CPT code 67599: Unlisted orbit procedure, no dedicated CPT code2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 67599 in California.

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

What 67599 covers

This code identifies a procedure involving the orbit for which no dedicated CPT code describes the service. It is selected based on the procedure performed, rather than simply because care involves the eye socket. Listed orbital procedures include implant insertion, implant revision, and optic nerve decompression; those specific services should be reported with their dedicated codes when they accurately describe the work. This code is for a different orbital procedure that lacks a matching listed code.

For Medicare physician fee schedule purposes, status C means CMS publishes no national payment amount and the Medicare Administrative Contractor sets payment for each claim. The contractor also determines the global period. In a session with multiple procedures, the highest-valued procedure is paid in full and the others at 50%; a bilateral procedure reported with modifier 50 is paid at 150%.

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 67599 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 67599 rate is calculated

Each of 67599’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 67599

The CMS indicators that decide how 67599 is paid alongside other services.

What modifiers do to the payment

When to use modifier 50

67599 compared with similar codes

How to choose

67550Orbital implantMuscles attached

67550 identifies orbital implant insertion. Choose 67599 only when the procedure performed is not accurately represented by that code or another dedicated code.

67560Socket implant revisionExisting orbital implant

67560 identifies orbital implant revision. Use 67599 for a different orbital procedure that lacks a matching dedicated code.

67570Optic nerve surgeryDecompression

67570 identifies optic nerve decompression. Use 67599 for a different orbital procedure that lacks a matching dedicated code.

Codes related to 67599

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