Billing code 24366: Radial head arthroplastyMedicare rate & RVUs in Delaware
Orthopedic surgeons report this service when reconstructing the radial head with a prosthetic implant rather than performing implant-free arthroplasty or fracture fixation.
CMS doesn’t publish an office rate for 24366 in Delaware.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 24366 covers
The surgeon removes or reshapes the damaged radial head and places a prosthetic implant to restore the radial head’s role in elbow articulation and forearm rotation. This operation is performed by an orthopedic surgeon in an operating room, commonly when the radial head cannot be reconstructed adequately with the patient’s own bone. The operative report should identify the treated side and document the implant and the work performed on the radial head.
Report 24366 for radial head arthroplasty with an implant; distinguish it from implant-free arthroplasty and from open treatment of a radial head or neck fracture. For an acute fracture managed with prosthetic replacement, evaluate 24666, which describes the fracture treatment with replacement. CMS assigns a 90-day major-surgery global period, including the day-before preoperative visit and 90 days of related postoperative care. In a same-session multiple-procedure setting, the highest-valued procedure is paid in full and other procedures at 50%. Modifier 50 for a bilateral procedure is paid at 150%. An assistant at surgery may be paid; co-surgeons require 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.
24366 in Delaware
| Payment locality | Office | Facility |
|---|---|---|
| Delaware | Unavailable | $627.35 |
How the 24366 rate is calculated
Each of 24366’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.
How the rate is built · 24366
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 9.13Practice expense 8.04Malpractice 1.85
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 24366
24366 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 24366
Radial head arthroplasty
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| Assistant at surgery (80/81/82/AS) | 2 | Paid. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.69/0.21 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 24366
Radial head arthroplasty
90-day global period ends
Dec 30, 2026
Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).
Visit on Oct 31, 2026
Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
24366 without 50 · national facility
$635.29
Radial head arthroplasty
24366-50 · Bilateral: 150%
$952.94
Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).
24366 compared with similar codes
Compare codes
24366 vs 24365 vs 24666 vs 24665: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 24365Radial head reconstruction
- Choose 24366 when a prosthetic implant is used for radial head arthroplasty; 24365 is the implant-free sibling service.
- 24666Radial head surgery
- For open treatment of an acute radial head or neck fracture with prosthetic replacement, evaluate 24666. Code 24366 describes radial head arthroplasty rather than the fracture-treatment service.
- 24665Radial head surgery
- 24665 describes open treatment of a radial head or neck fracture with internal fixation or excision when performed. It does not describe the prosthetic replacement captured by 24666.
24366 billing questions
How does 24366 differ from 24365?
24366 describes radial head arthroplasty with a prosthetic implant. Use 24365 for the corresponding arthroplasty without an implant.
Should 24366 be reported for an acute fracture treated with a radial head prosthesis?
When the procedure is open treatment of a radial head or neck fracture with prosthetic replacement, evaluate 24666. That code describes the fracture treatment with replacement rather than separately reporting 24366 for the arthroplasty.
Can 24366 be billed with 24666 for the same radial head?
Do not separately report 24366 for the prosthetic replacement included in the fracture treatment described by 24666.
What documentation supports 24366?
Document the side, the radial head procedure, and the prosthetic implant placed. The operative report should also make clear whether the service was arthroplasty or open fracture treatment.
Can an assistant or co-surgeon be reported?
CMS may pay for an assistant at surgery. Co-surgeons are paid only with supporting documentation; team surgery is not permitted.
How is a bilateral procedure handled?
For a bilateral procedure, report modifier 50; CMS pays the bilateral procedure at 150%.
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
Show the CMS file lines behind this rate
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