CPT code 76511: Ocular ultrasound, quantitative A-scan only2026 Medicare rate & RVUs

Medicare pays $57.45 for 76511 nationally in the office. Local office rates run $52.04–$75.36.

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

What 76511 covers

This diagnostic study uses reflected ultrasound signals to produce quantitative measurements of the eye. An ophthalmologist interprets the findings; trained ophthalmic staff may acquire the scan in an eye-care office or outpatient facility. It is appropriate when quantitative A-scan information is needed without a B-scan. It is distinct from A-scan biometry performed to support intraocular lens selection.

Report 76511 for the quantitative A-scan study alone, and retain documentation of the eye examined, diagnostic reason, measurements, and physician interpretation. The code has professional and technical components: modifier 26 identifies the interpretation, modifier TC identifies equipment and staff, and no modifier represents the global service. When multiple ophthalmic diagnostic procedures are billed, the CMS multiple-procedure reduction applies to the technical component. For bilateral services, each side is paid separately at 100%.

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 76511 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

76511 rates by state

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

How the 76511 rate is calculated

Each of 76511’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 76511

The CMS indicators that decide how 76511 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

76511 compared with similar codes

How to choose

76510Eye ultrasoundB-scan and quantitative A-scan

76510 is the combined B-scan and quantitative A-scan service. 76511 is for quantitative A-scan alone.

76512Eye ultrasoundDiagnostic B-scan

76512 reports diagnostic B-scan alone; 76511 reports quantitative A-scan alone.

76516Eye biometryUltrasound A-scan

76516 is A-scan biometry, not a diagnostic quantitative A-scan study. Select it when the service is ocular biometry without intraocular lens power calculation.

76519Ocular biometryUltrasound with lens calculation

76519 reports A-scan biometry with intraocular lens power calculation; 76511 does not describe that biometry service.

Codes related to 76511

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