

4.44

MP RVU

0.05

Total RVU

4.79

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

NCCI bundling edits

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Billing tips

Verify that only flow imaging was performed; if static images or SPECT were also acquired, bill the comprehensive code 78615 or 78607 instead to avoid underbilling
Impact: Underbilling 78610 instead of 78615 can result in $50-100 revenue loss per study
Document the medical necessity for flow-only imaging in the order and report, particularly for brain death protocols where this code is most appropriate
Impact: Lack of medical necessity documentation accounts for 35-40% of denials for this code
Bill global service without modifiers when facility provides both technical and professional components; split billing with 26/TC modifiers only when components are truly separate
Impact: Incorrect modifier usage can delay payment 15-30 days and trigger claim review
Ensure radiopharmaceutical administration is separately billable and documented; this is not included in 78610 payment
Impact: Missing radiopharmaceutical billing (codes 78990 or A9500-series) can lose $50-200+ per procedure
Verify payer-specific policies on same-day nuclear medicine studies; some payers bundle multiple brain imaging codes unless modifier 59 documentation clearly supports separate medical necessity
Impact: Improper same-day billing without modifier 59 can result in 100% denial of second procedure ($154.94 loss)
Include time-activity curves and specific mention of arterial flow phase analysis in documentation to differentiate from static brain imaging
Impact: Detailed flow documentation reduces audit risk and supports medical necessity, preventing post-payment recoupment

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 78610 in 2025?

The 2025 Medicare national average payment for CPT 78610 is $154.94 for both facility and non-facility settings, based on 4.79 total RVUs and a conversion factor of 32.3465.

What is the difference between CPT 78610 and 78615?

CPT 78610 covers brain flow imaging only (dynamic vascular phase), while 78615 includes both cerebral vascular flow imaging AND cerebral blood pool imaging with static images. If both flow and static images are acquired, 78615 is the appropriate code.

Can CPT 78610 be billed with a brain SPECT scan on the same day?

Generally, 78610 would be bundled into comprehensive brain SPECT codes (78607, 78608, 78609) as the flow component. Bill separately only if performed as a distinct diagnostic study with different clinical indication, using modifier 59 with comprehensive documentation.

What are the work RVUs for CPT code 78610?

CPT 78610 has 0.3 work RVUs, 4.44 practice expense RVUs (both facility and non-facility), and 0.05 malpractice RVUs, totaling 4.79 RVUs for 2025.

Is CPT 78610 appropriate for brain death evaluation?

Yes, CPT 78610 is commonly used for brain death protocols where rapid flow imaging demonstrates absent or severely reduced cerebral perfusion. Documentation must clearly indicate brain death evaluation as the clinical indication.

How should I bill the radiopharmaceutical for CPT 78610?

The radiopharmaceutical is billed separately using HCPCS codes (typically A9500-series for the specific tracer used, such as Tc-99m DTPA or pertechnetate) or CPT 78990 for provision of diagnostic radiopharmaceutical. The drug cost is not included in the 78610 payment.

What modifiers are commonly used with CPT 78610?

The most common modifiers are 26 (professional component only) and TC (technical component only) for split billing, and 59 (distinct procedural service) when billing with other nuclear medicine studies on the same day. Global billing without modifiers is used when one entity provides both components.