78635 Csf ventriculography
Also known as: CSF ventriculography, ventricular imaging
Cerebrospinal fluid ventriculography performed to assess cerebrospinal fluid flow through ventricular system.
In Plain Language
brain ventricle fluid imaging
Clinical Context
Evaluates ventricular cerebrospinal fluid flow dynamics and detects ventricular obstruction.
RVU Breakdown
| Work RVU | 0.59 |
| Total RVU | 0.59 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
Radiology codes require a written order, clinical indication, and a formal interpretation report. The professional component (modifier -26) and technical component (modifier -TC) may be billed separately.
How This Code Compares
With a work RVU of 0.59, this code ranks in the 38th percentile among Radiology codes — 1.4x below the median (0.81). The highest wRVU in this category is 11.57.
Specialties
Frequently Asked Questions
What is CPT code 78635?
CPT 78635 (Csf ventriculography) is a Radiology code. Cerebrospinal fluid ventriculography performed to assess cerebrospinal fluid flow through ventricular system.
Who uses CPT code 78635?
CPT 78635 is used by Nuclear Medicine, Neurosurgery, Radiology. Evaluates ventricular cerebrospinal fluid flow dynamics and detects ventricular obstruction.
When is CPT 78635 used?
Evaluates ventricular cerebrospinal fluid flow dynamics and detects ventricular obstruction.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.