No office rate
Code 24400 describes humeral osteotomy, with or without internal fixation. Code 24420 applies when the operative service is osteoplasty, such as changing humeral length or shape.
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CMS RVU26D · Effective 2026-10-01
24420 Humerus osteoplasty Medicare reimbursement rates in Massachusetts
Corrective humeral surgery that reshapes or changes bone length, reported for procedures such as shortening or lengthening the upper-arm bone. Compare 24420 office and facility rates across CMS payment localities in Massachusetts.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 24420 in Massachusetts?
Massachusetts has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$1013.87–$1098.66
2 of 2 localities have a supported rate.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Orthopedic surgery
About 24420: Humeral bone reshaping or lengthening
Corrective humeral surgery that reshapes or changes bone length, reported for procedures such as shortening or lengthening the upper-arm bone.
This operation changes the shape or length of the humerus to correct a deformity or length discrepancy. An orthopedic surgeon typically performs it in an operating room, with or without fixation as needed to maintain the correction. The documented work should show that the humerus itself was reshaped or its length altered, rather than simply treating a fracture-healing problem.
Report the code when the operative work is humeral osteoplasty, not a single or multiple humeral osteotomy or repair of a nonunion or malunion. The record should identify the indication, side, bone work performed, and any fixation. Medicare assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. For bilateral reporting with modifier 50, payment is at 150%. When multiple procedures occur in one session, the highest-valued procedure is paid in full and others at 50%. An assistant at surgery may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 24420
- Global period
- Major surgery with a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included.
- Multiple procedures
- Standard multiple procedure reduction: the highest-valued procedure is paid in full and others at 50% when performed in the same session.
- Bilateral procedures
- Bilateral procedure with modifier 50 is paid at 150%.
- Assistant at surgery
- Assistant at surgery may be paid.
- Co-surgeons
- Co-surgeons paid only with supporting documentation.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU13.39 · 45%
- Practice expense (office) RVU13.75 · 46%
- Malpractice RVU2.85 · 10%
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Medicare services in 2024 · #5363 by national volume
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.
24420 compared with similar codes
Office rates for Massachusetts, from the same CMS release.
No office rate
Code 24410 is for multiple osteotomies of the humeral shaft. Code 24420 is not selected simply because the correction involves the humerus; the operative technique and purpose must support osteoplasty.
No office rate
Code 24430 addresses repair of a humeral nonunion or malunion without graft. Use 24420 for humeral reshaping or length alteration when the service is not repair of a nonunion or malunion.
No office rate
Code 24435 describes nonunion or malunion repair with graft. The graft-supported repair distinguishes it from humeral osteoplasty reported with 24420.
Compare 24420 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Metropolitan Boston →
Office / nonfacility
Unavailable
Facility
$1098.66
Rest Of Massachusetts →
Office / nonfacility
Unavailable
Facility
$1013.87
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24420 billing questions
How is this different from humeral osteotomy code 24400?
Use 24420 for reshaping or changing the length of the humerus. Code 24400 describes an osteotomy, where the operative approach is cutting the bone to correct its position or alignment.
When would code 24410 be more appropriate?
Code 24410 is for multiple osteotomies of the humeral shaft, such as a correction using multiple bone cuts. Choose 24420 when the documented procedure is humeral osteoplasty.
Are related postoperative visits included?
Yes. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
How is bilateral surgery reported?
For bilateral performance, report modifier 50; CMS payment for the bilateral procedure is at 150%.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeons are paid only when supporting documentation is provided; team surgery is not permitted.
What happens when another procedure is performed in the same session?
Under the standard multiple procedure reduction, the highest-valued procedure is paid in full and the other procedure or procedures are paid at 50%.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
2,31724371,,Revise reconst elbow joint,A,,26.81,14.88,NA,14.88,,5.36,47.05,47.05,0,090,0.10,0.69,0.21,2,1,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,31824400,,Osteot humerus w/wo int fixj,A,,11.05,9.81,NA,9.81,,2.34,23.20,23.20,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,31924410,,Mlt osteot rlgnm imed rd hum,A,,14.73,11.39,NA,11.39,,3.13,29.25,29.25,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,32024420,,Osteoplasty humerus,A,,13.39,13.75,NA,13.75,,2.85,29.99,29.99,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,32124430,,Rpr non/mal humerus wo graft,A,,14.87,11.10,NA,11.10,,3.06,29.03,29.03,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,32224435,,Rpr non/mal hum with agrft,A,,14.62,12.39,NA,12.39,,3.05,30.06,30.06,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,32324470,,Hemiepiphyseal arrest,A,,8.71,8.56,NA,8.56,,1.85,19.12,19.12,0,090,0.10,0.69,0.21,2,1,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00