CPT code 76514: Corneal pachymetry, ultrasonic thickness measurement2026 Medicare rate & RVUs in California

Medicare pays $12.07–$14.70 for 76514 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 76514 covers

This service uses an ultrasound probe to measure corneal thickness, commonly the central cornea. Ophthalmologists and optometrists may order it during evaluation of glaucoma risk or corneal conditions, or when thickness information is needed for another eye-care decision. It is performed in settings such as an ophthalmology office or outpatient eye clinic.

Report the code for the ultrasonic thickness study whether one eye or both eyes are examined; CMS prices it as bilateral, so modifier 50 does not increase payment. Documentation should identify the clinical reason, eye or eyes assessed, measurements, and interpretation. The service has professional and technical components: modifier 26 identifies the interpretation, modifier TC identifies the equipment and staff portion, and an unmodified claim represents the global service. When multiple ophthalmology diagnostic procedures are performed, the multiple-procedure reduction applies to the technical component.

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 76514 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 76514 rate is calculated

Each of 76514’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 76514

The CMS indicators that decide how 76514 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

76514 compared with similar codes

How to choose

76513Eye ultrasoundAnterior segment

Choose 76514 for ultrasonic measurement of corneal thickness. Code 76513 is ultrasound biomicroscopy of the anterior segment.

76516Eye biometryUltrasound A-scan

Code 76516 is ophthalmic ultrasound biometry for ocular dimensions; 76514 measures corneal thickness.

76519Ocular biometryUltrasound with lens calculation

Code 76519 includes ophthalmic biometry used for intraocular lens power calculation. Use 76514 when the service is corneal pachymetry.

Codes related to 76514

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