fluoroscopy

DEFINITION of fluoroscopy

fluoroscopy is a dynamic radiographic imaging modality in which a continuous or pulsed X-ray beam is passed through the body and projected onto a fluorescent screen or digital image intensifier, producing real-time video-like visualization of internal anatomy and physiological function. It is widely used for procedural guidance (e.g., catheter placement, stone extraction), contrast studies (e.g., retrograde pyelography, voiding cystourethrography), and assessment of organ movement and function. The image is captured live, allowing the clinician to observe motion, flow, and positioning in real time.

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ETYMOLOGY of fluoroscopy

latin fluoro- Latin fluere / fluor “to flow” / “fluorescent light” (from >fluorite mineral) -scopy Greek skopein (σκοπεῖν)|“to examine / to look at”|

→ Literally: “to examine with fluorescent light”

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Related Terms

• Fluoroscope — the device used to perform fluoroscopy
• Image intensifier — the component that amplifies the X-ray signal into a visible image
• Contrast fluoroscopy — fluoroscopy performed with contrast media (e.g., iodinated contrast, barium)
• Retrograde pyelography — contrast study of the upper urinary tract using fluoroscopy (highly relevant in urology)
• VCUG (Voiding Cystourethrography) — fluoroscopic study of bladder and urethra during voiding
• KUB (Kidneys, Ureters, Bladder) — plain radiograph often paired with fluoroscopic studies
• Nephrostography — fluoroscopic contrast study through a nephrostomy tube
• Loopogram — fluoroscopic contrast study of a urinary ileal conduit
• Fluoroscopic guidance — use of fluoroscopy to direct needle, wire, or catheter placement
• Pulsed fluoroscopy — technique using intermittent X-ray pulses to reduce radiation dose
• Scatter radiation — secondary radiation emitted during fluoroscopy, safety concern for OR staff

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CODING AND NUANCES

ICD-10-PCS Codes (Inpatient — Section B: Imaging / Root Operation 1: Fluoroscopy)

🫘 Urinary System (Body System: T)

Code	Description
BT110ZZ	Fluoroscopy of Right Kidney using High Osmolar Contrast
BT111ZZ	Fluoroscopy of Right Kidney using Low Osmolar Contrast
BT11YZZ	Fluoroscopy of Right Kidney using Other Contrast
BT11ZZZ	Fluoroscopy of Right Kidney (no contrast)
BT120ZZ	Fluoroscopy of Left Kidney using High Osmolar Contrast
BT121ZZ	Fluoroscopy of Left Kidney using Low Osmolar Contrast
BT12YZZ	Fluoroscopy of Left Kidney using Other Contrast
BT12ZZZ	Fluoroscopy of Left Kidney (no contrast)
BT130ZZ	Fluoroscopy of Bilateral Kidneys using High Osmolar Contrast
BT131ZZ	Fluoroscopy of Bilateral Kidneys using Low Osmolar Contrast
BT13YZZ	Fluoroscopy of Bilateral Kidneys using Other Contrast
BT13ZZZ	Fluoroscopy of Bilateral Kidneys (no contrast)
BT14ZZZ	Fluoroscopy of Kidneys, Ureters and Bladder
BT1DZZZ	Fluoroscopy of Right Kidney, Ureter and Bladder

👂 Ear, Nose, Mouth & Throat (Body System: 9)

Code	Description
B91JZZZ	Fluoroscopy of Larynx

🫁 Respiratory (Body System: B)

Code	Description
BB12ZZZ	Fluoroscopy of Right Lung
BB16ZZZ	Fluoroscopy of Diaphragm
BB1CZZZ	Fluoroscopy of Mediastinum

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CPT Codes (Outpatient/Professional Reference)

Code	Description
76000	Fluoroscopy (separate procedure), up to 1 hour
76001	Fluoroscopy, physician time more than 1 hour (e.g., nephrostolithotomy, ERCP)
77002	Fluoroscopic guidance for needle placement
74420	Urography, retrograde (with or without KUB)
74455	Urethrocystography, voiding
74430	Cystography, minimum 3 views
74425	Urography, antegrade (e.g., nephrostogram)

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💡 Coding tip for inpatient: In ICD-10-PCS, fluoroscopy is always Root Operation = 1 under Section B (Imaging). The 4th character identifies the body part, the 5th identifies contrast type (0=High Osmolar, 1=Low Osmolar, Y=Other, Z=None), and characters 6-7 are typically ZZ for fluoroscopy unless a qualifier applies. Always verify laterality and contrast agent documented in the operative/radiology report.

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DERIVATIONS of fluoroscopy

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Query functionality

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Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms