Billing code 27156: Hip reconstructionMedicare rate & RVUs in Illinois
Reports combined pelvic bone realignment, open reduction of the hip, and femoral osteotomy for reconstructive treatment of hip dysplasia or dislocation.
CMS doesn’t publish an office rate for 27156 in Illinois.
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 27156 covers
This major reconstructive operation combines realignment of a pelvic bone around the hip with open repositioning of the hip and a femoral osteotomy. It is typically performed by an orthopedic surgeon, often a pediatric hip specialist, for a hip that remains dislocated or poorly aligned, such as in developmental dysplasia. The operation addresses the pelvic socket and femur together rather than treating only one bone or performing open reduction alone.
Report the code when the documented operation includes the combined pelvic osteotomy, open hip reduction, and femoral osteotomy. The operative report should identify the bones and components treated, the hip’s dislocated or dysplastic condition, and the reconstructive steps performed. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur 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-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.
Where 27156 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Chicago | Unavailable | $1,777.64 |
| East St. Louis | Unavailable | $1,678.23 |
| Rest Of Illinois | Unavailable | $1,592.65 |
| Suburban Chicago | Unavailable | $1,693.37 |
How the 27156 rate is calculated
Each of 27156’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 · 27156
RVUs × geographic indexes × conversion factor
Work25.57
25.57 RVUs× 1.000 GPCI
Practice expense14.89
14.89 RVUs× 1.000 GPCI
Malpractice5.45
5.45 RVUs× 1.000 GPCI
Adjusted RVUs
45.9100
Conversion factor
$33.4009
Medicare rate
$1,533.44
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 27156
27156 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 27156
Hip reconstruction
| 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 · 27156
Hip reconstruction
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
27156 without 50 · national facility
$1,533.44
Hip reconstruction
27156-50 · Bilateral: 150%
$2,300.16
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).
27156 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 27147Hip osteotomy
- Choose 27147 for pelvic osteotomy with open reduction when the combined femoral osteotomy is not performed. This code represents the combined reconstruction including femoral osteotomy.
- 27151Pelvic osteotomy
- Choose 27151 for pelvic and femoral osteotomies without the open reduction component. This code also includes open reduction of the hip.
- 27146Hip osteotomy
- 27146 is for pelvic osteotomy without the additional open reduction and femoral osteotomy combination represented here.
- 27158Pelvic osteotomy
- 27158 describes a distinct pelvic osteotomy approach; this code is for the combined reconstruction involving open reduction and femoral osteotomy.
27156 billing questions
When is this code chosen instead of 27147?
Use this code when the reconstruction includes pelvic osteotomy, open reduction of the hip, and femoral osteotomy. Code 27147 describes the pelvic osteotomy with open reduction, without the combined femoral osteotomy.
Does the code include the femoral osteotomy?
Yes. The combined service includes a femoral osteotomy along with pelvic realignment and open reduction; document each component in the operative report.
What documentation supports reporting this service?
Document the hip’s dysplasia or dislocation, the pelvic and femoral bones treated, and the open reduction and osteotomy work performed.
How does the 90-day global period affect postoperative billing?
The day-before preoperative visit and 90 days of related postoperative care are included in the global period.
How is bilateral surgery reported under the CMS rule?
For a bilateral procedure, report modifier 50; CMS pays the procedure at 150% under the stated bilateral rule.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery services may be paid. Co-surgeons are paid only with supporting documentation, and team surgery is not permitted.
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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