CPT code 47399: Liver procedure, no specific CPT code2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 47399 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 47399 covers

Surgeons report CPT 47399 for a liver procedure when no specific CPT code describes the operation performed. It is the general unlisted liver procedure code, rather than a code for a defined technique such as radiofrequency ablation. For an unlisted laparoscopic liver procedure, 47379 is the more specific code for that approach. The operative documentation and claim submission should explain the procedure and its scope.

Medicare assigns 47399 status C: CMS publishes no national payment, and the Medicare Administrative Contractor sets payment for each claim. The contractor also sets the global period. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others at 50%. The documentation should make the service being priced clear.

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 47399 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 47399 rate is calculated

Each of 47399’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 47399

The CMS indicators that decide how 47399 is paid alongside other services.

What modifiers do to the payment

When to use modifier 51

47399 compared with similar codes

How to choose

47379Laparoscopic liver surgeryUnlisted procedure

47379 is the unlisted code for a laparoscopic liver procedure. Choose it when the unlisted procedure is laparoscopic; 47399 is the general unlisted liver procedure code.

47370Liver tumor ablationLaparoscopic radiofrequency

47370 specifically describes laparoscopic radiofrequency ablation of a liver tumor. Use 47399 only when no specific code describes the operation performed.

47380Liver ablationOpen approach, radiofrequency

47380 specifically describes open radiofrequency ablation of a liver tumor. Use 47399 when the operation is not represented by a specific code.

47382Liver ablationPercutaneous radiofrequency

47382 specifically describes percutaneous radiofrequency ablation of a liver tumor. Use 47399 when no specific code describes the procedure performed.

Codes related to 47399

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