CPT code 74450: Urethrocystography, retrograde study2026 Medicare rate & RVUs

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 74450 covers

This service covers the imaging supervision and interpretation for a retrograde urethrocystogram. Contrast is introduced through the urethra, and fluoroscopic images show the urethral passage and bladder. The study may help assess a suspected urethral narrowing, injury, or altered anatomy. A urologist or other qualified clinician may perform the contrast instillation, while a radiologist commonly interprets the images. The examination is performed in a setting equipped for fluoroscopic imaging.

Medicare assigns this CPT code physician fee schedule status C, or carrier priced: CMS publishes no national payment, and the Medicare Administrative Contractor sets payment for each claim. The radiology service has professional and technical components. Report modifier 26 for the interpretation, modifier TC for equipment and staff, or neither modifier for the global service. The related contrast-injection service may be reported separately when performed.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 74450 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

74450 rates by state

Office rate range in each state. Select a state to see its payment localities.

How the 74450 rate is calculated

Each of 74450’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 74450

The CMS indicators that decide how 74450 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

74450 compared with similar codes

How to choose

74455Voiding studyUrethra and bladder

Choose 74450 for retrograde contrast imaging; 74455 describes imaging of the urethra and bladder during voiding.

74430Bladder imagingRetrograde contrast

74430 is cystography focused on the bladder. This code covers retrograde urethral and bladder imaging.

74420Retrograde urographyWith or without KUB

74420 covers retrograde imaging of the urinary collecting system, such as the ureters, rather than the urethra and bladder.

51610Bladder injectionFor x-ray imaging

51610 identifies the retrograde contrast-injection procedure; 74450 represents radiologic supervision and interpretation of the resulting imaging.

Codes related to 74450

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates