CPT code 76510: Eye ultrasound, B-scan and quantitative A-scan2026 Medicare rate & RVUs in California

Medicare pays $73.24–$91.07 for 76510 in the office in California, from Chico, CA to San Benito County, CA. Which amount applies depends on the service address.

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

What 76510 covers

This diagnostic study combines B-scan imaging of ocular structures with quantitative A-scan measurements. Ophthalmologists and other qualified eye-care professionals may use it to assess the posterior segment when cataract, vitreous hemorrhage, or another opacity prevents a clear view of the fundus. The B-scan provides structural information, while the quantitative A-scan supplies measurements; the documented clinical question should support performing both parts of the study.

Report this code when both the B-scan and quantitative A-scan are performed as a diagnostic examination. Documentation should identify the eye examined, the reason for imaging, the findings, and the interpretation. CMS separately prices the professional interpretation (modifier 26) and technical services (modifier TC); billing without either modifier represents the global service. When bilateral, each side is paid separately at 100%. The ophthalmology diagnostic multiple-procedure reduction applies to the technical component when it is subject to that reduction.

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 76510 pays more and less in California

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

29 of 29 payment localities

How the 76510 rate is calculated

Each of 76510’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 76510

The CMS indicators that decide how 76510 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

76510 compared with similar codes

How to choose

76511Ocular ultrasoundQuantitative A-scan only

Choose 76511 when quantitative A-scan is performed without B-scan imaging; 76510 includes both components.

76512Eye ultrasoundDiagnostic B-scan

Choose 76512 when the diagnostic examination includes B-scan alone. 76510 also includes quantitative A-scan measurement.

76519Ocular biometryUltrasound with lens calculation

76519 describes A-scan biometry with intraocular lens power calculation, typically for cataract surgery planning. 76510 is the combined diagnostic B-scan and quantitative A-scan study.

Codes related to 76510

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