CPT code 27137: Hip revision, acetabular component only2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 27137 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 27137 covers

An orthopedic surgeon revises the socket-side component of an existing total hip replacement while retaining the femoral component. The operation may address problems such as loosening, wear, bone loss, or instability. Autograft or allograft may be used as part of the acetabular revision. These procedures are generally performed in a hospital or other surgical facility.

Select this code when the acetabular component is revised and the femoral component is not; the operative report should identify which prosthetic components were removed, revised, or retained and describe any grafting. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery services may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted.

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 27137 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 27137 rate is calculated

Each of 27137’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 27137

27137 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 50

27137 compared with similar codes

How to choose

27134Hip revisionBoth components revised

Choose 27134 when both the acetabular and femoral components are revised. This code applies when the revision is limited to the acetabular component.

27138Hip revisionFemoral component only

27138 describes revision of the femoral component only; this code describes revision of the acetabular component only.

27130Hip replacementTotal joint, primary procedure

27130 is for primary total hip replacement. Use this code for revision of the acetabular component of an existing total hip replacement.

27132Hip replacementConversion after prior surgery

27132 describes conversion to total hip replacement after prior hip surgery. This code is for revising the acetabular component of an existing total hip replacement.

Codes related to 27137

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