CPT 78606Radiology

Brain image w/flow 4 + views

CPT code 78606 represents a specialized brain scan that uses a radioactive tracer to capture images of both brain structure and blood flow patterns from four or more different angles. This nuclear medicine procedure helps doctors diagnose stroke, seizures, dementia, and other brain conditions by showing how blood moves through brain tissue.

Showing rates for

National Average

Base Medicare rate

$286.27

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

0.64

PE RVU (NF)

8.13

MP RVU

0.08

Total RVU

8.85

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

NCCI bundling edits

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Billing tips

Document all four or more views explicitly in the report with specific anatomical projections (anterior, posterior, right lateral, left lateral) to satisfy the minimum view requirement
Impact: Prevents denials for insufficient views, protecting the full $286.27 reimbursement versus downcoding to 78600 ($228.94) for fewer views
Ensure the radiologist report clearly describes both the dynamic flow phase imaging and the static planar imaging components, as both are required for 78606
Impact: Missing flow study documentation results in denial or downcoding, potentially reducing reimbursement by 15-20%
Bill separately for the radiopharmaceutical using HCPCS code A9505 (Thallium) or A9569 (Tc-99m exametazime) depending on the tracer used, as this is not included in the CPT code
Impact: Recovers additional $150-400 in radiopharmaceutical costs that are separately reimbursable and commonly overlooked
When performed in a hospital outpatient setting, verify facility versus non-facility status as both rates are identical ($286.27), but documentation requirements may differ
Impact: Ensures compliance with place of service coding and prevents future audit exposure
Do not bill 78606 with 78630 (brain SPECT) on the same day without modifier 59 and clear documentation of medical necessity for both studies
Impact: Prevents bundling denials and potential recoupment of $286.27 plus investigation for unbundling violations
For brain death protocols, ensure documentation supports medical necessity and includes physician orders specifically for brain death evaluation, as payers may have special coverage policies

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 78606 in 2025?

The 2025 Medicare national average payment rate for CPT 78606 is $286.27 for both facility and non-facility settings. This is based on 8.85 total RVUs (0.64 work RVU, 8.13 practice expense RVU, and 0.08 malpractice RVU) multiplied by the 2025 conversion factor of 32.3465.

What is the difference between CPT codes 78606 and 78610?

CPT 78606 requires brain imaging with flow study and 4 or more planar views, while 78610 adds brain SPECT (single photon emission computed tomography) imaging to the flow and planar views. Code 78610 represents a more comprehensive study with three-dimensional reconstruction and is reimbursed at a higher rate.

How many views are required to bill CPT code 78606?

A minimum of four views is required to bill CPT 78606, as indicated by the '4 + views' specification in the code descriptor. If fewer than four views are obtained, you should bill CPT 78600 (up to 2 views) or 78601 (3 views) instead, or append modifier 52 for reduced services with appropriate documentation.

Can CPT 78606 be billed with modifier 26 for professional component only?

Yes, CPT 78606 can be split into professional (modifier 26) and technical (modifier TC) components. This is common when a radiologist interprets images acquired at a separate facility. Each component is reimbursed at a percentage of the total $286.27 rate based on the RVU distribution between work/malpractice and practice expense.

What diagnosis codes support medical necessity for CPT 78606?

Common supporting diagnoses include cerebrovascular disease (I63.x, I67.x), epilepsy (G40.x), dementia (F01.x, F03.x, G30.x), transient ischemic attack (G45.x), brain death evaluation (G93.82), traumatic brain injury sequelae (S06.x), and pre-surgical seizure focus localization. Always verify local coverage determinations (LCDs) for your MAC jurisdiction.

Is the radiopharmaceutical included in CPT 78606 reimbursement?

No, the radiopharmaceutical is not included in CPT 78606 and must be billed separately using appropriate HCPCS codes such as A9505 (Thallium Tl-201) or A9569 (Tc-99m exametazime). The $286.27 reimbursement covers only the technical and professional services for image acquisition and interpretation.

How often does Medicare allow CPT 78606 to be performed?

Medicare does not have a specific frequency limitation for CPT 78606, but each study must be medically necessary and supported by documentation. Repeat studies require clear justification such as monitoring disease progression, evaluating treatment response, or new clinical symptoms. Frequency greater than once every 3-6 months typically requires additional documentation of medical necessity.