CPT code 29875: Knee synovectomy, limited arthroscopic excision2026 Medicare rate & RVUs in New Mexico

Reports arthroscopic removal of a limited amount of inflamed or abnormal knee synovium, such as a symptomatic plica, as a therapeutic procedure.

CMS RVU26DEffective Oct 1, 2026One payment locality2.8K Medicare services in 2024

In New Mexico, Medicare pays $464.79 for 29875 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$464.79Hospital or facility

Check a contract rate as a % of Medicare · 29875 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 29875 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in New Mexico
  2. What 29875 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 29875 covers

The surgeon uses a knee arthroscope and instruments through small incisions to remove a limited area of inflamed or abnormal synovial tissue. A typical indication is a symptomatic plica that is treated by arthroscopic excision. Orthopedic surgeons most often perform the procedure in an outpatient operating room or ambulatory surgery center; hospital outpatient settings are also common. This is a therapeutic removal of synovium, not simply inspection of the joint or a biopsy taken during diagnostic arthroscopy.

Choose this code for a limited synovectomy; the extent and work documented should distinguish it from major synovectomy involving two or more compartments. As a designated separate procedure, it should not be separately reported when the synovectomy is part of a more extensive arthroscopic service at the same site. The major-surgery global period includes the day-before preoperative visit and 90 days of related postoperative care. When related endoscopies are performed together, endoscopy-family pricing applies. For bilateral procedures, modifier 50 is paid at 150%. An assistant is paid only when medical necessity is documented; 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.

How New Mexico compares for 29875

Across 109 of 109 payment localities, the facility rate for 29875 runs from $421.99 in Arkansas to $574.54 in San Benito County, CA. New Mexico pays $464.79. The RVUs are the same everywhere; the geographic indexes change the dollars.

29875 in New Mexico vs other payment areas
  1. New Mexico · this page$464.79
  2. Los Angeles, CA · California$508.55+$43.76
  3. Washington, DC area · District of Columbia$529.82+$65.03
  4. Miami, FL · Florida$550.23+$85.44
  5. Chicago, IL · Illinois$533.53+$68.74
  6. Manhattan, NY · New York$549.09+$84.30
  7. Alaska · Alaska$574.02+$109.23

Other areas in New Mexico first, then benchmark localities. Bars start at $0.

Every other payment area

29875 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$427.75
ArkansasArkansas—$421.99
ArizonaArizona—$461.16
Bakersfield, CACalifornia—$482.34
Chico, CACalifornia—$478.72
El Centro, CACalifornia—$478.94
Fresno, CACalifornia—$478.72
Hanford, CACalifornia—$478.72

29875 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

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29875 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

See 29875 in every payment locality

How the 29875 rate is calculated

Each of 29875’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 · 29875

RVUs × geographic indexes × conversion factor

Office or facility?

Work6.29

6.29 RVUs× 1.000 GPCI

Practice expense6.60

6.60 RVUs× 1.000 GPCI

Malpractice1.31

1.31 RVUs× 1.000 GPCI

Adjusted RVUs

14.2000

Conversion factor

$33.4009

Medicare rate

$474.29

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact New Mexico inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

3,357

Code
29875
Physician work
6.29
Practice expense
6.60
Malpractice
1.31

GPCI2026.csv

77

Locality
New Mexico
Physician work
1.000
Practice expense
0.917
Malpractice
1.201
Facility calculation for 29875 in New Mexico
ComponentRVULocality factorAdjusted
Physician work6.29× 1.0006.2900
Practice expense6.60× 0.9176.0522
Malpractice1.31× 1.2011.5733
Total RVUs13.9155
Conversion factor× 33.4009

Facility rate, New Mexico$464.79

Facility: (6.29 × 1 + 6.6 × 0.917 + 1.31 × 1.201) × $33.4009 = $464.79

Open 29875 in the RVU calculator

Payment rules and modifiers for 29875

29875 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 29875

Knee synovectomy, limited arthroscopic excision

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures3Endoscopy family rules apply.
Bilateral (modifier 50)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.69/0.21Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 29875

Knee synovectomy, limited arthroscopic excision

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.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

29875 without 50 · national facility

$474.29

Knee synovectomy, limited arthroscopic excision

29875-50 · Bilateral: 150%

$711.44

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).

When to use modifier 50

How 29875 has changed in New Mexico

29875 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$464.79RVU26D
2026-07-01Not available in this setting$464.79RVU26C
2026-04-01Not available in this setting$464.79RVU26B
2026-01-01Not available in this setting$464.79RVU26A
2025-10-01Not available in this setting$478.99RVU25D
2025-07-01Not available in this setting$478.99RVU25C
2025-04-01Not available in this setting$478.99RVU25B
2025-01-01Not available in this setting$478.99RVU25A
2024-10-01Not available in this setting$489.09RVU24D
2024-07-01Not available in this setting$489.09RVU24C
2024-04-01Not available in this setting$489.09RVU24B
2024-03-09Not available in this setting$489.09RVU24AR
2024-01-01Not available in this setting$481.10RVU24A
2023-10-01Not available in this setting$491.01RVU23D
2023-07-01Not available in this setting$491.01RVU23C
2023-04-01Not available in this setting$491.01RVU23B
2023-01-01Not available in this setting$491.01RVU23A
2022-10-01Not available in this setting$493.55RVU22D
2022-07-01Not available in this setting$493.55RVU22C
2022-04-01Not available in this setting$493.55RVU22B
2022-01-01Not available in this setting$493.55RVU22A
2021-10-01Not available in this setting$494.55RVU21D
2021-07-01Not available in this setting$494.55RVU21C
2021-04-01Not available in this setting$494.55RVU21B
2021-01-01Not available in this setting$494.55RVU21A
2020-10-01Not available in this setting$503.83RVU20D
2020-07-01Not available in this setting$503.83RVU20C
2020-04-01Not available in this setting$503.83RVU20B
2020-01-01Not available in this setting$503.83RVU20A
2019-10-01Not available in this setting$506.60RVU19D
2019-07-01Not available in this setting$506.60RVU19C
2019-04-01Not available in this setting$506.60RVU19B
2019-01-01Not available in this setting$506.60RVU19A
2018-10-01Not available in this setting$506.83RVU18D
2018-07-01Not available in this setting$506.83RVU18C
2018-04-01Not available in this setting$506.83RVU18B
2018-01-01Not available in this setting$506.83RVU18AR1
2017-10-01Not available in this setting$501.30RVU17D
2017-07-01Not available in this setting$501.30RVU17C
2017-04-01Not available in this setting$501.30RVU17B
2017-01-01Not available in this setting$501.30RVU17A
2016-10-01Not available in this setting$498.68RVU16D
2016-07-01Not available in this setting$498.68RVU16C
2016-04-01Not available in this setting$498.68RVU16B
2016-01-01Not available in this setting$498.68RVU16A
2015-10-01Not available in this setting$501.31RVU15D
2015-07-01Not available in this setting$501.31RVU15C
2015-04-01Not available in this setting$498.82RVU15B
2015-01-01Not available in this setting$498.82RVU15A
2014-10-01Not available in this setting$490.60RVU14D
2014-07-01Not available in this setting$490.60RVU14C
2014-04-01Not available in this setting$490.60RVU14B
2014-01-01Not available in this setting$490.60RVU14A
2013-10-01Not available in this setting$483.18RVU13D
2013-07-01Not available in this setting$483.18RVU13C
2013-04-01Not available in this setting$483.18RVU13B
2013-01-01Not available in this setting$483.18RVU13AR

Price 29875 for an earlier date of service

Where the New Mexico rate applies

New Mexico is a Medicare payment area, not a city. Our Census mapping connects it to 528 cities and communities in New Mexico. Some span more than one payment area; confirm with the service ZIP.

  • Abeytas
  • Abiquiu
  • Acomita Lake
  • Adelino
  • Agua Fria
  • Alamillo
  • Alamo
  • Alamogordo

Browse all communities in New Mexico

29875 billing questions

How do I distinguish this from 29876?

This code is for a limited synovectomy. Use 29876 when the surgeon performs a major synovectomy involving two or more compartments.

Can it be reported with another knee arthroscopy code?

Because it is a separate procedure, do not report it separately when the synovectomy is part of a more extensive arthroscopic service at the same site. The operative report should establish a distinct, therapeutic limited synovectomy.

Can diagnostic arthroscopy also be reported?

A diagnostic inspection is generally included when the surgeon proceeds to a surgical arthroscopy. This code represents therapeutic synovial removal, not diagnostic inspection alone.

What documentation supports the limited procedure?

Document the abnormal synovial tissue treated, the therapeutic removal performed, and the operative extent. The record should support a limited rather than major synovectomy.

How are bilateral procedures and assistants handled?

Modifier 50 identifies a bilateral procedure, which CMS pays at 150%. An assistant at surgery is paid only with documentation of medical necessity.

What global and surgical-team rules apply?

The 90-day global includes the day-before preoperative visit and 90 days of related postoperative care. CMS does not permit co-surgeons or team surgery for this code.

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
RVUs for 29875PPRRVU2026_Oct_nonQPP.csv, line 3,357 (RVU26D)
Geographic factors for New MexicoGPCI2026.csv, line 77 (RVU26D)

Open CMS sourceHow we calculate rates

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