CPT code 27570: Knee manipulation, under anesthesia2026 Medicare rate & RVUs in California
Reports controlled manipulation of a stiff knee under anesthesia, commonly to improve restricted motion after surgery when no surgical release is performed.
CMS doesn’t publish an office rate for 27570 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.
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On this page 9 sections
What 27570 covers
An orthopedic surgeon manipulates the knee while the patient is under anesthesia to address substantial stiffness or restricted range of motion. A common setting is a hospital or ambulatory surgery center, including treatment of persistent stiffness after knee replacement. The service is a closed manipulation; it does not describe arthroscopic release of adhesions or an open lengthening procedure.
Report the service when the operative note supports manipulation under anesthesia and identifies the treated knee and the motion limitation addressed. Related postoperative visits are included in the 10-day global period. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. For bilateral manipulation, modifier 50 is paid at 150%. Medicare does not pay an assistant at surgery for this code; co-surgeons and team surgery are 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 27570 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
| Payment locality | Office | Facility |
|---|---|---|
| Bakersfield, CA | Unavailable | $153.85 |
| Chico, CA | Unavailable | $152.83 |
| El Centro, CA | Unavailable | $152.89 |
| Fresno, CA | Unavailable | $152.83 |
| Hanford, CA | Unavailable | $152.83 |
| Los Angeles, CA | Unavailable | $162.70 |
| Madera, CA | Unavailable | $152.83 |
| Marin County, CA | Unavailable | $181.29 |
| Merced, CA | Unavailable | $152.83 |
| Modesto, CA | Unavailable | $152.83 |
| Napa, CA | Unavailable | $172.75 |
| Oxnard, CA | Unavailable | $161.35 |
| Redding, CA | Unavailable | $152.83 |
| Rest of California | Unavailable | $152.83 |
| Riverside, CA | Unavailable | $156.80 |
| Sacramento, CA | Unavailable | $159.24 |
| Salinas, CA | Unavailable | $158.63 |
| San Benito County, CA | Unavailable | $185.65 |
| San Diego, CA | Unavailable | $161.58 |
| San Francisco, CA | Unavailable | $180.87 |
| San Luis Obispo, CA | Unavailable | $156.23 |
| Santa Clara County, CA | Unavailable | $183.94 |
| Santa Cruz, CA | Unavailable | $162.48 |
| Santa Maria, CA | Unavailable | $159.01 |
| Santa Rosa, CA | Unavailable | $164.04 |
| Stockton, CA | Unavailable | $152.83 |
| Vallejo, CA | Unavailable | $172.14 |
| Visalia, CA | Unavailable | $152.83 |
| Yuba City, CA | Unavailable | $152.83 |
How the 27570 rate is calculated
Each of 27570’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 · 27570
RVUs × geographic indexes × conversion factor
Work1.75
1.75 RVUs× 1.000 GPCI
Practice expense2.37
2.37 RVUs× 1.000 GPCI
Malpractice0.37
0.37 RVUs× 1.000 GPCI
Adjusted RVUs
4.4900
Conversion factor
$33.4009
Medicare rate
$149.97
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 27570
27570 has a 10-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 27570
Knee manipulation, under anesthesia
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 010 | Minor procedure: the day of the procedure plus 10 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) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.80/0.10 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 27570
Knee manipulation, under anesthesia
10-day global period ends
Oct 11, 2026
Covers Oct 1, 2026 through Oct 11, 2026 (11 days).
Visit on Oct 31, 2026
After the global period ends: visits and procedures are billed normally.
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
27570 without 50 · national facility
$149.97
Knee manipulation, under anesthesia
27570-50 · Bilateral: 150%
$224.96
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).
27570 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 29884Knee arthroscopyAdhesion release
- Choose 29884 when the surgeon arthroscopically releases knee adhesions; it includes manipulation when performed. This code describes manipulation under anesthesia without arthroscopic release.
- 27430QuadricepsplastyQuadriceps contracture release
- 27430 describes quadricepsplasty, an open lengthening procedure for selected contractures. This code is for closed manipulation under anesthesia.
- 27599Unlisted procedureFemur or knee
- Use 27599 only when the knee procedure performed is not represented by a specific listed code. A standard manipulation under anesthesia is described by this code.
27570 billing questions
When should this code be chosen instead of arthroscopic lysis of adhesions?
Use this code for manipulation under anesthesia without arthroscopic release. CPT 29884 describes arthroscopic treatment of knee adhesions, with or without manipulation.
What documentation supports reporting the service?
Document the knee stiffness or restricted motion, the knee treated, the manipulation performed under anesthesia, and the clinical result, such as motion before and after the procedure.
Are postoperative visits included?
Related postoperative visits during the 10-day global period are included in this procedure's payment.
How is manipulation of both knees reported?
Report bilateral treatment with modifier 50; CMS pays the bilateral procedure at 150%.
Can an assistant or co-surgeon be reported?
Medicare does not pay an assistant at surgery for this code. Co-surgeons and team surgery are not permitted.
What happens if another procedure is performed in the same session?
The highest-valued procedure is paid in full, and other procedures are subject to the standard multiple-procedure reduction, with payment 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 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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